Speed of Light: Obviously Variable

A light source emits a series of pulses equally distanced from one another (for instance, the distance between the pulses is 300000 km). A stationary observer (receiver) measures the frequency:

http://www.einstein-online.info/imag...ler_static.gif

The observer starts moving with constant speed towards the light source - the measured frequency increases:

http://www.einstein-online.info/imag...ector_blue.gif

Does the speed of the pulses relative to the observer increase as well? We have the formula

(measured frequency) = (speed of the pulses relative to the observer)/(distance between the pulses)

which shows that the speed of the pulses relative to the observer does increase unless the motion of the observer miraculously causes the distance between the pulses to decrease (for instance, as the observer starts moving, the distance between the pulses somehow shifts from 300000 km to 200000 km).

Conclusion: Since the motion of the observer is obviously unable to change the distance between the pulses, the speed of light varies with the speed of the observer, in violation of Einstein's relativity.

Pentcho Valev