Volcanologists using a thermocouple
Numéro d’image : 12057562
| In the field,volcanologists can use a thermocouple to measure the temperature of a steaming fissure or of a lava flow. A thermocouple is a device consisting of two different metallic conductors that are connected at both ends,producing a loop in which heat is converted into electrical current when there is a difference in temperature between their two junctions. It is used to measure the temperature of a third substance by connecting it to both junctions and measuring the voltage generated between them. The temperature is read off by a hand-held device | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / O'Meara, Stephen & Donna |
| Taille de l’image : | 2296 px × 3240 px |
| Model Release : | Le droit n'est pas encore disponible. Merci de nous contacter avant utilisation. |
| Property Release : | Non requis |
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