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The effects of flowing waterbodies in the mountains

The greater the discharge and speed of the water, the stronger its surface-shaping force.

The history of lighting

Nowadays it is perfectly natural to turn on the lights. But it has not always been that way.

Putting a candle out with sound waves

How can sound waves be detected in the air?

Levitating magnets

This simple experiment demonstrates the phenomenon of magnetic levitation.

Hand-powered paper turbine

Let’s rotate a paper wheel with the heat of our hands.

The pupillary light reflex

In strong light the pupil contracts, while in low light it dilates.

The formation of the Andes

The Andes were formed by the collision of two tectonic plates, one oceanic and one continental.

The Baikal fault line

The deepest lake in Earth was formed in a rift valley created by the Baikal Rift Zone.

El Niño

The El Niño phenomenon has a great effect on the Earth's climate.

Snowflake

Fold the paper here and there, chip one or two with the scissors. This is all you need to create...

Cuboid

A cuboid is a polyhedron with six rectangular faces.

Nets of a cuboid

This animation demonstrates the different nets of a cuboid and includes a game.

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