How cameras can record nuclear explosions?

Question

I was watching some videos on youtube of nuclear explosions, and when that wave (i don't know of what it is) comes, it destroys everything but the camera stands still and keeps recording. How does it keep recording?

Here's a link:

http://youtube.com/watch?v=8XVaOVydD4U&feature=related

Answer 1

First,. the bomb was an extremely small warhead, (280mm shell) either the M9, or the M19, 15-20kt yield, used to validate tactical nuclear artillery in the mid-50's. The camera that filmed the explosion face-on was well outside the areas most affected by the thermal flash and the shockwave. The second set of images you see are of thermal flash effects that occur well outside the fireball. Various military and civilian structures were placed, and specially constructed camera towers were made to resist the shockwave. After that, you see the shockwave tipping and tumbling these objects. The cameras that recorded these images were well-shielded from the heat, and were strongly supported, and were far-enough away from the detonation for them to survive with the level of protection they were given. You will also note that they faced AWAY from the initial Shockwave or perpendicular (90 degrees) to the shockwave.

Answer 2

The cameras, were a long way from the initial explosion, and were buried in a bunker, they were positioned to look out a window and the lens was protected by extremely thick Armoured glass-plate.

Answer 3

they cover it in cockroaches cause they can survive nuclear explosion