Feather Falling in a Vacuum
An apple and a feather are released at the same time. The feather that is falling in a vacuum chamber falls at the same rate as the apple in the air. The feather and the apple have metal pins in them that are attracted to the strong magnets in the release mechanism that can be seen at the top of the image. The flash is triggered at 1/20th of a second interval. The apple and feather do accelerate at the same rate..The vacuum pressure was 30 microns.
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