The cinema at Workington has a small section called the Hawking Room. The lit-up sign made me think of Hawking Radiation. I had always understood this to be due to pairs of virtual particles being created near the event horizon and then one falling into the black hole before they annihilate again - the spared particle being the radiation. It turns out it's not quite that but that my idea is an approximation. It's an idea called the Unruh Effect that means that such particles appear to an accelerating observer.
