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Don't use a green laser in the cold!

Does a green laser pointer stop working when it is cold? Or does it turn into an invisible laser? That is nice to know for safety reasons if you are using a green laser pointer to point out stars on a frost-clear night. And what about those decorations lasers for your garden? Are they safe at a freezing winter night? Time to find out in this video!...

How radioactive are bananas and other radioactive foods?

It is time to take a closer look at some foods that are often said to be radioactive: bananas and brazil nuts. How active are they in reality? And why would they even be radioactive in the first place? Can I find something way more active and still edible in a grocery store? Let's find out! Brazil nut tree image by Juan Carlos Torrico from Pixabay....

Can I measure the grade of a magnet?

Is it possible to measure the grade of a magnet? Even if you 'only' have a gaussmeter? It is interesting to know, since neodymium magnets are expensive and it would be nice to know, if you get what you pay for. In this video I attempt to confirm the grade on some magnets before trying to determine the grade of a questionable, cheap N52 magnet. Let's...

Strongest LASERs in my collection | Power and wavelength measured

It is time to test the strongest lasers in my collection, now that I have both a laser power meter and spectrometer. I can test both power and wavelength of the strongest laser for each laser color I own. I have 11 colors in my laser rainbow, so hang on for an epic journey into the lasers in my collection. Many of which I haven't shown in a video before!...

Magnetic heating and COOLING | Induction vs. Resistive and Magnetocaloric Effect

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. Magnets are mostly known for their magnetic force, which is very useful in itself. But magnetism is also useful for many other things. In this video I give...

SD Card vs. Monster Magnet and Induction Cooker (2000W AC electromagnet)

Thanks to Brilliant for supporting my channel with the sponsorship. Use this link https://www.brilliant.org/Brainiac75">https://www.brilliant.org/Brainiac75 for 20% off on the premium subscription and help me out at the same time. Are SD cards really magnet proof? Even when thoroughly tested near some of the strongest permanent magnets available?...

LaserCube 2.0 | They DOUBLED the power?

Thanks to World of Warships for sponsoring the video. Play for free here: http://go.thoughtleaders.io/1686420200229">http://go.thoughtleaders.io/1686420200229 New players on the portal can use the code BATTLESTATIONS2020 to get 250 Doubloons, 3 days premium time, 1 million Credits, USS Charleston (premium ship) and more. I was impressed by how...

Messing Up Magnetic Makeup...

The first 500 people who click the link will get 2 free months of Skillshare Premium: https://skl.sh/brainiac75">https://skl.sh/brainiac75 I often call my channel a journey into the fun and beauty of amateur science, so why not have fun with a special beauty product: magnetically activated nail polish! Unfortunately I have no experience with nail...

DECORATION LASERS | Stronger than you think...

How powerful are the decoration lasers you may have seen sitting in gardens and projecting red and green dots onto houses around Christmas? What is inside them and how do they work? In this video I open four of these lasers and measure them on a laser power meter. I was surprised by some of the built-in features and their power output! Related videos:...

MAGNETIC HOURGLASS | Time changed by magnet?

Magnetic sand in an hourglass is a nice touch. But what happens if I use a way too large magnet near it? Can I change time? Let's find out! One of the 150x50 mm disc magnets donated by www.magnetportal.de/ The F71 Teslameter donated by Lake Shore Cryotronics:https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx">https://www.lakeshore.com/products/Gaussmeters/F71-F41-teslameters/Pages/Overview.aspx...

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