A letter written by Albert Einstein that includes the world's most famous equation is being auctioned with an estimated worth of $400,000.
원문출처 : https://www.cnn.com/2021/05/13/us/albert-einstein-letter-with-e-equals-mc2-up-for-auction-trnd/index.html
원문출처 : https://www.cnn.com/2021/05/13/us/albert-einstein-letter-with-e-equals-mc2-up-for-auction-trnd/index.html