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170

TIL about the first wearable computer

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W7jB4 TIL: 75 Years Later, Purple Hearts Made for an Invasion of Japan are Still Being Awarded
VBJvD TIL After leaving NASA in 1971, Neil Armstrong named his farm for a valley described in "The Lord of the Rings" and chose an email address with a Tolkien theme. There is a theory he based his One Small Step quote on "The Hobbit"
0wnv1 TIL Most humans see about a million colors due to three retinal cones: red, green, and blue. Some humans have a fourth cone for orange light and can see 100 million variations in color.
vAv8 TIL During the filming of the climactic flood scene in Noah’s Ark (1928), the great volume of water used was so overwhelming (600,000 gallons) that three extras drowned, one was so badly injured that his leg needed to be amputated, and a number suffered broken limbs and other serious injuries
BrbXL TIL: That a dead fish, if placed in the wake of an object in a stream of water, can "swim" upstream.