Eddington number

English Etymology en Arthur Eddington = English astrophysicist 1882 1944. Proper noun en astrophysics The number of protons in the observable universe; currently estimated at approximately 1080. en 2022 David Darling; Agnijo Banerjee The Biggest Number in the World: A Journey to the Edge of Mathematics Simon and Schuster 9780861543069 https://books.google.com/books?id=8_xIEAAAQBAJ&pg=PT6&dq=%22Eddington+number%22&hl=&cd=1&source=gbs_api#v=onepage&q&f=false This is the infamous Eddington number, which he wrote out in full in his 1923 book and repeated again in a public lecture he gave in 1938 at Trinity College, Cambridge. en cycling The maximum number E such that the cyclist has cycled at least E miles on at least E days. en 2021 w:Dashun Wang; w:Albert-László Barabási The Science of Science Cambridge University Press 9781108492669 20 https://books.google.com/books?id=OTQTEAAAQBAJ&pg=PA20&dq=%22Eddington+number%22+cycling&hl=&cd=1&source=gbs_api#v=onepage&q=%22Eddington%20number%22%20cycling&f=false Hence an Eddington number of 70 would mean that the person in question has cycled at least 70 miles a day on 70 occasions. Further reading