What Happens When You Reflect a Laser Back Into Itself?

Is It Possible To Completely Fill a Klein Bottle?

Can a Hydraulic Ram Pump Make a Perpetual Motion Loop?

Making Cold Light From Crystals

Get Your MEL science kits here: https://melscience.com/sBG6/ Promo code: ACTIONLAB Shop the Action Lab Science Gear here: ...

I Painted My Entire Room With Musou Black—The World's Blackest Paint

A Permanent Magnet That Turns On and Off

Knocking Electrons With Light—The Photoelectric Effect

Warning: DO NOT TRY—Seeing How Close I Can Get To a Drop of Neutrons