- published: 14 Oct 2015
- views: 70092
In physics and electrical engineering, a conductor is an object or type of material that allow the flow of electrical current in one or more directions. A metal wire is a common electrical conductor.
In metals such as copper or aluminum, the mobile charged particles are electrons. Positive charges may also be mobile, such as the cationic electrolyte(s) of a battery, or the mobile protons of the proton conductor of a fuel cell. Insulators are non-conducting materials with few mobile charges that support only insignificant electric currents.
The resistance of a given conductor depends on the material it is made of, and on its dimensions. For a given material, the resistance is inversely proportional to the cross-sectional area; for example, a thick copper wire has lower resistance than an otherwise-identical thin copper wire. Also, for a given material, the resistance is proportional to the length; for example, a long copper wire has higher resistance than an otherwise-identical short copper wire. The resistance R and conductance G of a conductor of uniform cross section, therefore, can be computed as
Khan Academy is a non-profit educational organization created in 2006 by educator Salman Khan with the aim of providing a free, world-class education for anyone, anywhere. The organization produces short lectures in the form of YouTube videos. In addition to micro lectures, the organization's website features practice exercises and tools for educators. All resources are available for free to anyone around the world. The main language of the website is English, but the content is also available in other languages.
The founder of the organization, Salman Khan, was born in New Orleans, Louisiana, United States to immigrant parents from Bangladesh and India. After earning three degrees from the Massachusetts Institute of Technology (a BS in mathematics, a BS in electrical engineering and computer science, and an MEng in electrical engineering and computer science), he pursued an MBA from Harvard Business School.
In late 2004, Khan began tutoring his cousin Nadia who needed help with math using Yahoo!'s Doodle notepad.When other relatives and friends sought similar help, he decided that it would be more practical to distribute the tutorials on YouTube. The videos' popularity and the testimonials of appreciative students prompted Khan to quit his job in finance as a hedge fund analyst at Connective Capital Management in 2009, and focus on the tutorials (then released under the moniker "Khan Academy") full-time.
Electrical Conductivity
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WESTERN MEAT MARKET at MACRO Testaccio
YPhenomenon (Quadraphonic version) 2010
You will learn about "Electrical Conductivity" in this video. Electrical conductivity is the ability of a material to conduct electricity. Take an electrical circuit consisting of a bulb, switch and a cell. Connect wood to the circuit. The bulb does not glow indicating that wood is a poor conductor of electricity. Now connect a paper roll to the circuit. The bulb does not glow, indicating that paper is also a poor conductor of electricity. Now, take a metal like iron and connect it in the same circuit. The bulb glows, indicating that iron is a good conductor of electricity. Similarly, other metals like copper, silver etc. also make good conductors of electricity. Hence, from the above experiment we can say that most metals are good conductors of electricity.
Charge can flow through some materials, but not others. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/electric-charge-electric-force-and-voltage/charge-electric-force/v/conservation-of-charge?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/electric-charge-electric-force-and-voltage/charge-electric-force/v/coulombs-law?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'...
Visit Allied Wire & Cable at http://www.awcwire.com - There are many components that go into an electrical cable, from the conductor, to the insulation, to any shielding or jacketing it may have. Arguably, the most important component is the conductor, because without it, you don't have a cable. The conductor is at the center of the cable, and it carries the electrical signal from point A to point B. While that is the simplest definition, a lot goes into making and choosing the proper conductor for a particular cable. You need to choose the material, and any applicable coating. And what about stranding, or do you need solid? All of these choices are important when deciding on what conductor you want. You can choose copper, silver, nickel, silver or nickel plated, or a variety of h...
Simple, easy, and clear explanations of electrical concepts like Conductors and Insulators, Charging and Discharging, Charging by Induction, Current Electricity, Potential Difference, and Resistance. CREDITS Senior Physics Electricity Narrated by James Moriarty Written by William Konrad Consultant -- Malcolm Coutts Computer Animation by Animations Drouin, Inc. Produced by David Chamberlain Designed and Produced by Northey Productions for TVOntario The Ontario Educational Communications Authority MCMLXXXVI
The best and the biggest channel for science videos for kids. In this science education video, children can learn all about conductors and insulators. Differences and reasons for something being a good or bad conductor of electricity or heat are very clearly explained.
Overview of Electrical Conductors and Insulators
line conductor and types eg. aluminum , silver , copper
The conductivity of a liquid can be measured using the conductive or toroidal measuring principles. This video shows what it is about and how these measuring principles work. www.products.endress.com/conductivity
This video lists and sorta explains the rules of conductors so you can solve problems. If you still wonder why charges like pointy bits, please view my video (and the ensuing glorious discussion with other nerds in the comments) right hurre: https://www.youtube.com/watch?v=IMFgxAmYYp4
This short science video in English is meant for upper primary class children (age 11-13 years). This video explains the concept of conducting and non conducting materials (insulators) - using a simple animation of a school bus passing through a bridge.
Faye Toogood's new interactive installation, The Conductor, makes its debut at Established & Sons as part of the London Design Festival 2013. Visitors to the gallery will be able to watch - and control - a rhythmic symphony of light played out on a giant circuit board of zinc-plated steel, passivated to provide insulation from electrical interference. Echoing the graphic of an equaliser, 160 fluorescent bulbs, fed by a skein of wires and cables, light up in alternating currents. The circuit is completed by the audience themselves, who have the capacity to “conduct” this electrical spectacle from the centrepiece switchboard - mounted on a mesh structure, the intricate pigmented resin blocks are arrayed with scores of archaic-looking analogue toggles that operate the light orchestra. The...
Decker Yeadon is an architectural research firm that is as comfortable entering competitions as it is with nanotechnology. Trained as architects but fascinated by chemistry, co-founders Martina Decker and Peter Yeadon are using carbon nanotubes to experiment with new building materials that move without a motor. Their research could lead to innovations such as window shades that open and close depending on the room temperature, no mechanical parts needed. Watch their NanoINK transform an ordinary strip of printer paper into a flexible electrical conductor.
WESTERN MEAT MARKET (2011) performance art by Francesca Fini WMM è una performance con cui voglio raccontare la carne intesa come l'essenza stessa, materiale e fisica dell'altro, lo spazio che occupa, il suo odore nell'aria, e la sua interazione con noi. La carne è fatta di tutto, ed è un conduttore di mondi con i quali cerchiamo una qualche forma di dialogo, di negoziazione. Io racconto questo cortocircuito, il cortocircuito della magia del tocco e del riconoscimento della presenza dell'altro, del mondo, di qualcosa di sfuggente ma innegabile, attraverso l'interaction design. Ho un capo di un elettrodo a basso voltaggio nel braccio, che polarizza tutto il mio corpo, attraversato parte a parte da un flusso di energia a tratti percepibile. L'altro polo dell'elettrodo è fissato alla carta s...
Title:YPhenomenon (Quadraphonic version) Form: Audio-Visual installation Year: 2010 Artist: Yung-Ta CHANG “Granulated sounds, sometimes concentrated, sometimes diffuse, spread throughout the space. Grainy images accompany and collide with the sounds, moving through your body.” —Chang Yung-Ta Y Phenomenon is a series of sound-art pieces. The “Y” stands for the city of Yamaguchi in Japan. While the sound artist Chang Yung-Ta was participating in an internship at the Yamaguchi Center for Arts and Media, he collected the sounds of Japanese life, such as those from nature, those made by people, and traffic and television program sounds. Chang then granulated and rearranged the sounds using digital modulation techniques making each segment of sound into a tiny granule, which travels through...
Rachida Ziani/Dewi de Vree (NL/F) Elektrolab Live Media Rachida Ziani and Dewi de Vree, two artist from the Hague, are developing Elektrolab, a series of electrical music performances and installations based on electrochemical principles. Elektrolab is based on the first battery, invented by Alessandro Volta in 1800. By making an 'open' battery in which the different elements are taken apart, enlarged and amplified, they show the process of generating electricity. A device of which many are hidden in the portable machines around us, is opened up and the beauty of this natural phenomenon is made visible. Most electronic machines and computer systems nowadays lack the tactile, sensory impressions that we experience in the rest of our daily surroundings. With Elektrolab, Ziani and de Vree ...
Faraday Demonstration; of how a changing magnetic field can induce an electric current in a conductor. Like how changes in Earth's magnetic field can induce damaging electrical currents in electrical distribution power lines, telephone lines, and oil and gas pipelines made out of metal.
