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Well simply because they are "ultra(very) light (low weight)"
Let me clarify. There are heavy aircraft, like big transport planes. There are medium heavy aircraft like passenger jets. There are light (not heavy) aircraft like little private planes. Then there are Ultra Light aircarft which are vey light weight. So ultra meaning very and light meaning the opposite to heavy ... which maybe this answer is! LOL
What else can I help you with?
What is the name for the aeroplane pilot?
The name for the aeroplane pilot is simply pilot. The pilot is usually a Captain.
What is the comparison between visible light and ultra violet light?
You can see visible light but not ultra violet light.
Name an import and export company?
Boeing: imports aeroplane Parts, exports aeroplane.
What is the name of any plane that he flies on?
the answer is an aeroplane
What type of light is at 365nm?
It is ultra violet light.
What is the name of a aeroplane with two wings each?
biplane
What is the name of aeroplane that can land on water and land?
anfibian
What is the particular name for people traveling in aeroplane?
Passengers
What is name of Memory chips erased by ultra violet light?
EPROM (Erasable Programmable Read Only Memory)
Is artificial black light colorless?
No, black light is a common name for Ultra-Violet light. You cannot see UV radiation so some simple people have referred to it as black light.
Individual wavelength of visible ultra violet?
Ultra violet light is not visible!
Who made the areoplane?
The aeroplane was invented by the Light brothers, the 4th and 5th brothers
