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Mircea Pteancu

26 Sep 2017 22:47



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La acest link puteti descarca de pe ADS articolul  ''Evolution of the Foucault-Scretan Reflecting Telescope'' de William Tobins  .
Articolul a fost publicat in ''Journal of Astronomical History and Heritage'' 19/2016 , documentul este in  format PDF si are 79 de pagini.

http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?db_key=AST&bibcode=2016JAHH...19..106T&letter=.&classic=YES&defaultprint=YES&whole_paper=YES&page=106&epage=106&send=Send+PDF&filetype=.pdf

Are cineva informatii despre telescoape Secretan din  Romania ?

Mircea