Re: "Crawl On Lights"

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Posted by Bob on October 28, 1998 at 22:12:23:

In Reply to: Re: "Crawl On Lights" posted by Roman on October 28, 1998 at 21:10:33:

: I, for one would like to reject it. I know that lizards do sense light from above throught their pinial(?) eye on top of their heads, but the skin on their back is no different (except for color) than the skin on their bellies. Just the same as we get sunburned or tan on both sides of our bodies, our skin is the same on all sides and is susceptible to UV rays. Also their have been tests that show "UV" lights lose their effectiveness over a length of about 12"-18" and being up very close to these lights would be very effective.

Roman, when was the last time you got a tan on the palms of your hands or the soles of your feet.
Just because the skin may look similar doesn't mean that it is. Color has alot to do with an objects emmisivity and reflectivity. Pigment could play a role in how much UV absorbtion would occur as well as other possible factors as skin thickness, physical characteristics of the scales, etc. Maybe lizards can absorb UV in this way, but I am quite skeptical. Some data would be nice to show these light covers do increase UV absorbtion in various reptiles.

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: : I, for one would like to reject it. I know that lizards do sense light from above throught their pinial(?) eye on top of their heads, but the skin on their back is no different (except for color) than the skin on their bellies. Just the same as we get sunburned or tan on both sides of our bodies, our skin is the same on all sides and is susceptible to UV rays. Also their have been tests that show "UV" lights lose their effectiveness over a length of about 12"-18" and being up very close to these lights would be very effective. : Roman, when was the last time you got a tan on the palms of your hands or the soles of your feet. : Just because the skin may look similar doesn't mean that it is. Color has alot to do with an objects emmisivity and reflectivity. Pigment could play a role in how much UV absorbtion would occur as well as other possible factors as skin thickness, physical characteristics of the scales, etc. Maybe lizards can absorb UV in this way, but I am quite skeptical. Some data would be nice to show these light covers do increase UV absorbtion in various reptiles.

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