Answers to Physics Questions

Physics, cosmology, astrophysics, electricity, energy, forces, gravity, light and maths...

18 February 2007

My girlfriend and I were talking about flying in a plane and the fact that the higher you go, the colder it gets. How...

18 February 2007

Every action has an equal and opposite reaction, so how much force is produced by urination? Could it knock someone...

11 February 2007

Why is it that car front windscreens appear more prone to icing than the sides and the rear? This is even when the car...

28 January 2007

Why does 27 degree air feel hot but water of the same temperature feels cold?

14 January 2007

Mirrors reflect visible light. But how effective are they at reflecting other electromagnetic waves like x-rays and...

14 January 2007

Is it dangerous to live 500 metres away from a mobile phone mast?

17 December 2006

We can successfully insulate against heat, and against light, and against sound. Is it possible, do you think, that we...

17 December 2006

I'm right in thinking that matter cannot be destroyed. So is it such that everything that has been created in...

17 December 2006

If you could drill a hole from the North Pole to the South Pole, and it was big enough to drop a stone through, would...

10 December 2006

The big bang theory... what went bang?

10 December 2006

On last week's show you were talking about polonium 210 being difficult to obtain but in fact anyone can buy it...

03 December 2006

What happens if you fire a two bullets from an aircraft moving at 1000mph? One is fired forwards at 1000mph and the...

03 December 2006

If space has a curvature and is expanding outwards, how long before it goes around in a circle and kicks us up the...

19 November 2006

Sometimes when I put my beer (330mL glass bottle) in the deep freeze to rapidly chill it, I can take it out and it...

12 November 2006

Why is it that bubbles are always round?

05 November 2006

Where does the microwave background radiation come from, how was it made and why is it still around?

05 November 2006

Is it really possible to drive a car onto a moving trailer like Knight Rider did?

22 October 2006

Is it true that sound travels further in cold weather than in warm weather and how does this work?

22 October 2006

Why is it that when you're in a car and going past a bunch of other parked cars all in a long row, you hear a...

15 October 2006

We all know that when we open our eyes under water we see blurry images. I believe that this is because water has a...

01 October 2006

What are magnets made out of and how are they made?

24 September 2006

Take a helium balloon and hold it on a piece of string inside a car. Watch what happens to the balloon when the car...

24 September 2006

I was curious about the scaremongering we're hearing about the ice caps melting and flooding everywhere. I thought...