“+ noun
Etymology: spectro- + pyrheliometer
: an instrument for measuring the energy distribution in the visible and ultraviolet spectrum of emitted radiation from the sun
“+ noun
Etymology: spectro- + pyrheliometer
: an instrument for measuring the energy distribution in the visible and ultraviolet spectrum of emitted radiation from the sun
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012