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.