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The Sound of the Bomb (1953) Most films of nuclear explosions are dubbed.

The Sound of the Bomb (1953)

If they do contain an actual audio recording of the test blast itself (something I’m often suspicious of — I suspect many were filmed silently and have a stock blast sound effect), it’s almost always shifted in time so that the explosion and the sound of the blast wave are simultaneous. This is, of course, quite false: the speed of light is much faster than the speed of sound, and the cameras are kept a very healthy distance from the test itself, so in reality the blast wave comes half a minute or so after the explosion.

Basic physics that even a non-technical guy like me can understand. It’s rare to find footage where the sound has not been monkeyed with in post-processing.

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