Sunshine recorder

Numéro d’image : 11738677
Sunshine recorder
Campbell-Stokes sunshine recorder. This instrument design has been used worldwide for many years. It is used to record the daily duration of sunshine. Slightly variant designs are used for tropical,subtropical,and temperate latitudes. This is the tropical variant. The sunlight passes through the glass ball,which is mounted at an angle that is adjusted for the latitude. The sunlight passing through the ball is focused onto the recording card and chars a trace along the card. Different shaped cards are used depending on the season (summer,equinoxes,winter). The cards are marked with hour divisions
Licence : Droits gérés
Crédit: Science Photo Library / Rapson, Paul
Taille de l’image : 3871 px × 4524 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

Prix pour cette image À partir de 45 €

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Usage non-commercial
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À partir de 120 €

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