Fuse (electrical)
In electronics and electrical engineering, a fuse (from the French fusée, Italian fuso, "spindle") is a type of low resistance resistor that acts as a sacrificial device to provide overcurrent protection, of either the load or source circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, interrupting the circuit that it connects. Short circuits, overloading, mismatched loads, or device failure are the prime reasons for excessive current. Fuses can be alternative to circuit breakers.
A fuse interrupts an excessive current so that further damage by overheating or fire is prevented. Wiring regulations often define a maximum fuse current rating for particular circuits. Overcurrent protection devices are essential in electrical systems to limit threats to human life and property damage. The time and current operating characteristics of fuses are chosen to provide adequate protection without needless interruption. Slow blow fuses are designed to allow harmless short term currents over their rating while still interrupting a sustained overload. Fuses are manufactured in a wide range of current and voltage ratings to protect wiring systems and electrical equipment. Self-resetting fuses automatically restore the circuit after the overload has cleared, and are useful in environments where a human replacing a blown fuse would be difficult or impossible, for example in aerospace or nuclear applications.
Fuse (hydraulic)
In hydraulic systems, a fuse (or velocity fuse) is a component which prevents the sudden loss of hydraulic fluid pressure. It is a safety feature, designed to allow systems to continue operating, or at least to not fail catastrophically, in the event of a system breach. It does this by stopping or greatly restricting the flow of hydraulic fluid through itself if the flow exceeds a threshold.
The term "fuse" is used here in analogy with electrical fuses which perform a similar function.
Hydraulic systems rely on high pressures (usually over 7000 kPa) to work properly. If a hydraulic system loses fluid pressure, (burst hydraulic hose) it will become inoperative and components such as actuators may collapse. This is an undesirable condition in life-critical systems such as aircraft or heavy machinery particularly forklifts. Hydraulic fuses help guard against catastrophic failure of a hydraulic system (for instance, by line breakage or component failure) by automatically isolating the defective branch.
Fuse (explosives)
In an explosive, pyrotechnic device or military munition, a fuse (or fuze) is the part of the device that initiates function. In common usage, the word fuse is used indiscriminately. However, when being specific (and in particular in a military context), the term fuse, describes a simple pyrotechnic initiating device, like the cord on a firecracker whereas the term fuze is sometimes used when referring to a more sophisticated ignition device incorporating mechanical and/or electronic components, such as a proximity fuze for an M107 artillery shell, magnetic/acoustic fuze on a sea mine, spring-loaded grenade fuze,pencil detonator or anti-handling device.
History
The simplest form of fuse is the burning fuse, believed to date back to the 10th century and originating in China. This simple fuse consisted of lightweight paper filled with loose gunpowder, and served as a means of delaying ignition in fireworks. This simple form of burning fuse can still be found today in many modern pyrotechnics. A version of this simple fuse is called visco fuse, and consists of the burning core coated with wax or lacquer for durability and water resistance. The commercial and military version of a burning fuse referred to as safety fuse (invented by William Bickford) is a textile tube filled with combustible material and wrapped to prevent external exposure of the burning core. Safety fuses are used to initiate the detonation of explosives through the use of a blasting cap.
Beta Eridani
Beta Eridani (Beta Eri, β Eridani, β Eri) is the second brightest star in the constellation of Eridanus, located in the northeast end of this constellation near the shared border with Orion. It has the traditional name Cursa. The apparent visual magnitude of this star is 2.796, so it can be viewed with the naked eye in dark skies. Parallax measurements yield an estimated distance of about 89 light-years (27 parsecs) from the Earth.
Properties
β Eridani has a spectral type of A3 III, with the III luminosity class indicating this is a giant star that has consumed the hydrogen at its core and evolved away from the main sequence. The effective temperature of the outer envelope is about 8,104 K, which gives the star a white hue typical of A-type stars. The projected rotational velocity is a rapid 196 km s−1, compared to 2 km s−1 along the Sun's equator. The star is known to vary in apparent visual magnitude, ranging between 2.72 and 2.80. A particularly strong flare up was reported in 1985.
Eta Eridani
Eta Eridani (η Eri, η Eridani) is a star in the constellation Eridanus. It has the traditional name Azha ("the breeding place"). The word Azha is a corruption of Persian آشيانه āšiyāne The (ostrich) nest.
In Chinese, 天苑 (Tiān Yuàn), meaning Celestial Meadows, refers to an asterism consisting of η Eridani, γ Eridani, π Eridani, δ Eridani, ε Eridani, ζ Eridani, π Ceti, τ1 Eridani, τ2 Eridani, τ3 Eridani, τ4 Eridani, τ5 Eridani τ6 Eridani, τ7 Eridani, τ8 Eridani and τ9 Eridani. Consequently, η Eridani itself is known as 天苑六 (Tiān Yuàn liù, English: the Sixth Star of Celestial Meadows.)
Structure
Eta Eridani belongs to spectral class K0 III-IV and has apparent magnitude +4.1. It is 121 light years from Earth.
Coordinates for J2000:
References
Omicron1 Eridani
Omicron1 Eridani (also known as Beid and 38 Eridani) is a star of visual magnitude 4.04. It lies approximately 125 light-years from Earth in the Eridanus constellation and is a class F (F0III) giant with a surface temperature of 7100 K and a luminosity 28 times that of the Sun. In 1971 it was discovered to be a Delta Scuti variable star, with a variation of just a few hundredths of a magnitude with periods of 1.8 and 3.5 days.
Omicron1 has the following equatorial coordinates:
Its Flamsteed designation is 38 Eridani.
Chinese name
In Chinese, 九州殊口 (Jiǔ Zhōu Shū Kǒu), meaning Interpreters of Nine Dialects, refers to an asterism consisting of ο1 Eridani, 39 Eridani, ξ Eridani, ν Eridani, 56 Eridani and 55 Eri. Consequently, ο1 Eridani itself is known as 九州殊口二 (Jiǔ Zhōu Shū Kǒu èr, English: the Second Star of Interpreters of Nine Dialects.)
References
Fuse, Eri Filmography
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2013, role: actress
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2013, role: actress , character name: Natsue
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2012, role: actress
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2009, role: actress , character name: Sen Ichinose
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2007, role: actress , character name: Sendai
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2006, role: actress
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2005, role: actress , character name: Etsuko Kugitani
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2005, role: actress , character name: Editor-in-Chief
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1990, role: actress , character name: Fumiyo
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1989, role: actress , character name: Masuho's colleague
Shadhikar
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tumi ki shunecho
ei shomoyer nirjash
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shob e adhar timir?
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chitkar kore janai
odhikarer kotha
tumi ki shunecho
ei shomoyer nirjash
gontobbe paa barai
kisher e hotashai
tumi ki diyecho
tomar oi shathider
jara upore takai
tomai upor bhebe?
tumi ki janona
akasher tarara
nibhe gele ek e ek
shob e adhar timir?
amra to dekhte chai
bhor er surjo laal
raat periye asha
dhorjer shur
bohudur pothe
kono pore ache
joma howa bishonnota
bhenge shamne..
shimana dekha jai
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hotasha muche jai
notun suchonai..
tumi ki diyecho
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