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The photo below has been taken with a telescope (that has focal distance = 18.56m).
Knowing distance from Earth to the Moon is 384444 km, find out Moon's diameter.

 
enunciado_diametro_focal_de_un_telescopio_ingles.txt · Última modificación: 24/04/2017 13:13 (editor externo)
HOU Internacial. Galieleo Teacher Training Program. Universidad complutense de Madrid. DokuWiki IYA 2009