That YouTube channel is really great. Their older videos have a lot of lasers but they have expanded into many other subjects. I found them when searching about

That YouTube channel is really great. Their older videos have a lot of lasers but they have expanded into many other subjects. I found them when searching about magnetohydrodynamics on YT. Highly recommended. I generally prefer consuming text but never have an issue sitting through their 30 minute long videos. Recently they had a video about making very high performance thermal paste and were selling it, but three weeks later it still hasn't shipped and my email a week ago is unanswered. A shame, because their videos are still really great - I wanted to support them financially because the stuff they do is not cheap. But I guess selling a higher quality product for cheaper than the competitors isn't really a great monetization strategy. Meanwhile I had to settle for worse product at a higher price for my high power led project :(