physics

Physics is everywhere. From the movement of every object to the only F on your high school report card. So shake off that abject failure and find the humor in such a complex and unseen force that affects our lives so significantly. 

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French Scientist Used Photography To Explain Why Cats Always Land On their Feet

The phenomenon of the "cat-turn" by which a cat always lands on its feet has been an enigma since the 19th century. 

The French scientist/inventor, Étienne-Jules Marey, who was interested in the motion of objects, decided to use a special technique in photography, called chromatography, to solve the enigma.

He used an anonymous white French cat and dropped it from an unspecified height in the Bois de Boulogne, filming its descent at 12 frames per second. The photos show how a cat falling, even with no rotational movement at the beginning of the decline, would gain momentum while in free fall. He even published these photos, along with his research, in a volume of Comptes Rendus in 1894.

Ultimately, this brave and likely unsuspecting scientist didn't know his little experiment actually contributed to the space exploration, even though  it took over 50 years for NASA's researchers, T.R. Kane and M.P. Scher, to publish their findings in a paper titled "A Dynamical Explanation of the Falling Cat Phenomenon."


French Scientist Used Photography To Explain Why Cat Always Land On Its Feet | FIG. 2.-End view failing cat series runs right left. black and white series of pics of the progress of a cat turning during a fall
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Physicist Looks At Nature With X-Ray Eyes And Provides Fascinating Photos Of Animals

Arie van 't Riet is a physicist specializing in low energy X-rays. A few years ago he started to use this experience in X-ray photography or in other words, looking with X-ray eyes to nature. Using his X-Ray camera, he documents animals in their natural surrounding - a butterfly nearby a flower, a fish in the ocean, a mouse in the field, a bird in a tree and so on. Take a look at some of his amazing photos on his Instagram page. 

x-ray vision physics animal photos animals - 9068549
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