12:24

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

12:31

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

13:13

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

15:15

MAGNETIC PAINT | Cheaper and easier than Ferrofluid and Ferripaste?

14:26

Mystery RADIOACTIVE Source | Can we identify it?

14:01

Upgrading Fiber Optic Lamps to LASER Brightness!

14:11

Monster magnet meets monitors...

14:59

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

09:43

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

10:17

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

09:30

Desert Sun Lamps! | My least healthy lights yet?

10:37

Are cheap UV detection cards any good?

11:33

Monster magnet meets aluminum can...

12:59

Smartphones measure MAGNETISM in 3D?!? | Gaussmeter in your pocket?

12:44

New LASER Power Record on my LPM?!? | LaserCube Ultra 750K Subs Special

09:58

Hidden Hazards of Halogen Lamps

12:12

Smartphone vs. Real Meters for Sound and Light Measurement?

12:30

Monster magnet meets subwoofer...

11:29

How [NOT] to MAX test a power supply!

09:48

Bananas can detect invisible light?!?

09:03

Handheld DNA eraser?!?

09:03

Invisible light will make 'Gold of the North' visible?

11:52

New King of Magnetic Power? | Electromagnet vs. Neodymium Magnet

10:36

PRO vs. DIY | Is my laser beam dump any good?

09:27

Ingenious hybrid lamp sold in a MINDLESS way...

10:20

Laser COLOR limits data capacity?!?

13:38

MAGNET MYSTERY | Help me explain it!

11:44

How bad is this cheap laser power meter? | HWLPM Mini 10W vs. Sanwu Tracer 20W

10:02

Radioactive Mushrooms vs. Affordable Gamma Spectrometer | This beats ALL Geiger counters!

10:50

Metal in Food and Drinks | Ban incoming!

11:56

Crazy difference between 5W LASER and 5W LED!

10:40

Mystery of the Demagnetizer | What's inside? How does it work?

09:59

COLA is PERFECT for lowering a laser's power!?!

09:54

Build in 3D with LIGHT! | Science of Anycubic Photon Mono X

09:35

Are lasers safer with rechargeable batteries?

11:27

Bad Beams? | How divergent are lasers?

10:21

SD Card vs. Radioactivity | Data Loss?

10:06

Measuring Monster Magnet's Grade...

09:01

Measure Magnet Grade with Kitchen Scale? | Density = Grade?

11:22

Even STRONGER Garden Laser?!? | Laser classes explained

11:44

Don't use strong lasers without this - easy to make!

10:27

You drink this? | Fluorescent Food

12:09

Monster magnet meets plasma ball...

11:44

What makes green lasers the BEST lasers?

09:01

Don't use a green laser in the cold!

11:08

How radioactive are bananas and other radioactive foods?

11:47

Can I measure the grade of a magnet?

14:22

Strongest LASERs in my collection | Power and wavelength measured

11:51

How faster is an induction cooker really? | Magnetic heating and COOLING

13:38

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

12:46

LaserCube 2.0 | They DOUBLED the power?

10:20

Messing Up Magnetic Makeup...

13:38

DECORATION LASERS | Stronger than you think...

10:07

MAGNETIC HOURGLASS | Time changed by magnet?

11:05

Monster magnet meets monster laser...

10:30

Glass can be magnetic?!?!

09:27

Metals in glass are AWESOME!

10:25

What's inside the World's smallest laser show?

09:22

Weird battery change in Geiger counter

10:01

Mapping monster magnets magnetic field