The ABC of Relativity, by Bertrand Russell, Part 5

Let's journey to sleep with science as we learn more about Einstein's radical new theory of relativity, why geometry is physics when it comes to space-time, and how light spectrums reveal directions of travel. Is it difficult to understand? Eh, it's all relative.   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" by Bertrand Russell 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, https://www.boringbookspod.com.