The ice that accumulates on the walls of the freezer mainly comes from the entry of humid air when we open the door: in contact with very cold walls, the water vapor can transform directly into the solid state. Reviews like the one by Liu and colleagues in 2024 highlight …
How headphones work: from the magnet to the membrane, this is how the speaker transforms the signal into music
Music, podcasts, phone calls and videos have one thing in common: to be listened to on headphones they must be transformed into sound waves. The surprising detail is that no sound travels inside the headphones. In fact, what travels along the cable or wireless connection are electrical signals that must …
How to find the only 200 gram box of apples with just one weighing: the solution to the puzzle
The riddle of the 10 apple crates. We find ourselves in this situation: we are farmers and we have 10 apple boxes ready to be loaded onto a truck headed to the market. 9 of these boxes contain apples that weigh 150 grams one o’clock, while 1 sola contains apples …
