The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in Prague, is the change in frequency of a wave for an observer moving relative to the source of the wave. It is commonly heard when a vehicle sounding a siren or horn approaches, passes, and recedes from an observer. The received frequency is higher (compared to the emitted frequency) during the approach, it is identical at the instant of passing by, and it is lower during the recession.

The relative increase in frequency can be explained as follows. When the source of the waves is moving toward the observer, each successive wave crest is emitted from a position closer to the observer than the previous wave. Therefore each wave takes slightly less time to reach the observer than the previous wave. Therefore the time between the arrival of successive wave crests at the observer is reduced, causing an increase in the frequency. While they are traveling, the distance between successive wave fronts is reduced; so the waves "bunch together". Conversely, if the source of waves is moving away from the observer, each wave is emitted from a position farther from the observer than the previous wave, so the arrival time between successive waves is increased, reducing the frequency. The distance between successive wave fronts is increased, so the waves "spread out".

For waves that propagate in a medium, such as sound waves, the velocity of the observer and of the source are relative to the medium in which the waves are transmitted. The total Doppler effect may therefore result from motion of the source, motion of the observer, or motion of the medium. Each of these effects is analyzed separately. For waves which do not require a medium, such as light or gravity in general relativity, only the relative difference in velocity between the observer and the source needs to be considered.

Development

Doppler first proposed the effect in 1842 in his treatise "''Über das farbige Licht der Doppelsterne und einiger anderer Gestirne des Himmels''" (On the coloured light of the binary stars and some other stars of the heavens). The hypothesis was tested for sound waves by Buys Ballot in 1845. He confirmed that the sound's pitch was higher than the emitted frequency when the sound source approached him, and lower than the emitted frequency when the sound source receded from him. Hippolyte Fizeau discovered independently the same phenomenon on electromagnetic waves in 1848 (in France, the effect is sometimes called "l'effet Doppler-Fizeau" but that name was not adopted by the rest of the world as Fizeau's discovery was three years after Doppler's). In Britain, John Scott Russell made an experimental study of the Doppler effect (1848).

An English translation of Doppler's 1842 treatise can be found in the book '''The Search for Christian Doppler'' by Alec Eden.

General

In classical physics, where the speeds of source and the receiver relative to the medium are lower than the velocity of waves in the medium, the relationship between observed frequency ''f'' and emitted frequency ''f''₀ is given by: ::$f\; =\; \backslash left(\; \backslash frac\{v\; +\; v\_r\}\{v\; +\; v\_\{s\}\}\; \backslash right)\; f\_0\; \backslash ,$ :where ::$v\; \backslash ;$ is the velocity of waves in the medium ::$v\_\{r\}\; \backslash ,$ is the velocity of the receiver relative to the medium; positive if the receiver is moving towards the source. ::$v\_\{s\}\; \backslash ,$ is the velocity of the source relative to the medium; positive if the source is moving away from the receiver.

The frequency is decreased if either is moving away from the other.

The above formula works for sound wave if and only if the speeds of the source and receiver relative to the medium are slower than the speed of sound. See also Sonic boom.

The above formula assumes that the source is either directly approaching or receding from the observer. If the source approaches the observer at an angle (but still with a constant velocity), the observed frequency that is first heard is higher than the object's emitted frequency. Thereafter, there is a monotonic decrease in the observed frequency as it gets closer to the observer, through equality when it is closest to the observer, and a continued monotonic decrease as it recedes from the observer. When the observer is very close to the path of the object, the transition from high to low frequency is very abrupt. When the observer is far from the path of the object, the transition from high to low frequency is gradual.

In the limit where the speed of the wave is much greater than the relative speed of the source and observer (this is often the case with electromagnetic waves, e.g. light), the relationship between observed frequency ''f'' and emitted frequency ''f''₀ is given by: {| !Observed frequency||Change in frequency |- |width=70%|

$f=\backslash left(1-\backslash frac\{v\_\{s,r\}\}\{c\}\backslash right)f\_0$|||$\backslash Delta\; f=-\backslash frac\{v\_\{s,r\}\}\{c\}f\_0=-\backslash frac\{v\_\{s,r\}\}\{\backslash lambda\_\{0\}\}$ |}

:where ::$v\_\{s,r\}\; =\; v\_s\; -\; v\_r\; \backslash ,$ is the velocity of the source relative to the receiver: it is positive when the source and the receiver are moving further apart. ::$c\; \backslash ,$ is the speed of wave (e.g. 3×10⁸ m/s for electromagnetic waves travelling in a vacuum) ::$\backslash lambda\_\{0\}\; \backslash ,$ is the wavelength of the transmitted wave in the reference frame of the source.

These two equations are only accurate to a first order approximation. However, they work reasonably well when the speed between the source and receiver is slow relative to the speed of the waves involved and the distance between the source and receiver is large relative to the wavelength of the waves. If either of these two approximations are violated, the formulae are no longer accurate.

