From YT: How does a transistor work? Our lives depend on this device. When I mentioned to people that I was doing a video on transistors, they would say "as in a transistor radio?" Yes! That's exactly... continue reading
posted by mxxcon 1 decade 9 months 2 weeks ago • 55 views • 6:00Videos (44) | Sift Talk (0) | Blogs (0) | Comments (1000) |
YouTube Description: A quick look at the history of how your wardrobe was invented. Including underwear, jeans, socks, sunglasses, and more.
posted by PlayhousePals 1 decade 10 months 2 weeks ago • 229 views • 1:05From dynamite to Penicillin, these are the top 25 accidental inventions that changed the world.
posted by Mordhaus 1 decade 11 months 1 week ago • 813 views • 8:56Happy October, Month of the Hexaflexagon! Oct. 21st is the annual Celebration of Mind, in honor of Martin Gardner. Maybe you'd like to host or attend a flexagon party sometime around then, or learn about... continue reading
posted by eric3579 1 decade 1 year 6 months 4 weeks ago • 2,201 views • 4:45