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What Matter Makes Up Our Known Universe? | Jim Al-Khalili | Spark

The great 19th-century Austrian physicist, Ludwig Boltzmann was one of the most important proponents of the idea that all matter is made of atoms. Today no one doubts this is true but in Boltzmann's day it was a controversial idea and many of his contemporaries disagreed with him. But Boltzmann used brilliant mathematical arguments to show that many aspects of the world we observe, like the behavior of heat, can be explained if one accepts that atoms are real. --- Subscribe to Spark for more amazing science, tech & engineering videos: https://goo.gl/LIrlur 🚀 Join the Spark Channel Membership to get access to perks:    / @sparkdocs   Find us on: Facebook:   / sparkdocs   Instagram:   / spark_channel   Any queries, please contact us at: [email protected] #Spark #Science #phsycis