Let’s relax and sleep with more about Einstein’s theories of relativity, how geometry gets messy on a sphere, the validity of measuring with eels, and a bit about Pythagoras, who feared beans. Who knew?   Help us stay ad-free and 100% listener supported! Patreon: https://www.patreon.com/boringbookspod Buy Me a Coffee: https://www.buymeacoffee.com/d5kcMsW   Read “The ABC of Relativity” at Project Gutenberg: https://www.gutenberg.org/ebooks/67104   Music: "Boring Books for Bedtime,” by Lee Rosevere, licensed under CC BY, https://leerosevere.bandcamp.com   If you'd like to suggest a copyright-free reading for soft-spoken relaxation to help you overcome insomnia, anxiety and other sleep issues, connect on our website, http://www.boringbookspod.com.