In facsimile, a frequency modulationsystem where one frequency represents picture black and another frequency represents picture white[?]. Frequencies between these two limits may represent shades of gray
An intentional frequency change used for modulation purposes
... reaction
NADP+ + H+ + 2e- → NADPH
This consumes the H+ ions produced by the splitting of water, leading to a net production of O2, ATP, and NADPH with the ...