Analysis

The frequency of the sounds that the source ''emits'' does not actually change. To understand what happens, consider the following analogy. Someone throws one ball every second in a man's direction. Assume that balls travel with constant velocity. If the thrower is stationary, the man will receive one ball every second. However, if the thrower is moving towards the man, he will receive balls more frequently because the balls will be less spaced out. The inverse is true if the thrower is moving away from the man. So it is actually the ''wavelength'' which is affected; as a consequence, the received frequency is also affected. It may also be said that the velocity of the wave remains constant whereas wavelength changes; hence frequency also changes.

If the source moving away from the observer is emitting waves through a medium with an actual frequency ''f''₀, then an observer stationary relative to the medium detects waves with a frequency ''f'' given by

:$f\; =\; \backslash left\; (\; \backslash frac\; \{v\}\{v\; +\; v\_\{s\}\}\; \backslash right\; )\; f\_0$

where ''v''_s is positive if the source is moving away from the observer, and negative if the source is moving towards the observer.

A similar analysis for a moving ''observer'' and a stationary source yields the observed frequency (the receiver's velocity being represented as ''v''_r):

:$f\; =\; \backslash left\; (\; \backslash frac\; \{v\; +\; v\_\{r\}\}\{v\}\; \backslash right\; )\; f\_0$

where the similar convention applies: ''v''_r is positive if the observer is moving towards the source, and negative if the observer is moving away from the source.

These can be generalized into a single equation with both the source and receiver moving.

:$f\; =\; \backslash left\; (\; \backslash frac\; \{v+v\_\{r\}\}\{v\; +\; v\_\{s\}\}\; \backslash right\; )\; f\_0$

With a relatively slow moving source, ''v''_s,r is small in comparison to ''v'' and the equation approximates to :$f\; =\; \backslash left\; (1\; -\; \backslash frac\; \{v\_\{s,r\}\}\{v\}\; \backslash right\; )\; f\_0$ where $v\_\{s,r\}=v\_s-v\_r\; \backslash ,$.

However the limitations mentioned above still apply. When the more complicated exact equation is derived without using any approximations (just assuming that source, receiver, and wave or signal are moving linearly relatively to each other) several interesting and perhaps surprising results are found. For example, as Lord Rayleigh noted in his classic book on sound, by properly moving it would be possible to hear a symphony being played backwards. This is the so-called "time reversal effect" of the Doppler effect. Other interesting conclusions are that the Doppler effect is time-dependent in general (thus we need to know not only the source and receivers' velocities, but also their positions at a given time), and in some circumstances it is possible to receive two signals or waves from a source, or no signal at all. In addition there are more possibilities than just the receiver approaching the signal and the receiver receding from the signal.

All these additional complications are derived for the classical, i.e., non-relativistic, Doppler effect, but hold for the relativistic Doppler effect as well.

A common misconception

Craig Bohren pointed out in 1991 that some physics textbooks erroneously state that the observed frequency ''increases'' as the object approaches an observer and then decreases only as the object passes the observer. In most cases, the observed frequency of an approaching object declines monotonically from a value above the emitted frequency, through a value equal to the emitted frequency when the object is closest to the observer, and to values increasingly below the emitted frequency as the object recedes from the observer. Bohren proposed that this common misconception might occur because the ''intensity'' of the sound increases as an object approaches an observer and decreases once it passes and recedes from the observer and that this change in intensity is misperceived as a change in frequency. Higher sound pressure levels make for a small decrease in perceived pitch in low frequency sounds, and for a small increase in perceived pitch for high frequency sounds.

Application

Sirens

The siren on a passing emergency vehicle will start out higher than its stationary pitch, slide down as it passes, and continue lower than its stationary pitch as it recedes from the observer. Astronomer John Dobson explained the effect thus:

:"The reason the siren slides is because it doesn't hit you."

In other words, if the siren approached the observer directly, the pitch would remain constant (as ''v''_{s, r} is only the radial component) until the vehicle hit him, and then immediately jump to a new lower pitch. Because the vehicle passes by the observer, the radial velocity does not remain constant, but instead varies as a function of the angle between his line of sight and the siren's velocity:

:$v\_\{r\}=v\_s\backslash cdot\; \backslash cos\{\backslash theta\}$

where ''v''_s is the velocity of the object (source of waves) with respect to the medium, and $\backslash theta$ is the angle between the object's forward velocity and the line of sight from the object to the observer.

Astronomy

The Doppler effect for electromagnetic waves such as light is of great use in astronomy and results in either a so-called red shift or blue shift. It has been used to measure the speed at which stars and galaxies are approaching or receding from us, that is, the radial velocity. This is used to detect if an apparently single star is, in reality, a close binary and even to measure the rotational speed of stars and galaxies.

