I posted this elsewhere but think the questions kind of got lost, so I'm trying with a new thread. Please think of me as a science numpty but with an eager willingness to learn and who will be grateful to anyone for answers to these and possibly later questions. Okay... first two science questions from a numpty regarding waves in the electro-magnetic spectrum. 1. Is the wave length constant? Visual representations incorporating a degree of perspective can be interpreted as showing that waves start off smaller and closer together, becoming longer and further apart as they reach earth. Is that, though, a distortion, and does a particular form of energy have a constant wavelength from source? 2. Would it be fair to refer to the sun's energy as 'pulsing'? Your expertise will be much valued.