Answers to Physics Questions

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

24 September 2006

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

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...

17 September 2006

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

17 September 2006

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

10 September 2006

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

10 September 2006

Can you tell me how carbon dating works?

06 August 2006

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...

06 August 2006

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

16 July 2006

How does light actually propagate? I know that there are perpendicular electrical and magnetic fields and that they can...

16 July 2006

What's the deal with fusion as a power source? Is it ever going to be economically possible? Is cold fusion the...

16 July 2006

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

25 June 2006

My children can make the screw tops of their plastic soda bottles 'talk'. You wet them and place them upside...

25 June 2006

What's the highest possible temperature that you can achieve?

04 June 2006

Please can you calculate how much extra fuel will be burned by a motorist during the current World Cup campaign as a...

04 June 2006

I've been following the progress of solar panels and hear that they're only about 16% efficient. What's...

28 May 2006

Why do some people suffer so badly with static electric shocks? It's particularly bad when I get out of my car.

28 May 2006

If sound and heat are both vibrations, then why isn't sound hot and heat loud?

28 May 2006

Do you think we'll ever beat the speed of light?

28 May 2006

If you hold your lips closed with your fingers and breathe out as hard as you can, and then release your fingers, you...

21 May 2006

Is white noise something to do with gravity or the big bang?

21 May 2006

If you take a two-litre plastic soda bottle and blow across the lid, you get a very low note. If you squeeze the bottle...

21 May 2006

What is ultrasound? Is it actually sound?

21 May 2006

When I play my flute, sometimes it gets a really screechy noise. What is it? It only happens when I play medium E...

21 May 2006

Why do instruments from different countries not go well together?