The use of the Doppler effect for light in astronomy depends on our knowledge that the spectra of stars are not continuous. They exhibit absorption lines at well defined frequencies that are correlated with the energies required to excite electrons in various elements from one level to another. The Doppler effect is recognizable in the fact that the absorption lines are not always at the frequencies that are obtained from the spectrum of a stationary light source. Since blue light has a higher frequency than red light, the spectral lines of an approaching astronomical light source exhibit a blue shift and those of a receding astronomical light source exhibit a redshift.

Among the nearby stars, the largest radial velocities with respect to the Sun are +308 km/s (BD-15°4041, also known as LHS 52, 81.7 light-years away) and -260 km/s (Woolley 9722, also known as Wolf 1106 and LHS 64, 78.2 light-years away). Positive radial velocity means the star is receding from the Sun, negative that it is approaching.

Temperature measurement

Another use of the Doppler effect, which is found mostly in plasma physics and astronomy, is the estimation of the temperature of a gas (or ion temperature in a plasma) which is emitting a spectral line. Due to the thermal motion of the emitters, the light emitted by each particle can be slightly red- or blue-shifted, and the net effect is a broadening of the line. This line shape is called a Doppler profile and the width of the line is proportional to the square root of the temperature of the emitting species, allowing a spectral line (with the width dominated by the Doppler broadening) to be used to infer the temperature.

Radar

The Doppler effect is used in some types of radar, to measure the velocity of detected objects. A radar beam is fired at a moving target — e.g. a motor car, as police use radar to detect speeding motorists — as it approaches or recedes from the radar source. Each successive radar wave has to travel farther to reach the car, before being reflected and re-detected near the source. As each wave has to move farther, the gap between each wave increases, increasing the wavelength. In some situations, the radar beam is fired at the moving car as it approaches, in which case each successive wave travels a lesser distance, decreasing the wavelength. In either situation, calculations from the Doppler effect accurately determine the car's velocity. Moreover, the proximity fuze, developed during World War II, relies upon Doppler radar to explode at the correct time, height, distance, etc.

Medical imaging and blood flow measurement

An echocardiogram can, within certain limits, produce accurate assessment of the direction of blood flow and the velocity of blood and cardiac tissue at any arbitrary point using the Doppler effect. One of the limitations is that the ultrasound beam should be as parallel to the blood flow as possible. Velocity measurements allow assessment of cardiac valve areas and function, any abnormal communications between the left and right side of the heart, any leaking of blood through the valves (valvular regurgitation), and calculation of the cardiac output. Contrast-enhanced ultrasound using gas-filled microbubble contrast media can be used to improve velocity or other flow-related medical measurements.

Although "Doppler" has become synonymous with "velocity measurement" in medical imaging, in many cases it is not the frequency shift (Doppler shift) of the received signal that is measured, but the phase shift (''when'' the received signal arrives).

Velocity measurements of blood flow are also used in other fields of medical ultrasonography, such as obstetric ultrasonography and neurology. Velocity measurement of blood flow in arteries and veins based on Doppler effect is an effective tool for diagnosis of vascular problems like stenosis.

Flow measurement

Instruments such as the laser Doppler velocimeter (LDV), and acoustic Doppler velocimeter (ADV) have been developed to measure velocities in a fluid flow. The LDV emits a light beam and the ADV emits an ultrasonic acoustic burst, and measure the Doppler shift in wavelengths of reflections from particles moving with the flow. The actual flow is computed as a function of the water velocity and phase. This technique allows non-intrusive flow measurements, at high precision and high frequency.

Velocity profile measurement

Developed originally for velocity measurements in medical applications (blood flows), Ultrasonic Doppler Velocimetry (UDV) can measure in real time complete velocity profile in almost any liquids containing particles in suspension such as dust, gas bubbles, emulsions. Flows can be pulsating, oscillating, laminar or turbulent, stationary or transient. This technique is fully non-invasive.

Underwater acoustics

In military applications the Doppler shift of a target is used to ascertain the speed of a submarine using both passive and active sonar systems. As a submarine passes by a passive sonobuoy, the stable frequencies undergo a Doppler shift, and the speed and range from the sonobuoy can be calculated. If the sonar system is mounted on a moving ship or another submarine, then the relative velocity can be calculated.

Audio

The Leslie speaker, associated with and predominantly used with the Hammond B-3 organ, takes advantage of the Doppler Effect by using an electric motor to rotate an acoustic horn around a loudspeaker, sending its sound in a circle. This results at the listener's ear in rapidly fluctuating frequencies of a keyboard note.

Vibration measurement

A laser Doppler vibrometer (LDV) is a non-contact method for measuring vibration. The laser beam from the LDV is directed at the surface of interest, and the vibration amplitude and frequency are extracted from the Doppler shift of the laser beam frequency due to the motion of the surface.

