The free pdf volumes of the 2021 physics textbook edition – the paper volumes are a pretty present by the way – tell about the race to make images floating in mid-air with lasers, tell about the sound of falling batteries, tell about how to measure images on the eye's retina in living humans, tell about the sounds deep inside the Earth, show the possibilities of very long baseline interferometry f
![Motion Mountain - The Adventure of Physics](https://cdn-ak-scissors.b.st-hatena.com/image/square/6c0a1c1b186e8dafd519dd822b74add4327ab39f/height=288;version=1;width=512/https%3A%2F%2Fwww.motionmountain.net%2FIMAGES%2Fminicover.jpg)