When the bow is drawn, the arrow has potential energy; for a flying arrow, the energy is converted to kinetic energy.

Homemade flamethrowers from fire extinguishers.

Dead Loop Race at the X Games Extreme Sports Festival in Los Angeles

Magnetic Slime.

Vantablack is the blackest known substance. It absorbs 99.965% of light.

A stunning prototype engine running on liquid nitrogen.

Slime in a vacuum.

Spherical 3D model of the observable universe

This represents about 92,200,000,000^3 light-years of volume.

Tabletop internal combustion engine.

Nifty tricks with dice, with knowledge of the law of physics.

And here's what happens if you pour water into hot oil.

2D model of heliocentrism and geocentrism

This model shows how the planets would rotate if the Earth were at the center of the system.

A giant bomb in the pool.

Dry ice bubbles.

"Lava" and coconut.

Titanium hydride - the star of fireworks

Used in pyrotechnics to create bright white sparks.

Cutting glass under water.

Scissors make a micro-crack, capillary effect completes the process, breaking off pieces of glass. The splitting occurs due to the wedging effect of the capillary water.

Checking the stability of the building model.

Fireworks of the Day: An old 760-meter bridge considered to be unsafe has been blown up in China.

When you're a tech genius and a little bit of a musician.

A fun and surprising interactive installation "Future Self".