In this video Dr Ingrid Graz shows us a thin layer of gold on top of rubber. Cracks in the gold allow it to stretch and we can use this for stretchable electronics. Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday and you can see them here: www.vimeo.com/channels/micro Dr Graz: “Imagine a future mobile phone that can be wrapped around your wrist or an MP3 player that is integrated in your T-shirt. Stretchable electronics is a new evolution of electronics - the idea behind is to create electronic devices that can be rolled, flexed, deformed and even stretch like a rubber band. To enable stretchable electronics we use rubber such as silicone coated with a very thin layer of ...
www.gabrieledini.com These are the original words from the transcription of Euripides, that presents to us Cadmo as the the discoverer of new lands to build on, and from which, thanks to the action of sowing teeth, the greek myth of the alphabet and of fonetic letters starts. The installation wants to recreate the scene commonly attributed mythologically to the birth of writing and place it side by side with its direct evolution, the contemporary hypertext dimension. The great change that writing is living, revolution characterized both by the profound diversity of reading and writing supports and by the method of building various alternative ans extremely quicks paths, with interconnections and dynamic and linked texts that constitute a thick cross-net of information. The mythological ...
A public artefact focusing and directing electrical energy from lightning strikes. When struck the six meter high system sends a current down an arranged set of stainless steel forks drilled into a chunk of wood. In the same way as when a tree is struck, the current takes the most electrically conductive route to the earth, splitting the wood down regions of sap-rich cells and air pockets rapidly expanded by the passing current. What is revealed are beaten and battered forms, capturing the intensity and energy of the split second lightning strike. Situated upon isolated hilltops, the object focuses our attention on these monumental and unrestrained forces of nature and connects us with this unprecedented, fleeting moment of power. The conductor and fork system is made from varying stainle...
The Fruits of Labour is an upcoming short film, written and directed by George Purves. CAST Father - Michael Dacre Son - Marcus Kai Girl - Holly Bodimeade CREW Writer/Director - George Purves Producer - Sarah Stevenson Director of Photography - Tom Ormerod Composer - Robin Schlochtermeier Executive Producers - Colin O'Neill, Moira Scarlett Production Assistant - Ali Mair Production Runner - Michael Dorgan 1st AD - Max Selby 2nd AD - Leanne Bayliss Script Supervisor/Continuity - Heidi Wort Gaffer - Greg Bond Focus Puller - Ester Febriana Clapper Loader - Keith Kopp 2rd AC - Mark Marchlewski Best Boy (Electrical) - Ian Halverson Key Grip - Sam Reeves Sound Recordist - Lingli Dong Boom Operator - Chandrachoodan Gopalakrishnan Sound Designer - George Purves Dubbing Mixer - Claudio Ahlers ...
You will learn about "Electrical Conductivity" in this video. Electrical conductivity is the ability of a material to conduct electricity. Take an electrical circuit consisting of a bulb, switch and a cell. Connect wood to the circuit. The bulb does not glow indicating that wood is a poor conductor of electricity. Now connect a paper roll to the circuit. The bulb does not glow, indicating that paper is also a poor conductor of electricity. Now, take a metal like iron and connect it in the same circuit. The bulb glows, indicating that iron is a good conductor of electricity. Similarly, other metals like copper, silver etc. also make good conductors of electricity. Hence, from the above experiment we can say that most metals are good conductors of electricity.
Charge can flow through some materials, but not others. Created by David SantoPietro. Watch the next lesson: https://www.khanacademy.org/science/physics/electric-charge-electric-force-and-voltage/charge-electric-force/v/conservation-of-charge?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Missed the previous lesson? https://www.khanacademy.org/science/physics/electric-charge-electric-force-and-voltage/charge-electric-force/v/coulombs-law?utm_source=YT&utm;_medium=Desc&utm;_campaign=physics Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'...
Visit Allied Wire & Cable at http://www.awcwire.com - There are many components that go into an electrical cable, from the conductor, to the insulation, to any shielding or jacketing it may have. Arguably, the most important component is the conductor, because without it, you don't have a cable. The conductor is at the center of the cable, and it carries the electrical signal from point A to point B. While that is the simplest definition, a lot goes into making and choosing the proper conductor for a particular cable. You need to choose the material, and any applicable coating. And what about stranding, or do you need solid? All of these choices are important when deciding on what conductor you want. You can choose copper, silver, nickel, silver or nickel plated, or a variety of h...
