thermography ༡། med དྲོད་པར་བརྟག་ཐབས། = དམར་ཕྱིའི་འོད་ཟེར་གྱི་པར་ཆས་
Pre-stimulus diameter is measured one frame prior to light exposure.
Light, Action, Illumination: These three words can be used to describe the general topics in the given texts