Utente:Andrisano Antonio/Sandbox

Luis Essen

Collegamenti esterni

• http://www.btinternet.com/~time.lord/
• http://www.sciencemuseum.org.uk/onlinestuff/stories/atomic_clocks.aspx
• http://www.wbabin.net/science/rickeressen.pdf
• http://www.cfpf.org.uk/articles/scientists/essen/essen.html
• http://www.wbabin.net/historical/essen2.pdf
• http://www.wbabin.net/historical/essen3.pdf

http://www.treccani.it/enciclopedia/james-thomson_res-a5f27dbc-86d9-11dc-9a1b-0016357eee51/