Our brain manages reality by interpreting what our eyes see. Sometimes, it tries to make sense where there isn't really any, creating an apparent movement. This phenomenon...
Refraction simply refers to the bending of a light ray when it passes from one transparent medium to another (for example: from air to water, or from...
Our planet is not a perfect sphere: it is more like a slightly squashed ball at the poles. This phenomenon, called flattening, comes from the...
Light usually moves in the form of waves that vibrate in all directions. When it bounces off a surface like a wet road or a...
It is thanks to Earth's gravity that satellites orbit around it instead of flying straight off into space. This force acts like a kind of...
The shape of hair depends a lot on the internal structure of the hair, particularly the shape of the hair follicle. Imagine that your hair...
Textile fibers are a kind of very fine threads made up of long molecular chains. Cotton, wool, or synthetic, they all have a certain natural...
Neanderthals likely chose flowers thoughtfully. For example, some archaeological discoveries show the presence of plants with medicinal or fragrant properties in graves. This suggests that...
Low sounds have a longer wavelength, meaning a greater distance between two successive peaks of the sound wave. In contrast, high sounds have shorter wavelengths. Since long...
The radars used by the police exploit the Doppler-Fizeau effect, a rather clever physical phenomenon: when a radar wave bounces off a moving car, its...
