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## Main Question or Discussion Point

*I need the following statements logically-'spellchecked'. The internet, nor books will put it this simply, so I typed up what I feel is a summary, but I don't want to be incorrect in my own mind by doing so. So please proof read my logic and correct it for errors:*

The doppler effect IS time dilation. However since light always travels at the same speed, the change in "time" is experienced in nature as a change in energy density of the beam of light, and this is because light does not experience time (otherwise it would decay). The only reason that the doppler effect has a special name in the case of light is because that Doppler fellow who discovered the frequency change for light was born back in the 1800's (before einstein's time).

The doppler effect says that by moving a light source towards an observer the observer will receive more energy per unit per time (because the energy is compressed). This apparent energy change does not violate the conservation of energy because the E in "E=hf" can be broken down into the photon's self energy and the photon's kinetic energy, in which case you subtract the appearant gain in energy due to the frequency change from the photon's self energy (meaning the kinetic energy increases at the same rate as the photon's self energy decreases).

{If correct}

How would I calculate the irradiance (change in flow of energy per unit per time). I'm guessing I'll need to know how fast the laser is moving, and what wattage the laser has, but lets say I have such values (if i'm missing any required input data, let me know).