The clever feature that makes cheap heaters safe — and why they’re actually dangerous

From Technology Connections. It’s best to know what you actually need to be worried about. Technology Connextras (the second channel where I put stuff sometimes) https://www.youtube.com/@TechnologyConnextras Technology Connections on Bluesky: https://bsky.app/profile/techconnectify.bsky.social Technology Connections on Mastodon: https://mas.to/@TechConnectify Have you ever noticed that I’ve never done a brand deal? That’s all thanks to people like you! Viewer…

I walked the length of a state (ish)

From Standup Mathematician. Sorry everyone: STEMcon was just cancelled by the organisers. I’m gutted, and sorry we can’t hang out on the ocean. Boundary Stones of the District of Columbia https://boundarystones.org/ Rectangular States and Kinky Borders https://mathtourist.blogspot.com/2007/08/rectangular-states-and-kinky-borders.html?m=1 "Chart showing the original boundary milestones of the District of Columbia." Fred E. Woodward, 1906. Geography and Map…

The V-22 Osprey and why it keeps crashing

From “Real Engineering”. ( YouTube / Nebula ) Get Nebula for 50% off with my link: https://go.nebula.tv/realengineering Watch this video ad free on Nebula: https://nebula.tv/videos/realengineering-the-v22-osprey-and-why-it-keeps-crashing Links to everything I do: https://beacons.ai/brianmcmanus Get your Real Engineering shirts at: https://standard.tv/collections/real-engineering Credits: Producer/Writer/Narrator: Brian McManus Head of Production/Voice of Pilot: Mike Ridolfi Editor: Dylan Hennessy Writer/Research: Josi Gold…

MP3 to Cassette – Mixxed feelings

From Techmoan. The Paulthings Mixxtape® is a modern take on a cassette that plays MP3s…but is it any use? Available from Paulthings.com The Bluetooth adaptor used in this video is this https://amzn.to/4jOoqKb (Amazon Affiliated Link) UPDATE: Apparently the reason the album tracks are randomised is because this is the order the files were written to…

f/0.38 camera lens made with oil immersion microscope objective

From Applied Science. I removed the protective glass from a CMOS image sensor, and used optical immersion oil to couple the bare image sensor to a 40X NA=1.3 microscope objective. f/0.7 Zeiss lens described in amazing detail: http://www.marcocavina.com/omaggio_a_kubrick.htm Fake f/0.33 Zeiss lens: https://petapixel.com/2013/08/06/carl-zeiss-super-q-gigantar-40mm-f0-33-the-fastest-lens-ever-made/ Camera and sensor that I used: https://www.ids-imaging.us/store_us/products/cameras/ui-5584le-rev-1-2.html https://www.onsemi.com/products/sensors/image-sensors/mt9p006?pdf= Conversion from f/# to…