When water flows down a sink, it often takes a swirling trajectory instead of falling straight down. This whirlpool is mainly due to the conservation...
When light passes from a transparent medium like air to another medium with a different density, such as water or glass, it suddenly changes direction: this is...
The curved shape distributes mechanical tension evenly along the stick. When the hairs are tightened, the curvature helps prevent too much tension from concentrating at...
When you rub two objects together (like a balloon and your hair), electrical charges transfer from one to the other. The object that loses electrons...
The fan creates wind through a simple physical phenomenon: it moves the surrounding air. Its rotating blades exert a mechanical thrust on the air molecules...
The white light coming from the sun or a lamp looks like a solid color at first glance, but it is actually made up of...
The way a material conducts electricity starts directly at the level of atoms. Each atom has electrons, those tiny negative particles that orbit around the...
When you heat a tennis ball, the air inside stirs, as the air molecules move faster due to the heat. As a result, they hit...
A tennis ball is primarily composed of a rubber shell filled with pressurized air, covered with a felt often made from a blend of wool...
A magnet is an object whose atoms are aligned in a somewhat special way, creating a magnetic field all around it. Imagine this as a...
