or log in
In rock-paper-scissors, the least popular choice of players is paper. But is it really the...
Direct action pumps and suction pumps are among the simplest water pumps.
In this experiment we prove that it is possible to cut a bottle with just a string.
Learn how to pierce a balloon without popping it.
Surface tension is the property of a liquid that allows it to obtain the smallest surface...
Is it possible to turn pure water into a soft drink in a few seconds?
It is a well-known phenomenon that the sound of an approaching sound source is higher...
Observe what happens when making sounds with shorter and shorter pieces of the same straw.