Quartz is a special material because it is piezoelectric. What does that mean? Basically, when you apply an electric current to it, it slightly deforms, and conversely:...
The principle is based on a set of satellites orbiting the Earth that continuously send radio signals. These signals primarily carry two pieces of information: the precise...
Each screen displays images at a certain frequency, meaning the number of times per second it refreshes (usually between 50 and 144 times per second). When you...
RAM is an electronic memory made up of semiconductor chips. This means: no mechanical parts, so nothing moves physically; everything happens in an electrical form. In contrast,...
A traditional hard drive saves your data using magnetism. It contains several circular platters with a surface coated with a very thin magnetic layer. On...
Our fingerprints are those small ridges and valleys that form unique patterns at the tips of our fingers. They appear as early as the formation...
Telephone cables were twisted in the old installations to reduce electromagnetic interference. This technique involves intertwining the conductive wires into twisted pairs. When these pairs...
A mechanical watch relies on tiny and precise parts such as the balance wheel, the mainspring, the escapement, and the gear train. The mainspring accumulates...
Optical fibers are like ultra-thin pipes that use light to send digital data very quickly over long distances. Unlike traditional copper cables that transmit electricity, the light...
