Measuring the position of the Sun in the sky, illustration. The device being used here is a sextant, an instrument that is used to measure the angle between an astronomical object (here, the Sun) and the horizon for the purposes of celestial navigation. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / TIM BROWN |
Taille de l’image : | 4488 px × 3955 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |