01:30Learning
Can you see the grey box? Sensory adaptation explained by Kit Yates #sciencedemo #optical #sensory
The Royal Institution
January 21, 2017 was to be the day of the Women's March on Washington. However, it became a global event when marches for women's rights were held in more that 670 cities around the world. Originally published at - http://learningenglish.voanews.com/a/3686764.html
Published 2017-01-22 · Watch on YouTube ↗
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01:30The Royal Institution
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