Fichier:NewtonsTelescopeReplica.jpg
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Taille de cet aperçu : 689 × 600 pixels. Autres résolutions : 276 × 240 pixels | 552 × 480 pixels | 883 × 768 pixels | 1 024 × 891 pixels.
Fichier d’origine (1 024 × 891 pixels, taille du fichier : 376 kio, type MIME : image/jpeg)
Description
| Description |
This was a new design of telescope - the Newtonian reflector. Newton's work on optics and splitting white light, led him to believe that all refracting telescopes would suffer from chromatic aberration. His new design of reflecting telescope minimized this problem. However, due to problems with accurately grinding the mirror, Newton's telescope actually caused more image distortions than other contemporary telescope and more than a century passed before reflecting telescope became popular. Newton's first telescope had an objective concave primary mirror diameter of about 1.3 inches (33 mm) with a 6 inch (150mm) long focal length. It had the ability to magnify about 40 times, with a performance similar to a 6 foot (2m) long refracting telescope Newton compared it to (PBS/Nova: Newton's Dark Secrets). Newton presented a second version of his reflector to the Royal Society in 1672 (The History of the Telescope By Henry C. King, Page 74) and was admitted as a fellow of the society in the same year. This replica of that second Royal Society reflector and is in the Whipple Museum of the History of Science in Cambridge. |
| Date | |
| Source | www.andrewdunnphoto.com |
| Auteur | User:Solipsist (Andrew Dunn) |
Conditions d’utilisation
| Photograph © Andrew Dunn, 5 November 2004. |
| Website: http://www.andrewdunnphoto.com/ |
Moi, en tant que détenteur des droits d’auteur sur cette œuvre, je la publie sous la licence suivante :    Ce fichier est disponible selon les termes de la licence Creative Commons Attribution – Partage dans les Mêmes Conditions 2.0 Générique
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Image history of en:Image:NewtonsTelescopeReplica.jpg:
- (del) (rev) 00:32, 6 November 2004 . . Solipsist . . 1024×891 (119,970 bytes) (A replica of Isaac Newton's telescope of 1672.)
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| Date et heure | Vignette | Dimensions | Utilisateur | Commentaire | |
|---|---|---|---|---|---|
| actuel | 19 avril 2019 à 15:52 | | 1 024 × 891 (376 kio) | wikimediacommons>Fabian RRRR | Reverted to version as of 07:16, 10 January 2010 (UTC), more realisitc |
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