See also

Relativistic Doppler effect

Dopplergraph

Fizeau experiment

Fading

Inverse Doppler effect

Photoacoustic Doppler effect

Differential Doppler effect

Rayleigh fading

References

Further reading

"Doppler and the Doppler effect", E. N. da C. Andrade, ''Endeavour'' Vol. XVIII No. 69, January 1959 (published by ICI London). Historical account of Doppler's original paper and subsequent developments.

External links

Doppler Effect, ScienceWorld

Java simulation of Doppler effect

Doppler Shift for Sound and Light at MathPages

The Doppler Effect and Sonic Booms (D.A. Russell, Kettering University)

Video Mashup with Doppler Effect videos

Wave Propagation ''from John de Pillis.'' An animation showing that the speed of a moving wave source does not affect the speed of the wave.

EM Wave Animation ''from John de Pillis.'' How an electromagnetic wave propagates through a vacuum

Doppler Shift Demo - Interactive flash simulation for demonstrating Doppler shift.

Interactive applets at Physics 2000

Category:Doppler effects Category:Radio frequency propagation Category:Wave mechanics Category:Radar signal processing

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Coordinates	28°36′36″N77°13′48″N
name	Eddie Izzard
birth name	Edward John Izzard
birth date	February 07, 1962
birth place	Colony of Aden, Aden Protectorate (now Aden, Yemen)
medium	Stand-up, Television, Film, Stage
nationality	British
active	1987–present
genre	Improvisational comedy,Observational comedy
subject	World history, Celebrities, Religion, Language, Sex
influences	Monty Python, Billy Connolly, Lenny Bruce, Steve Martin, Richard Pryor, Spike Milligan
influenced	Harry Hill, Dara Ó Briain, Demetri Martin, Hal Sparks
notable work	''Live at the Ambassadors'' ''Definite Article'' ''Dress to Kill'' ''Glorious'' ''Circle'' ''Lenny Bruce'' in ''Lenny'' ''Wayne Malloy/Doug Rich'' in ''The Riches'' ''Roman Nagel'' in ''Ocean's Thirteen'' ''Erich Fellgiebel'' in ''Valkyrie'' ''Mr. Kite'' in ''Across the Universe''
website	eddieizzard.com

}}

Edward John "Eddie" Izzard (born 7 February 1962) is an English stand-up comedian and actor. His comedy style takes the form of rambling, whimsical monologue and self-referential pantomime.

Izzard's works include stand-up sets ''Unrepeatable'', ''Definite Article'', ''Glorious'', ''Dress to Kill'', ''Circle'', ''Sexie'' and ''Stripped''. He had a starring role in the television series ''The Riches'' as Wayne Malloy and has appeared in many motion pictures such as ''Ocean's Twelve'', ''Ocean's Thirteen'', ''Mystery Men'', ''The Cat's Meow'', ''Across the Universe'', The Chronicles of Narnia: Prince Caspian, and ''Valkyrie''.

He has cited his main comedy role model as Monty Python, and John Cleese once referred to him as the "Lost Python". In 2009, he completed 43 marathons in 51 days for Sport Relief in spite of having no prior history of long distance running.

He is also known for his transvestism.

Early life

Izzard was born in Aden, Yemen, then the Colony of Aden in the Aden Protectorate. He was the younger son of British parents Dorothy Ella, a midwife and nurse, and Harold John Izzard, an accountant who was working in Aden with British Petroleum. A year after his birth, the family moved to Bangor in Northern Ireland and lived there until he was five. The family then moved to Skewen in South Wales where his mother died of cancer when Izzard was six and his brother Mark was eight. Following his mother's death, Izzard attended boarding schools: St John's School in Porthcawl, St. Bede's Preparatory School, and Eastbourne College.

Career

Early career

Izzard began to toy with comedy at the University of Sheffield with partner and student friend Rob Ballard. After leaving his accountancy degree course, he and Ballard took their act to the streets, often in Covent Garden. After his split with Ballard, Izzard spent a great deal of the early 1980s working as a street performer in Europe and the United States. He then moved his act into the stand-up comedy venues of Britain. His first gig was at the Banana Cabaret in Balham, London. In 1987, he made his first stage appearance at The Comedy Store, London. In 1989, he met actress Sarah Townsend who was running a Fringe venue at the Edinburgh Festival. He refined his material throughout the 1980s, and in the early 1990s he finally began earning some measure of recognition through his improvisation, in part at his own club "Raging Bull" in Soho.

Success as a comedian

In 1991, Izzard got a spot on the Fry and Laurie produced AIDS benefit ''Hysteria 3,'' where he did his "Wolves" sketch, which broke him into the mainstream comedy circuit and television. His resultant stand-up work brought him British Comedy Awards in 1993 (for ''Live at the Ambassadors''), a part in "Filth" which was a stand up presentation by left-wing sympathetic comedians in aid of raising money for the Terence Higgins Trust in 1994, and 1996 (for ''Definite Article'').