Simple, easy, and clear explanations of electrical concepts like Conductors and Insulators, Charging and Discharging, Charging by Induction, Current Electricity, Potential Difference, and Resistance. CREDITS Senior Physics Electricity Narrated by James Moriarty Written by William Konrad Consultant -- Malcolm Coutts Computer Animation by Animations Drouin, Inc. Produced by David Chamberlain Designed and Produced by Northey Productions for TVOntario The Ontario Educational Communications Authority MCMLXXXVI
The best and the biggest channel for science videos for kids. In this science education video, children can learn all about conductors and insulators. Differences and reasons for something being a good or bad conductor of electricity or heat are very clearly explained.
Overview of Electrical Conductors and Insulators
line conductor and types eg. aluminum , silver , copper
The conductivity of a liquid can be measured using the conductive or toroidal measuring principles. This video shows what it is about and how these measuring principles work. www.products.endress.com/conductivity
This video lists and sorta explains the rules of conductors so you can solve problems. If you still wonder why charges like pointy bits, please view my video (and the ensuing glorious discussion with other nerds in the comments) right hurre: https://www.youtube.com/watch?v=IMFgxAmYYp4
This short science video in English is meant for upper primary class children (age 11-13 years). This video explains the concept of conducting and non conducting materials (insulators) - using a simple animation of a school bus passing through a bridge.
Faye Toogood's new interactive installation, The Conductor, makes its debut at Established & Sons as part of the London Design Festival 2013. Visitors to the gallery will be able to watch - and control - a rhythmic symphony of light played out on a giant circuit board of zinc-plated steel, passivated to provide insulation from electrical interference. Echoing the graphic of an equaliser, 160 fluorescent bulbs, fed by a skein of wires and cables, light up in alternating currents. The circuit is completed by the audience themselves, who have the capacity to “conduct” this electrical spectacle from the centrepiece switchboard - mounted on a mesh structure, the intricate pigmented resin blocks are arrayed with scores of archaic-looking analogue toggles that operate the light orchestra. The...
Decker Yeadon is an architectural research firm that is as comfortable entering competitions as it is with nanotechnology. Trained as architects but fascinated by chemistry, co-founders Martina Decker and Peter Yeadon are using carbon nanotubes to experiment with new building materials that move without a motor. Their research could lead to innovations such as window shades that open and close depending on the room temperature, no mechanical parts needed. Watch their NanoINK transform an ordinary strip of printer paper into a flexible electrical conductor.
WESTERN MEAT MARKET (2011) performance art by Francesca Fini WMM è una performance con cui voglio raccontare la carne intesa come l'essenza stessa, materiale e fisica dell'altro, lo spazio che occupa, il suo odore nell'aria, e la sua interazione con noi. La carne è fatta di tutto, ed è un conduttore di mondi con i quali cerchiamo una qualche forma di dialogo, di negoziazione. Io racconto questo cortocircuito, il cortocircuito della magia del tocco e del riconoscimento della presenza dell'altro, del mondo, di qualcosa di sfuggente ma innegabile, attraverso l'interaction design. Ho un capo di un elettrodo a basso voltaggio nel braccio, che polarizza tutto il mio corpo, attraversato parte a parte da un flusso di energia a tratti percepibile. L'altro polo dell'elettrodo è fissato alla carta s...
Title:YPhenomenon (Quadraphonic version) Form: Audio-Visual installation Year: 2010 Artist: Yung-Ta CHANG “Granulated sounds, sometimes concentrated, sometimes diffuse, spread throughout the space. Grainy images accompany and collide with the sounds, moving through your body.” —Chang Yung-Ta Y Phenomenon is a series of sound-art pieces. The “Y” stands for the city of Yamaguchi in Japan. While the sound artist Chang Yung-Ta was participating in an internship at the Yamaguchi Center for Arts and Media, he collected the sounds of Japanese life, such as those from nature, those made by people, and traffic and television program sounds. Chang then granulated and rearranged the sounds using digital modulation techniques making each segment of sound into a tiny granule, which travels through...
Rachida Ziani/Dewi de Vree (NL/F) Elektrolab Live Media Rachida Ziani and Dewi de Vree, two artist from the Hague, are developing Elektrolab, a series of electrical music performances and installations based on electrochemical principles. Elektrolab is based on the first battery, invented by Alessandro Volta in 1800. By making an 'open' battery in which the different elements are taken apart, enlarged and amplified, they show the process of generating electricity. A device of which many are hidden in the portable machines around us, is opened up and the beauty of this natural phenomenon is made visible. Most electronic machines and computer systems nowadays lack the tactile, sensory impressions that we experience in the rest of our daily surroundings. With Elektrolab, Ziani and de Vree ...
