Comments on Éclipse

Karl (2003-12-02T11:33:56Z)

I've said

"A good list of eclipse cycles (by Robert Van Gent) is found at
http://www.phys.uu.nl/~vgent/calendar/eclipsecycles.htm
It includes a cycle named after me of 391 solar years = 403 lunar years of twelve lunations = 824 eclipse seasons. This cycle divides into four quarters."

On that web page, that cycle is no longer named after me but is known as the Grattan-Guinness cycle named after someone who discovered it over a 100 years before me.

The most well-known eclipse cycles are
223 lunations of 38 eclipse seasons called the Saros and
358 lunations of 61 eclipse seasons called the Inex.
Also the less accurate is the
235 lunations of 40 eclipse seasons and 19 years.

jko (2003-11-13T22:06:53Z)

Une petite image pour Izis entre autre http://www.futura-sciences.com/img/EC5.jpg

Karl (2003-11-12T14:05:50Z)

I didn't see the eclipse in England because it was cloudy. I remember seeing a partially eclipse moon just over 10 years ago and at first sight, it looked like a thick crescent.

A good list of eclipse cycles (by Robert Van Gent) is found at
http://www.phys.uu.nl/~vgent/calendar/eclipsecycles.htm
It includes a cycle named after me of 391 solar years = 403 lunar years of twelve lunations = 824 eclipse seasons. This cycle divides into four quarters.

Izys (2003-11-10T20:41:54Z)

Ca c'est du cours d'astronomie, David. J'en ai meme compris un gros morceau ! (^_^)
Mais je n'ai pas vu l'eclipse, dommage…

jko (2003-11-10T10:52:06Z)

N'oublions pas que le mouvement des astres est chaotique, donc le calendrier devrait aussi l'être ;)

Matoo (2003-11-09T23:25:08Z)

Ah quand même ça ne vaut pas l'éclipse de soleil de 99… un souvenir surréaliste ! :)

Anonymous Coward #223 (2003-11-09T22:11:58Z)

Une anecdote sans interêt: Dans " Le temple solaire" d'Hergé, Tintin et ses amis sont sauvés grâce à une éclipse solaire qui avait effrayé les incas. Hergé, conscient des capacités scientifiques des incas, disait avec humour que l'éclipse solaire était le seul point noir de son scénario.
Plus sérieusement, il est certain que les incas avaient de solides connaissances astronomiques. Ils connaissaient le phénomène de "Soros" et avaient concu un calendrier qui est une merveille.


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