A flame conducts an electric current.

Quite an interesting and addictive experiment in slow-mo mode.

NASA has published a sonification of the black hole at the center of the Perseus galaxy cluster.

If you add a teaspoon of salt to a glass of water, the volume of water will soon decrease

The solvent (water) molecules become more ordered around the dissolved ions and take up less space.

Visualization of ultrasonic waves. Not gravitational.

Microwave plasma.

The decomposition of just 0.5 grams of uranium releases energy comparable to what can be achieved by burning 150 liters of oil.

Buildings resist earthquakes

Seismically insulated foundation buildings rest on several elastic rubber cylinders. They act like car shock absorbers, turning sharp shocks into a slight vibration.

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What happens when elasticity and Archimedes' force are combined.

Partial vacuum in the bottle

The reciprocating motion is transformed into the motion of 3 shafts

Here's what happens if you cover yourself with hydrophobic aerogel dust before swimming

The more sharp objects, the less chance that the ball will burst

The ball is no longer placed on one button, but on many. Yogis use this method to sleep on nails and walk on glass.

Paper airplane and aerodynamics.

A blogger assembled a "Chronos ring" shooting at 330,000 frames per second. With this monster, he filmed oxy-acetylene explosions.

Supercooled water

Water is free of impurities and has cooled below freezing point. For ice to form, a center of crystallization must be created.

Tricks using surface tension.

Sodalite Mineral

When exposed to sunlight, the rock crystals absorb it and change color.

An interesting distinction: how CD players behave in zero gravity when turned on and off

Waterjet cutting is the best way to learn about someone's inner world