Dr Brian Cox tries to explain a Gravity Wave

Brain, you got a PhD. you can do better than that!

someone needs to buy that guy a slinky!! "here... take this, and go figure!" lol.

Dear Brian, All you need to tell him is that when a crowd does "the wave", the people in the crowd aren't actually walking in the direction that the wave moves; they're simply moving up and down in a wave pattern. That's what a wave is. Also, to explain the effect of a gravity wave on the producer's sandwich: the sandwich sticks to the plate. The plate sticks to the table, and the table sticks to the floor which sticks to Earth. Ta-daa.

this producer is a complete idiot!! he dun understand wat a wave is simply because he is stupid!

Ah but at least he can spell

I agree with "jonnyhifi",, and to analyse the dynamics of this vidoe: it is spliced together, the interviewer says he is talking about surf waves, then says he doesnt want to know what brian is saying,, and he is right, it is obvious, water, sound, particles... a wave is a rush or calm area of the topic in question. but the interviewer keeps changing his topic. Watch from 2:42 on, at 3:19 the guy says "I dont understand",...THATS WHY HE IS A REPORTER

Would it be easier to think of the space-time fabric being, say, a flag attached to a pole and the wind being gravity? Whereas the flag is not moving forward just being stationary, attached to the pole yet manipulated by the wind (gravity) or is this not even close to what they're discussing?

the director is not an idiot. he was just 'training' brian to get the goods needed for the film.

we did include this scene in cut down form - in that brian was indeed struggling to find the right words to explain the process in a simple way.

A moving sphere which expands and contracts would be one way to visualise a spacetime wave.