E. & O. E.
04/11/2006, 11:37 AM
Hi Sanjay,
much thanks for your great articles about light! I read them with pleasure.
You wrote, "...that photons are generated when electrons shift from a higher energy level to a lower level and these energy levels are discret." That´s right. But looking at figures 2,3, etc (of part II, photons) I see a continuous distrubution of wavelenghts. Doesn´t that mean, that a HQI-bulb emitts (sends out) all possible wavelengths between 400 and 700 nm?! But that´s an infinite number! So my question: Why are there no "black holes" in the distribution? Or in other words: Why is there a continuous spectrum instead of an expected line spectrum?
And by the way: In your figures sunlight is shown as a contiuous spectrum. But remember the Fraunhofer-lines - there are a lot of wavelenghts missing in the sunlight! Do you know, whether anybody ever checked out, whether the wavelengths corresponding to the Fraunhofer-lines are missing in the light from our HQI-bulbs, too? Otherwise we illuminate our corals with wavelengths, which they have never seen in their life ... Please excuse my bad English :( With kind regards, Erwin
much thanks for your great articles about light! I read them with pleasure.
You wrote, "...that photons are generated when electrons shift from a higher energy level to a lower level and these energy levels are discret." That´s right. But looking at figures 2,3, etc (of part II, photons) I see a continuous distrubution of wavelenghts. Doesn´t that mean, that a HQI-bulb emitts (sends out) all possible wavelengths between 400 and 700 nm?! But that´s an infinite number! So my question: Why are there no "black holes" in the distribution? Or in other words: Why is there a continuous spectrum instead of an expected line spectrum?
And by the way: In your figures sunlight is shown as a contiuous spectrum. But remember the Fraunhofer-lines - there are a lot of wavelenghts missing in the sunlight! Do you know, whether anybody ever checked out, whether the wavelengths corresponding to the Fraunhofer-lines are missing in the light from our HQI-bulbs, too? Otherwise we illuminate our corals with wavelengths, which they have never seen in their life ... Please excuse my bad English :( With kind regards, Erwin