Einstein, Poincaré & modernity: A conversation

Daedalus

Volumn 132, Issue 2, 2003, Pages 41-45

  Galison, Peter L ^b   Graham Burnett, D ^a  

^a PRINCETON UNIVERSITY   (United States)

^b NONE

Author keywords

[No Author keywords available]

Indexed keywords

EID: 77949967691     PISSN: 00115266     EISSN: 15486192     Source Type: Journal    
DOI: None     Document Type: Article

References (1)

1. The earth rotates once on its axis each day, or 360 degrees every 24 hours, or 15 degrees every hour. Longitude is measured with respect to some arbitrary zero line-say, the meridian of Paris. So if we know that the sun is directly over our heads (it is noon where we are) and we get a telegraph message from Paris saying it was noon there an hour before, we know we are 15 degrees west of Paris.