Main > Medical terms> Actinometer


The actinometer (Greek aktinos, aktis – a beam + Greek metreo – to measure) – the device used for measurement of a radiation intensity of artificial sources of heat or direct solar radiation. The actinometer is used, for example, when carrying out medico-climatological and hygienic researches.

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The weight of a human brain makes about 2% of all body weight, however it consumes about 20% of the oxygen coming to blood. This fact does a human brain extremely susceptible to the damages caused by shortage of oxygen.