Answers to Physics Questions

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,...

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

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

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

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

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

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

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