How to see invisible UV Light – Easy At-Home Science

Hi, I’m Tech Adams Today, I wanted to show you this. To the naked eye and to the camera, this piece of glass appears clear, but it’s not. Oohh, see how clear. In order to show that it’s not clear, I need three things. A black piece of card, a yellow highlighter, and an ultraviolet […]

Tech Tip: Adjusting VIKING™ Helmets for Bifocals

Hello, I’m Dennis Klingman We’re at the lincoln electric customer training lab And we’re going to go over a topic today that’s fairly current uh… the topic is helmet adjustment for people with eye correction lenses uh… i happen to have bifocals they’re a blended bifocal uh… this works with regular bifocals but if you […]