Animator Jared Owen made an excellent animated video that clearly shows how a combination lock works.
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8:31 am Thu
Sep 5, 2019
This animated video shows how a combination padlock works
What does a fan do in a vacuum chamber?
In this video of The Action Lab, the Action Man puts a small fan into a vacuum chamber and pours a bunch of little styrofoam beads in it. At atmospheric pressure the beads fly all over the place. As he reduces the pressure inside a vacuum chamber, the beads slow down and eventually stop moving. […]
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Big Clive examines a fake UV disinfection lamp sold on eBay
YouTuber Big Clive bought a “UV disinfection lamp” on eBay. He tested it first by turning it on and aiming it at the back of his hand for a few seconds and then sniffing his hand for “skin damage.” There was no odor, which was a good sign that it’s not really producing UV-C radiation, […]
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Lockdown math: trigonometry fundamentals
YouTuber 3Blue1Brown has started a video series called “lockdown math.” In his latest episode he goes over the fundamentals of trigonometry in a way that is accessible and enjoyable.
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Get over 140 hours of online piano lessons for less than $40
Maybe you had a piano teacher as a kid that drove you off the instrument forever. Or maybe you always wished for some serious training, but never found the time. Whether you have dreams of tossing off a Beethoven or Chopin piece at the drop of a hat or you have visions of being the […]
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Save over 90% on a 2-year subscription to Iconscout's unlimited icons plan
When you see that curved arrow on the side of a cardboard box, you instantly know that box came from Amazon. The unfurled rainbow feathers of a peacock immediately scream NBC. And a partially eaten piece of fruit in the profile is a world-recognized symbol of tech titan Apple. Icons are powerful symbols, condensing volumes […]
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Get the wireless recharging power battery that looks just like a Walkman
Call it retro. Call it a throwback. Even call it kitsch. But the 80s are still a singular time in pop culture history. From Ghostbusters and Back to the Future to your neighborhood arcade and the Atari 2600, artifacts of that seminal decade still resonate, evoking audible excitement and sighs of pleasant yesteryear remembrance. But […]
