By Fascinating — Jan 17, 2025 Quantum levitation and quantum locking are a consequence of the Meissner effect and allow superconductor to glide freely over a track of magnets.[📹 fullspectrumtourjp]
A machine to extract water from a swamp made by attaching a belt to the shaft of the tractor's engine [📹 kfotech]…
The granaries of Lindoso, Portugal. Of the approximately 50 "espigueros", the oldest date back to the XVII century. [📹 woorldbook]…