In rock-paper-scissors, the least popular choice of players is paper. But is it really the weakest of the three?

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Beverage machine - Part 2

We can further develop the machine we presented in the previous video, so it can dispense...

Pitch and frequency, Part II

Experience the relationship between pitch and frequency through measurements.

Putting a candle out with carbon dioxide

In this experiment we produce carbon dioxide with vinegar and baking powder.

Exceeding the speed of sound

What is the speed of sound? What happens when an object exceeds the speed of sound?

Seconds pendulum

How can this pendulum accurately measure time in seconds?

Archimedes' seesaw

In this experiment, we use buoyancy to study the balance of two glasses of water.

Properties of matter: mass, volume and density

In certain cases, liquids do not mix together, and form layers instead. See what happens when we...

String saw

In this experiment we prove that it is possible to cut a bottle with just a string.

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