It was the switching on of the Wigton Christmas lights tonight. Here's our MP Rory Stewart counting down to the moment that the lights came on.
He was followed by the Luminites. I thought they were great on BGT and they were great again this evening. They were very nice about Wigton. And RESPECT to everyone who put on a great event that brought so many people out.
Here comes the Physics: Light is an odd thing. I'll tell you that it is an electromagnetic wave. It consists of a moving electric field wave with a moving magnetic field wave at 90 degrees. Each field generates the other so light can be self-sustaining through a vacuum. It does not need particles. However the philosopher Bertrand Russell made a good point. He said that you could take a person who was born blind and put them onto a boat. They could feel the waves moving the boat up and down and you could tell them that light is like that: light is a wave. But he pointed out that they would have no idea what light is really. We don't define it; we just experience it. Physics take note.
