Recent content by ph_low

well to put it simply, you couldn't reach the speed of light because of fuel. to keep increasing your acceleration would require more and more fuel, which would in turn make your craft heavier. because your craft is now heavier, it needs MORE fuel to compensate for that and travel faster. as...

about the colour, i think its related to the temperature of whatever is being set on fire, a higher temperature flame will be giving out more energy, therefore changing the colour of the flame.

I asked both my physics teachers this a few weeks back. I think i remember one of them saying that it was excited electrons, but i forgot what the other one said :frown:

for shallow waves (where \lambda \leq 1/2 depth) in a tub, can anyone tell me why... speed\ of\ wave = \sqrt{gravity * depth} i mean, is there a way to get this formula by deriving from others?

yep i read it, extremely interesting.

the other week i helped my teacher in a lesson with 12 year olds. the most useful thing i did was tell them they had the metre stick the wrong way round when measuring themselves.hehe (p.s I am 17)

I've just been doing some reading on Black Holes, and i found that theoretically there is an infinite mass at the singularity inside a black hole. Surely something with an infinite mass would require an infinite energy, but I've always thought that in the universe there was only a finite amount...