A large firework display is set off to see if the noise could affect the weather and make it rain.
Item title reads - Can Noise Make Rain? Terrific bombardment of the sky may have caused the slight shower London enjoyed - in any case, huge crowds appreciated magnificent firework display. London.
M/S of a sign saying "Daily Express Rain Making Experiments". Various shots of lots of rocket fireworks being set off into the sky during the day. People watch them in the background.