In 1996, he got a part in his first United States-produced film, ''The Secret Agent,'' where he met and befriended Robin Williams. Williams already knew of Izzard's act, and discussed bringing his act to the United States. As a result, Izzard took ''Definite Article'' on a successful stint in New York City in the same year, and as a support act to Williams took ''Dress to Kill'' to San Francisco in 1998. His U.S. breakthrough came in 1999, when ''Dress to Kill'' was shown on the American television channel HBO, about a year or so after he performed the show on tour in the USA, UK and France. Suddenly, America was aware of Izzard, and the show went on to earn him two Emmy Awards in 2000 (for performance and writing).

In 1999, after complaints that his act recycled jokes appearing on his DVDs, the BBC's consumer programme ''Watchdog'' investigated Izzard's live act. Izzard explained that like most comedy performers, he used some of his most successful routines in each show. Nonetheless, Izzard was issued a warning by the Department of Trade and Industry. Since then, Izzard has rarely performed his stand-up act on television, saying that it uses up material at too high a rate, whereas stage material can be continually re-used in front of different audiences for several months.

In 2005, Izzard used his rambling style to provide the voice-over for the British government's television advertisements promoting recycling. The tagline of the ads was "Recycle. The possibilities are endless!" Izzard also performed on stage with Scottish musician Midge Ure at Live8 in Edinburgh, Scotland. He played the piano on the song "Vienna".

In January 2006, the U.S. television network FX announced the production of a new drama series called ''The Riches'' (formerly ''Low Life''). Izzard and British actress Minnie Driver star as a married couple, Wayne and Dahlia Malloy, who have been part of a caravan of con-artist Irish travellers swindling their way across the U.S. with their children. After finding another family killed in a car accident, the Malloys assume their identities and start a new life as law-abiding suburbanites in Baton Rouge, Louisiana. The youngest son has shown a preference for wearing girls' clothing, leading to some speculation that the role was based upon Izzard's experiences. Izzard has stated in several interviews that the character of Sam had been given transvestite tendencies long before he was cast as Wayne Malloy, but he has contributed his perspective to keep the character believable.

Theatrical, TV and film appearances

In 1994, Izzard made his West End drama debut as the lead in the world premiere of David Mamet's ''The Cryptogram'' with Lindsay Duncan, in the production at London's Comedy Theatre. The success of that role led to his second starring role in David Beaird's black comedy ''900 Oneonta''. In 1995, he portrayed the title character in Christopher Marlowe's ''Edward II''.

In 1998 Izzard appeared briefly on stage with the Monty Python team in ''The American Film Institute's Tribute to Monty Python'' (also referred to as ''Monty Python Live at Aspen''). He walked on stage with the five surviving Pythons and he was summarily escorted off by Eric Idle and Michael Palin as he attempted to participate in a discussion about how the group got together.

Izzard portrayed comedian Lenny Bruce in the 1999 production of Julian Barry's 1971 play ''Lenny''. In 2001, he replaced Clive Owen in Peter Nichols' 1967 play ''A Day in the Death of Joe Egg'' at the Comedy Theatre. Izzard and Victoria Hamilton then repeated their lead roles when the show was brought to Broadway in 2003, with The Roundabout Theatre Company production. The revival received four Tony Award nominations including Best Revival of a Play, Best Leading Actor and Actress for its stars Izzard and Hamilton in their Broadway debuts, and Best Direction for Laurence Boswell. In June 2010, Izzard replaced James Spader in the role of Jack Lawson in David Mamet's play ''Race'' on Broadway.

Izzard has appeared in numerous films, starting with 1996's ''The Secret Agent''. He has appeared as several real-life individuals, including Charlie Chaplin in ''The Cat's Meow'', actor Gustav von Wangenheim in ''Shadow of the Vampire'' and General Erich Fellgiebel in ''Valkyrie''. Other roles have included Mr. Kite in ''Across the Universe'', Lussurioso in ''Revengers Tragedy'' and criminal expert Roman Nagel in ''Ocean's Twelve'' and ''Ocean's Thirteen''. Voice work has included the titular It in ''Five Children and It'', Nigel in ''The Wild'' and the mouse warrior Reepicheep in ''The Chronicles of Narnia: Prince Caspian.'' He said in 2009 that he would not be reprising his role as Reepicheep and the role was ultimately played by Simon Pegg in ''The Chronicles of Narnia: The Voyage of the Dawn Treader''.

Izzard appeared in the BBC science fiction miniseries ''The Day of the Triffids'' based on the 1951 novel, alongside Jason Priestley, Vanessa Redgrave, Joely Richardson, Dougray Scott and Brian Cox. He played Dr. Hatteras, a skeptical psychology professor, in the Showtime series ''United States of Tara''.

