Newton's reflecting telescope
Référence de la vidéo 12371311
| Animated model of the reflecting telescope designed and built by the English scientist Isaac Newton in 1671-2. Unlike earlier telescopes, which used lenses to focus light, Newton's designs used a concave mirror to focus light, helping to prevent the splitting of colours seen with lenses. This telescope was the third built by Newton, and had a mirror some 5 centimetres in diameter. Newtonian telescopes remain popular, as a large mirror is cheaper and lighter to construct than a lens giving the same light-gathering and magnifying power. Newton used his telescope to observe the phases of Venus and the moons of Jupiter. Master contains alpha channel. | |
| Licence : | Droits gérés |
| Crédit : | Science Photo Library / Power And Syred |
| Model Release : | Non requis |
| Property release : | Non requis |
| Durée : | 30 Secondes |
| Aspect ratio : | 16/9 |
| Restrictions : | - |
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