Faraday Demonstration; of how a changing magnetic field can induce an electric current in a conductor. Like how changes in Earth's magnetic field can induce damaging electrical currents in electrical distribution power lines, telephone lines, and oil and gas pipelines made out of metal.
In this video Dr Ingrid Graz shows us a thin layer of gold on top of rubber. Cracks in the gold allow it to stretch and we can use this for stretchable electronics. Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday and you can see them here: www.vimeo.com/channels/micro Dr Graz: “Imagine a future mobile phone that can be wrapped around your wrist or an MP3 player that is integrated in your T-shirt. Stretchable electronics is a new evolution of electronics - the idea behind is to create electronic devices that can be rolled, flexed, deformed and even stretch like a rubber band. To enable stretchable electronics we use rubber such as silicone coated with a very thin layer of ...
www.gabrieledini.com These are the original words from the transcription of Euripides, that presents to us Cadmo as the the discoverer of new lands to build on, and from which, thanks to the action of sowing teeth, the greek myth of the alphabet and of fonetic letters starts. The installation wants to recreate the scene commonly attributed mythologically to the birth of writing and place it side by side with its direct evolution, the contemporary hypertext dimension. The great change that writing is living, revolution characterized both by the profound diversity of reading and writing supports and by the method of building various alternative ans extremely quicks paths, with interconnections and dynamic and linked texts that constitute a thick cross-net of information. The mythological ...
A public artefact focusing and directing electrical energy from lightning strikes. When struck the six meter high system sends a current down an arranged set of stainless steel forks drilled into a chunk of wood. In the same way as when a tree is struck, the current takes the most electrically conductive route to the earth, splitting the wood down regions of sap-rich cells and air pockets rapidly expanded by the passing current. What is revealed are beaten and battered forms, capturing the intensity and energy of the split second lightning strike. Situated upon isolated hilltops, the object focuses our attention on these monumental and unrestrained forces of nature and connects us with this unprecedented, fleeting moment of power. The conductor and fork system is made from varying stainle...
The Fruits of Labour is an upcoming short film, written and directed by George Purves. CAST Father - Michael Dacre Son - Marcus Kai Girl - Holly Bodimeade CREW Writer/Director - George Purves Producer - Sarah Stevenson Director of Photography - Tom Ormerod Composer - Robin Schlochtermeier Executive Producers - Colin O'Neill, Moira Scarlett Production Assistant - Ali Mair Production Runner - Michael Dorgan 1st AD - Max Selby 2nd AD - Leanne Bayliss Script Supervisor/Continuity - Heidi Wort Gaffer - Greg Bond Focus Puller - Ester Febriana Clapper Loader - Keith Kopp 2rd AC - Mark Marchlewski Best Boy (Electrical) - Ian Halverson Key Grip - Sam Reeves Sound Recordist - Lingli Dong Boom Operator - Chandrachoodan Gopalakrishnan Sound Designer - George Purves Dubbing Mixer - Claudio Ahlers ...
Analysis of electrical conductors in external magnetic fields.
Gauss Law and electric flux through various surfaces, Conductors
Part 3 of UCANDO electrical series semi conductors
The only known electrical conductor materials with a commercial applicability are copper and aluminium. Between these two there is only limited competition because their other characteristics beyond electrical conductivity are so different. Which are these differences, and are there any other materials that may serve as electrical conductors? How about competing technologies such as wireless energy transfer?
A discussion of the electrical properties of materials. Conductors and dielectrics are considered along with current, electric current density, polarization, and permittivity.
Building wiring is the electrical wiring and associated devices such as switches, meters and light fittings used in buildings or other structures. Electrical wiring uses insulated conductors. Wiring safety codes vary by country, and the International Electrotechnical Commission (IEC) is attempting to standardise wiring amongst member countries. Wires and cables are rated by the circuit voltage, temperature and environmental conditions (moisture, sunlight, oil, chemicals) in which they can be used. Colour codes are used to distinguish line, neutral and ground (earth) wires. Read More: https://en.wikipedia.org/wiki/Electrical_wiring
The History of Radio - Documentary Radio is the radiation (wireless transmission) of electromagnetic energy through space.[n 1] The biggest use of radio waves is to carry information, such as sound, by systematically changing (modulating) some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form. Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also...