Comic style

Izzard's style is heavily influenced by Monty Python, especially in his use of a stream-of-consciousness delivery that jumps between topics as he free associates on stage. He does not generally work from a script, owing to his dyslexia. Instead, he interrupts himself with new joke ideas, the characters he portrays turn into other characters, and he nonchalantly leaps from topic to topic. This often results in brief pauses in the routine which he fills with 'so, yeah', and other verbal tics that have become his trademarks. Thinking aloud is also part of Izzard's ongoing attempt to make the process of writing the show itself part of the humour. As he put it in a 2004 interview with ''The Guardian'', "It's the oral tradition. Human beings have been doing it for thousands of years". He frequently notes the reaction to a joke midstream by pretending to write on his hand ("Should be funnier"; "Lost them there"; "They didn't believe me"; "They didn't follow, never do that again", "never link those two[references] together ever again.") He asks the audience questions and verbally engages with hecklers.

Among Izzard's comic talents are mimicry and mime. He portrays God as an authority figure using the voice of James Mason and casts Sean Connery as Noah; these impersonations appear in many of his performances. Izzard also imitates activities such as sawing wood, vacuum cleaning, and mowing the lawn, anthropomorphising the machines with accents and personalities. Successful impressions, such as his Scottish clarinet teacher, Mrs. Badcrumble, become running gags which recur in different shows. He tackles topics both contemporary and historic, including frequent re-imaginings of historical events which result in scenes like 'Cake or Death: Church of England runs the Inquisition', or 'Jesus Ministers to the Dinosaurs'.

When asked about his comedy style by George Stroumboulopoulos, host of CBC Television's talk show, ''The Hour'', Izzard described his use of history by saying,

"I just talk complete bullshit. The history, the politics, I noticed that no one was using history, so there's a lot of history lying about the place, and it's all free, and it's on Wikipedia! You know, I use Wikipedia like a crazy idiot, now. Then I take all this stuff, and I regurgitate it into a weird angle".

In 2008, in his ''Stripped'' tour, Izzard began using Wikipedia itself as part of his stand-up act, reading from a live copy of an article and mocking Wikipedia's self-referential editorial style.

Traditionally, Izzard has focused on the creative possibilities of thinking through absurd situations in real time. He also turns much of the attention on himself and his personality, including his cross-dressing ("It is my manifest destiny to wear a dress on all seven continents"). Contemporary pop culture (Harry Potter, ''Star Wars'', etc.) is also a frequent subject, brought up both to critique its weaknesses and to enhance his anecdotes.

His bent towards the surreal even went so far as to produce a sitcom called Cows in 1997 for Channel 4, a live action comedy with actors dressed in cowsuits.

Transvestism

Izzard started to freely talk about his transvestism in venues like Edinburgh Festival as early as 1992. In his show, ''Dress to Kill'', Izzard describes himself as an "executive", "action" and "professional" transvestite, as "a male tomboy" rather than a drag queen or a "weirdo" transvestite (he cites J. Edgar Hoover and Hermann Göring as examples of the latter). He regularly cross-dresses both on and off stage and makes it clear that cross-dressing is, for him, neither a part of his performance nor a sexual fetish. He remarks in his show ''Unrepeatable'', "Women wear what they want and so do I". According to Izzard, "Most transvestites fancy women". He dismisses claims that he is a male homosexual, saying he is "a straight transvestite or a male lesbian". He has also described himself as "a lesbian trapped in a man's body", transgender, and "a complete boy plus half a girl".

Activism

Izzard has engaged in campaigning work. He is especially well-known as a pro-European Union campaigner supporting the further integration of the UK into the EU. In May 2005 he appeared on the BBC's political debate show ''Question Time'', describing himself as a 'British-European', comparing this with other cultural identities such as 'African-American'. As part of his integration campaigning, he was one of the first people to spend a euro in London. This pan-European approach has influenced his work: he regularly performs in French, in which he is fluent, and occasionally in German, in addition to English. In July 2003, Izzard received an honorary Doctor of Letters from the University of East Anglia in Norwich, England for "pro-Europe campaigning", "his contribution to promoting modern languages and tolerance of other cultures and lifestyles" and for having "transcended national barriers" with his humour.

He has also campaigned unsuccessfully against the closure of the departments of Drama and Languages, Linguistics and Translation at the University of East Anglia, although the department of Drama was later reprieved. In 1998, Izzard was named in a list of the biggest private financial donors to the Labour Party. He appeared in a party political broadcast for the Labour Party in the run up to the 2005 general election. He donated nearly £10,000 to the party in 2008, appeared again in a party political broadcast for the 2009 European election and again in a 2010 election video entitled 'Brilliant Britain'. Izzard appeared in literature to support changing the British electoral system from first-past-the-post to alternative vote for electing Members of Parliament to the House of Commons in the Alternative Vote referendum in 2011.

On 20 July 2006, he received an honorary doctorate in Letters from the Faculty of Arts at the University of Sheffield, where he spent one year on an Accounting and Financial Management course in the early 80s. During his time at the University he established the now-defunct Alternative Productions Society in the Union of Students with the aim of promoting fringe-based arts. On 4 March 2010 he was elected as the Honorary President of the University of Sheffield Union of Students.

