Answers to Physics Questions

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

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

The big bang theory... what went bang?

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

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

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

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

Why is it that bubbles are always round?

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

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

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

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...

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

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

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

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

If we lose gravity, what will happen? Will everything fly up in the air?

Could you please explain to me the very basics of string theory? I failed lego at school and I'm not very...

Can you tell me how carbon dating works?

Tapping the top of an open beer bottle produces a beer volcano - why?

I want to know why a drink can doesn't get shaken up when it falls from a drink dispenser. It falls very hard but...

I was always fascinated with the state of weightlessness and how it works. A month ago I saw a report on artificial...

It's my understanding that you can send electricity wirelessly. Although microwaves are apparently the best way,...