Let f', c' and L' be the frequency, speed of light and wavelength the observer moving with speed v towards the light source measures: f'=c'/L'. Textbook authors often derive the Doppler formula f'=(c+v)/L but then stop short, as though by instinct, at the threshold of a dangerous thought:

http://www.liferesearchuniversal.com/1984-17
George Orwell: "Crimestop means the faculty of stopping short, as though by instinct, at the threshold of any dangerous thought. It includes the power of not grasping analogies, of failing to perceive logical errors, of misunderstanding the simplest arguments if they are inimical to Ingsoc, and of being bored or repelled by any train of thought which is capable of leading in a heretical direction. Crimestop, in short, means protective stupidity."

Where does the danger come from? Combining the formulas f'=c'/L' and f'=(c+v)/L gives either:

A) c'=c+v ; L'=L

or:

B) c'=c ; L'=cL/(c+v)

A is obviously correct - and it is correct for all other waves. But it is fatal for Divine Albert's Divine Theory. B is obviously absurd - it would be too dangerous to teach that, due to the motion of the observer, the wavelength somehow shifts from L to L'=cL/(c+v). So textbook authors take refuge in crimestop.

Pentcho Valev