On 7 July 2007, Izzard was one of the presenters from the London leg of Live Earth. During an interview for the 2008 Stripped tour, Izzard spoke about becoming more active in European politics as well as running for political office in Europe within the next decade. Izzard added a stop in New Orleans during his 2008 ''Stripped'' tour. All proceeds from the performance of 23 June 2008 were donated to Neighborhood Housing Services of New Orleans.

Marathons

On 27 July 2009, with only 5 weeks' training and no significant prior history of running, Izzard began seven weeks of back-to-back marathon runs (with Sundays off) across the UK to raise money for Sport Relief. He ran from London to Cardiff, to Belfast, to Edinburgh, and back to London carrying flags of England, Scotland or Wales depending on which country he was in, and carried a self-designed green flag bearing a white dove when in Northern Ireland. The blog Eddie Iz Running was a document of his road running marathon, in which he ran 43 marathons in 51 days. He completed the run on 15 September 2009, after having run at least 27 miles each day, 6 days a week for 7 weeks straight, covering more than 1,100 miles across the UK.Izzard received a special award at BBC Sports Personality of the Year 2009 for his achievements.

Izzard ran his final marathon in five hours and 30 seconds, narrowly outside his projected time. However, had he not stopped and waited 20 minutes for his film crew to catch up with him he could have finished well under his target time. In March 2010, Izzard took part in the Sport Relief Mile event.

Following the completion of the marathon runs, Izzard has started training to take part in an Ironman Triathlon, saying he has become fascinated with fitness "because there's no point in throwing away all that training".

Personal life

During his ''Stripped'' tour, Izzard said he realised he was an atheist. "I was warming the material up in New York, where one night, literally on stage, I realised I didn’t believe in God at all. I just didn’t think there was anyone upstairs."

He keeps his romantic life private, saying one of the reasons is due to the wishes of his companions not wanting to become content for his show. Izzard dated Sarah Townsend, the director of the documentary ''Believe: The Eddie Izzard Story'', whom he first met while she was running a Fringe venue at the Edinburgh Festival in 1989.

Izzard speaks French and has performed stand up in French during his shows. He also speaks German and used it in the 2001 film ''All the Queen's Men''.

Critical reception

On 18 March 2007, Izzard was listed as number 3 of the 100 Greatest British National Comedians (just behind Peter Kay at number 2 and Billy Connolly at number 1) as part of British television station Channel 4's ongoing ''100 Greatest...'', series. However in the 2010 updated version of the list he was ranked 5th In a 2005 poll to find ''The Comedian's Comedian'', Izzard was voted amongst the top 20 greatest comedy acts ever by fellow comedians and comedy insiders. He was number 75 in Comedy Central's ''100 Greatest Stand-ups of All Time''.

During the 1999 television special ''It's... the Monty Python Story'', which Izzard hosted, John Cleese said Izzard was the "Lost Python"; Izzard furthered that idea via his substitution for Graham Chapman in public performance of Python material with the rest of the original members of the troupe. He also made a cameo appearance in the Python reunion interview ''Monty Python Live At Aspen''.

In 2008, Izzard received the James Joyce Award of the Literary and Historical Society of UCD, Dublin, Ireland. In March 2010, the Students Union of the University of Sheffield overwhelmingly elected him their honorary President.

Discography and appearances

Stand-up

''Live at the Ambassadors'' (15 November 1993)

''Unrepeatable'' (14 March 1994)

''Definite Article'' (21 October 1996)

''Glorious'' (17 November 1997)

''Dress to Kill'' (9 November 1998)

''Circle'' (18 November 2002)

''Sexie'' (26 November 2003)

''Stripped'' (23 November 2009)

Stage

''900 Oneonta'' (1994)

''The Cryptogram'' (1994)

''Edward II'' (1995)

''Lenny'' (1999)

''A Day in the Death of Joe Egg'' (2001–2002, 2003)

''Trumbo'' (2003)

''Race'' (2010)

Filmography

''The Oncoming Storm'' (1995) as Luthor Keeton

''The Secret Agent'' (1996) as Vladimir

''Velvet Goldmine'' (1998) as Jerry Devine

''The Avengers'' (1998) as Bailey

''Mystery Men'' (1999) as Tony P

''The Criminal'' (1999) as Peter Hume

''Circus'' (2000) as Troy

''Shadow of the Vampire'' (2000) as Gustav von Wangenheim

''The Cat's Meow'' (2001) as Charlie Chaplin

''All the Queen's Men'' (2001) as Tony Parker

''Revengers Tragedy'' (2002) as Lussurioso

''Alien Invasion'' (2003) as Brik

''Blueberry'' aka ''Renegade'' (2004) as Prosit

''Five Children and It'' (2004) as It (voice)

