Handheld, yellow lasers do not exist. That is my experience after I last year tried three that were advertised to emit some shade of yellow. None of them looked yellow to me... In this video, I give it another try. Can I fill the yellow gap between red and green with a new laser that should emit a wavelength right between the ones I have tested to...

My yellow-green laser module is not even close to performing as advertised. Perhaps because the power supply is less powerful than advertised too? In this video, I max test the power supply and see if it matters. I also build a pulse-width modulator using an Arduino Uno in an attempt to adjust the laser's power output. Will I succeed? Original...

Does a cheap laser power meter even work? Is it precise enough to be usable? In this video, I test the cheapest power meter I have found for sale and compare it to a much more expensive one. I will use lasers of different colors and optical power outputs. Will the cheap one give the same reading as the expensive one? Let's find out! I bought...

Do you really need a Geiger counter that can detect alpha radiation to detect alpha emitters? Not necessarily, since radioactive decays are way more complex than you might think. In this video, I will take my first steps into the world of gamma spectrometry and show how some alpha and beta emitters can be identified by gamma and x-rays! I will even...

I recently found copper listed on the ingredient list for some candy. Can that really be true and are any metals allowed as a food additive? Join me in a journey into some odd food additives and drinks in this video. Including one that is about to get banned in Europe! My Patreon-page: https://www.patreon.com/Brainiac75 Did you miss one of...

Do you know the difference between a 5 watt laser and a 5 watt LED? Sounds similar in power, but in this video I will demonstrate and explain the crazy difference! Laser engraver Ortur Laser Master 2 Pro donated by Ortur. Affiliate link: https://www.aliexpress.com/item/1005003001677388.html (Note: Sale coming up 11.11.2021). Wow, you actually...