https://stream.echo6.co/videos/watch/d6fececd-4cf2-4a64-a129-51e023d76888 After a recent event in Hong Kong where people attending a fashion event were exposed to dangerous levels of short wave ultra violet energy, I decided to make a video on the different types of UV tubes available on eBay. That includes the dangerous UV-C type that can cause eye and skin damage. One thing I missed in the video was the importance of UV in the making of vitamin D in your body. A reasonable amount of exposure to sunlight is actually desirable. A link to the Hong Kong incident:- https://www.hongkongfp.com/2017/10/26/partygoers-left-burns-light-sensitivity-hypebeast-event-landmark/ It's been pointed out that the main mercury hazard to hatters was the use of mercuric nitrate in a process called carroting. https://en.wikipedia.org/wiki/Felt#Carroting If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:- http://www.bigclive.com/coffee.htm This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty. Fri, 17 Apr 2026 08:44:13 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/d6fececd-4cf2-4a64-a129-51e023d76888 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.