E. & O. E.
New member
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." ThatÃ"šÃ‚´s right. But looking at figures 2,3, etc (of part II, photons) I see a continuous distrubution of wavelenghts. DoesnÃ"šÃ‚´t that mean, that a HQI-bulb emitts (sends out) all possible wavelengths between 400 and 700 nm?! But thatÃ"šÃ‚´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." ThatÃ"šÃ‚´s right. But looking at figures 2,3, etc (of part II, photons) I see a continuous distrubution of wavelenghts. DoesnÃ"šÃ‚´t that mean, that a HQI-bulb emitts (sends out) all possible wavelengths between 400 and 700 nm?! But thatÃ"šÃ‚´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