Non-smoker & smoker forearms
Numéro d’image : 11846483
| Smoker's forearms. Thermogram of forearms seen before (left) and 5 minutes after smoking a cigarette (right). The thermograms show the skin's temperature by recording its emission of infrared radiation. This heat radiation is displayed with each temperature in a different colour. Here,the temperature scale runs from white (over 34 degrees Celsius) through red (33 degrees),yellow (32 degrees) and green (30-31 degrees) to blue (28-29 degrees). After smoking,the blood vessels have undergone vasoconstriction (narrowing),cooling the forearms as less blood is flowing into them. The narrowing is mainly due to nicotine,the addictive nerve stimulant that cigarettes contain | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Tucker, Dr. Arthur |
| Taille de l’image : | 3756 px × 2479 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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