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Ives McGaffey
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∙ 11y ago
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Who invented the vaccum tube?
Lee De Forest invented vacuum tubes.
Has a vacuum floor ever been invented?
No. A vaccum floor has never been invented
What are differences and similarities of sound and light?
sound can travel in vaccum but light cannot travel in vaccum
Is refractive index of air less than vacuum?
No, refractive index(RI) of air is more than that of vaccum. Infact RI of any medium is more than vaccum. RI of vaccum is 1. RI of any medium = c/v where c is speed of light in vaccum v is speed if light in medium whose RI with respect to vaccum is found. It is known that speed of light is maximum in vaccum so v < c, and RI > 1.
Is there air in light bulbs?
It is vaccum.
Who invented the vaccum tube?
Lee De Forest invented vacuum tubes.
Has a vacuum floor ever been invented?
No. A vaccum floor has never been invented
What other items were invented in the 1900s?
there was yo-yos dolls jumpropes gun silencers and the vaccum cleaner
Who invented which computer?
Charles Babbage invented the first computer made up of vaccum tubesSteve jobs invented the most innovative computer-mac bookHewlett-Packard invented the most used computers now-hp
How heavey is this vaccum?
This Bissell vaccum weighs 28 pounds when it comes to the total weight of the entire vaccum.
How do eliminate air?
use a vaccum and a vaccum airtight chamber
What is the cause of no heat in 1999 e350?
look for vaccum leak(vaccum control switch, diaphragm valves or vaccum lines).
What are differences and similarities of sound and light?
sound can travel in vaccum but light cannot travel in vaccum
Why does an astronaut have to wear a helmet on the moon?
There is no air on the moon. It is a vaccum. Exposure to a vaccum will kill a person in seconds.
Is refractive index of air less than vacuum?
No, refractive index(RI) of air is more than that of vaccum. Infact RI of any medium is more than vaccum. RI of vaccum is 1. RI of any medium = c/v where c is speed of light in vaccum v is speed if light in medium whose RI with respect to vaccum is found. It is known that speed of light is maximum in vaccum so v < c, and RI > 1.
Vaccum or vacuum?
It is vacuum
How user friendly is this vaccum for someone with a bad back?
This vaccum offers a detachable canister to make cleaning easier on the back.
