Did I Buy Fake Uranium and Thorium?!? // Challenging the RC 110 donated by RadiaCode

SHOW LASER Beam On LaserDisc?!? // LaserCube 7.5W Ultra MK2 donated by Wicked Lasers

DUMB DESIGNS | Laser Safety Issues Never Mentioned

The Curse of 9V Batteries | Internal resistance measured with multimeter

MAGNETIC SPRING LAUNCHER | Permanent electromagnets are amazing and fun!

Can you spot RADIOACTIVE glass without a Geiger counter?

NO ELECTRICITY Electromagnet?!? The Weird and Wonderful Permanent Electromagnet

Infrared eBay LASER with weird 10-in-1 beam? Cheap and powerful though!

Ultraviolet LASER so intense it is VISIBLE?!? // Valkyrie Lasers donated by Tinker Lasers

Cake Mold as LASER Diffuser?!? | DIY Ulbricht Sphere Prototyping and Testing

RADIATORS ARE MAGNETS? Surprising Effect and Direction of the Earth's Magnetic Field

TOO BRIGHT Car Headlamps!?! | Laser LEP vs. LED vs. Halogen | Stronger than Sunlight

LASER Headlamp for Cars?!? How strong is its laser? | Find out how it works and how to power it up

Monster magnet meets microwave magnetron...

LASER Hair Blaster | How strong is this "Class 1" laser?!?

Exotic Elements vs. Magnet | Rare Earth Metals | 7/7

How bad is 91W gear for an expensive 135W lamp? Testing SOX 135W on 91W, 135W and 135/180W ballast

FAULTY Flicker-Flame Light Bulb? Amazing in slow-motion!

THIS LAMP SOXs! "Yellow" tech of bright metal vapor lamp. Beats modern LEDs in brightness per watt?

Power of Plasma Balls Visualized | Don't wear a ring... Jumping won't help!

TRUE YELLOW LASER or not? 25+ years wait over? // Valkyrie 573 donated by Tinker Lasers

LASER underpowered by its power supply? | First TTL/PWM Arduino attempt

MAGNETIC PAINT | Cheaper and easier than Ferrofluid and Ferripaste?

Mystery RADIOACTIVE Source | Can we identify it?

Upgrading Fiber Optic Lamps to LASER Brightness!

Monster magnet meets monitors...

YELLOW LASERS?!? Finally - after 25+ years of collecting!

Messing Up the Fluorescence of Tonic Water - in several ways...

GLOW-IN-THE-DARK: Can you change the color?

Desert Sun Lamps! | My least healthy lights yet?