''Romance & Cigarettes'' (2004) as Gene Vincent

''Ocean's Twelve'' (2004) as Roman Nagel

''The Aristocrats'' (2005) as Himself

''The Wild'' (2006) as Nigel (voice)

''My Super Ex-Girlfriend'' (2006) as Professor Bedlam

''Ocean's Thirteen'' (2007) as Roman Nagel

''Across the Universe'' (2007) as Mr. Kite

''The Chronicles of Narnia: Prince Caspian'' (2008) as Reepicheep (voice)

''Igor'' (2008) as Dr. Schadenfreude (voice)

''Valkyrie'' (2008) as Erich Fellgiebel

''Rage'' (2009) as Tiny Diamonds

''Every Day'' (2009) as Garrett

''The Other Side'' (2009) as Dean Bellamy

''Believe: The Eddie Izzard Story'' (2009) as Himself

''Cars 2'' (2011) as Miles Axelrod

''Snow White and the Huntsman'' (2012) as Tiberius

TV appearances

''Barf Bites Back (Amnesty International Gala)'' (1991) – ITV

''Open Fire'' (1994)

''Have I Got News for You'' (1994, 1995 and 1996) – BBC Two

''Aristophanes: The Gods are Laughing'' (1995)

''Whose Line Is It Anyway?'' (1995)

''Tales from the Crypt'' (1996) – HBO

''Clive Anderson Talks Back'' (1996)

''Inspector Derrick'' (1997)

''Channel Izzard'' (1997)

''The Roseanne Show'' (1998)

''Rex the Runt'' (1998) – BBC

''Shooting Stars'' (1998) – BBC

''Parkinson'' (3 times)

''Dennis Miller Live'' (1999) – HBO

''Python Night – 30 Years of Monty Python'' (1999) – BBC

''Good News Week'' (2000) – Network 10

''Mongrel Nation'' (2002) – Discovery Channel

''The Caroline Rhea Show'' (2002)

''The Tonight Show with Jay Leno'' (2002, 2004 and 2007)

''The Tonight Show with Conan O'Brien'' (2009)

''40'' (2003) – Channel 4

''Late Night with Conan O'Brien'' (2003, 2008) NBC

''QI'' (Unaired pilot- 2002 or 2003, and 2010)

''Top Gear'' (2004) – BBC Two

''Last Call with Carson Daly'' (2005)

''The Sharon Osbourne Show'' (2006)

''Late Show with David Letterman'' (6 times)

''Late Late show with Craig Kilborn'' (4 times)

''The Late Late Show with Craig Ferguson'' (2006, 2008, 2009, 2010, 2011)

''The Henry Rollins Show'' (2006)

''The Paul O'Grady Show'' (2009)

''The Secret Policeman's Ball'' (2006)

''Kitchen'' (2007) – five

''Comedy Cuts'' (interview) (2007)

''The Hour'' (2007)

''Friday Night with Jonathan Ross'' (2007 and 2009)

''The Daily Show'' (2000, 2003 and 2007)

''The Riches'' (2007–2008)

''The Secret Policeman's Ball'' (2008)

''The Graham Norton Show'' (2008)

''Late Night with Jimmy Fallon'' (2009)

''Kevin Pollak's Chat Show'' (2009)

''BBC Sports Personality of the Year'' (2009 award winner)

''The Day of the Triffids'' (2009)

''Marathon Man'' (2010)

''The Simpsons'' episode ''To Surveil with Love'' (2010)

''Chelsea Lately'' (2010)

''United States of Tara'' (2011)

''Alan Carr: Chatty Man'' (2011)

Video game

''102 Dalmatians: Puppies to the Rescue'' – Sgt. Tibbs the Cat (voice)

Future projects

Eddie Izzard said in a personal appearance (for his biopic ''Believe'') that he is currently putting together a script for a movie as a conclusion to ''The Riches''. He said the plan is to "pick up exactly where we left off, and we think we're going to make a film of the next bit". As of 24 May 2010 there are no indications that this film will ever be made, leaving ''The Riches'' without a conclusion.

He has announced for future tours that a dollar out of each ticket sale will be appropriated to supplying Africa with contraceptives and other means of sexual protection.

See also

Cross-dressing in film and television

References

External links

Official web site

BBC America – Eddie Izzard

Interview with Izzard – ''The Observer'', 3 October 2004

''It's stupid and I love it – the Goon Show and me'' – ''The Guardian'', 14 February 2005.

Izzard interviewed by Bono – ''The Independent'', 16 May 2006

Venus Zine Staff Picks: Eddie Izzard, Dress to Kill

Eddie Izzard Category:1962 births Category:People from Aden Category:Drama Desk Award winners Category:English atheists Category:English buskers Category:English comedians Category:English film actors Category:English voice actors Category:English television actors Category:English stand-up comedians Category:Cross-dressers Category:Living people Category:Old Eastbournians Category:Emmy Award winners Category:People educated at Oakleigh House School

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