What is the speed of light of a headlamp of a plane travelling at a speed of 1000km/s

aby001234

Is it same as 'c'?
or is it greater (though it may be very small difference) than the normal
speed of light?

Pengwuino

The speed of light is 'c' no matter how fast an observer is going. That's one of the guiding principals behind special relativity.

*DaveC426913*

Quote by aby001234

Is it same as 'c'?
or is it greater (though it may be very small difference) than the normal
speed of light?

Passengers aboard airplane measure it as 300,000km/s (c).
Onlookers on Earth on measure it as 300,000km/s (c).
Aliens passing by overhead at .9c measure it as 300,000km/s (c).

Curl

see here

http://en.wikipedia.org/wiki/Special_relativity

cragar

the speed of light comes from the solution to wave equation for E and B fields.
And then number is constant.

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aby001234	What is the speed of light of a headlamp of a plane travelling at a speed of 1000km/s Tweet Is it same as 'c'? or is it greater (though it may be very small difference) than the normal speed of light?

Pengwuino Recognitions: Gold Member	The speed of light is 'c' no matter how fast an observer is going. That's one of the guiding principals behind special relativity.

Curl	What is the speed of light of a headlamp of a plane travelling at a speed of 1000km/s see here http://en.wikipedia.org/wiki/Special_relativity

cragar	the speed of light comes from the solution to wave equation for E and B fields. And then number is constant.