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7-dehydrocholesterol (desmosterol) is a crystalline steroid alcohol that occurs chiefly in higher animals and man (as in the skin), that is made synthetically from cholesterol, and yields vitamin D3 on irradiation with ultraviolet light.
 Research 7-dehydrocholesterol
Baily's Beads is a phenomenon attending eclipses of the sun, the unobscured edge of which appears discontinuous and broken immediately before and after the moment of complete obscuration. It is classed as an effect of irradiation.
Research Baily's Beads
Ergosterol is a naturally occurring higher alcohol which upon irradiation with ultra-violet light changes into Vitamin D.
Research Ergosterol
Irradiation is the process of exposing something to radiation. It is used to preserve food and destroy cancer growths.
Research Irradiation
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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