rhd
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There's so much that goes into the beauty of a beam. While we may have some sense of attributes that we enjoy versus those that we don't, I suspect that as with any other type of subjective beauty, many of us can't really quantify the entirety of what goes into the equation.
Certainly divergence, wavelength, and perceived brightness are obvious factors. But there are other subtle qualities that may matter too, like the way in which a beam highlights individual speckles of dust in the air, or the degree to which a beam gives the the (false) impression of a "slowly moving" stream of particles leaving the emitter. Some of these factors will be related to power and wavelength, others to your environment, still others to the type of optics used, or the pulse rate (if applicable) of the driver.
In other words, there's a whole heck of a lot more to it than wavelength and power.
Certainly divergence, wavelength, and perceived brightness are obvious factors. But there are other subtle qualities that may matter too, like the way in which a beam highlights individual speckles of dust in the air, or the degree to which a beam gives the the (false) impression of a "slowly moving" stream of particles leaving the emitter. Some of these factors will be related to power and wavelength, others to your environment, still others to the type of optics used, or the pulse rate (if applicable) of the driver.
In other words, there's a whole heck of a lot more to it than wavelength and power.
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