A Conversation for Isaac Newton: Overview
And did you know...
Baron Grim Started conversation Jan 2, 2013
That Isaac Newton invented the cat flap. It was during his studies of light and optics at Cambridge. He turned his room into a large camera obscura (blacking out the room except for a small aperture). However, he could not deny his beloved cat entrance to the room when it would scratch at his door. Opening the door ruined his "night" vision so, he invented a cat flap so that the cat could enter and leave the room as it pleased without letting in enough light to disturb his studies.
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