photoelectric
related to the release of electrons from a surface in the process of lighting

فوتوإلكتروني, كهربائي ضوئي

[صفة]
photometry
the scientific measurement of light in terms of its intensity, color, and other properties

فوتومتري

[اسم]
phosphorescence
a light that is released for a long period of time even after its source energy is gone or finished

تألق فوسفوري, إشعاع فوسفوري

[اسم]
biennial
(of a plant) growing during the first year of its life, producing fruits or flowers and die in the second year

ثنائي الحول, سنويان

[صفة]

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