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FraggledRock
03/05/2015, 11:54 AM
This BBC video states that scientists don't really know how corals fluoresce.

From my research it states that the Zooanethlaagee cause it to fluoresce.

https://www.youtube.com/watch?v=AK1sfx3iGbA

35:00

?

MondoBongo
03/05/2015, 12:25 PM
this is still very much an area that science is still learning much about. they know what makes it glow, but not really why or, in many ways, how.

check this out:
http://reefcentral.com/forums/showthread.php?t=2374223

i posted this a while ago. a lot of it is over my head as a hobbyist, but there are some really interesting tidbits in there.

FraggledRock
03/05/2015, 12:26 PM
this is still very much an area that science is still learning much about. they know what makes it glow, but not really why or, in many ways, how.

check this out:
http://reefcentral.com/forums/showthread.php?t=2374223

i posted this a while ago. a lot of it is over my head as a hobbyist, but there are some really interesting tidbits in there.

cool thanks!

what I can conclude is that, creatures in nature don't see the way we see.

we see colors based on what light spectrum is reflected.

so maybe animals in the oceans see corals the way we see them under blue leds?

why? why anything? lol

cloak
03/05/2015, 01:06 PM
Here's another link regarding fluorescence.

http://www.advancedaquarist.com/2006/9/aafeature

FraggledRock
03/05/2015, 03:02 PM
here's another link regarding fluorescence.

http://www.advancedaquarist.com/2006/9/aafeature

wow! Thanks great reading! I'm face to the screen right now! Lol

Paul B
03/05/2015, 03:05 PM
Scientists also don't know why some tanks are affected by ich or not, or why some tanks are full of hair algae and some are not, why some otherwise really handsome men are bald or why Supermodels are so skinny.

FraggledRock
03/05/2015, 03:05 PM
Here's another link regarding fluorescence.

http://www.advancedaquarist.com/2006/9/aafeature

SO to view the fluorescent capabilities of the proteins withheld we need to change what bulbs nm we use for excitation?

FraggledRock
03/05/2015, 03:06 PM
Scientists also don't know why some tanks are affected by ich or not, or why some tanks are full of hair algae and some are not, why some otherwise really handsome men are bald or why Supermodels are so skinny.

so you're saying men with hair are not handsome? i need to shave my head! lol

jrr98002
03/05/2015, 03:10 PM
SO to view the fluorescent capabilities of the proteins withheld we need to change what bulbs nm we use for excitation?

That's correct. Fluorescence is caused by excitation of electrons (actually it's when the energy is released when the electrons return to their ground states) and certain proteins/molecules' electrons only absorb at certain energies (correlates to nanometers of light) to do this.

MondoBongo
03/05/2015, 03:15 PM
Scientists also don't know why some tanks are affected by ich or not, or why some tanks are full of hair algae and some are not, why some otherwise really handsome men are bald or why Supermodels are so skinny.

sure they do, you just haven't asked them.

FraggledRock
03/05/2015, 03:20 PM
That's correct. Fluorescence is caused by excitation of electrons (actually it's when the energy is released when the electrons return to their ground states) and certain proteins/molecules' electrons only absorb at certain energies (correlates to nanometers of light) to do this.

would it be possible to create an led strip with different nM LED colors ranging from the 200 to 500 nM spectrums to get as many electrons/proteins excited? or possibly use photography Gel type filters over the blue leds to filter out some of the bulbs to get purple to shine thorugh?

giggitty

jrr98002
03/05/2015, 03:27 PM
would it be possible to create an led strip with different nM LED colors ranging from the 200 to 500 nM spectrums to get as many electrons/proteins excited? or possibly use photography Gel type filters over the blue leds to filter out some of the bulbs to get purple to shine thorugh?

giggitty

Yeah, that's certainly possible...the only real issue is making sure you have a decent enough intensity of your certain wavelength(s) of light hitting the particular protein/molecule to produce a visible fluorescence to the human eye. LEDs are a point-source light and I forget the exact equation (I got my degree in 2005 and I'm technically a theoretical physical chemist, not a pure physicist) but intensity goes down fairly quickly with distance, but I would assume if you could pack enough LEDS of enough different wavelengths tight enough together with high enough wattage you could do it...although you could end up burning the corals with that much light. It'd be a delicate balance, but theoretically possible. It'd be fun to try at least. Go bug one of the DIYers in the other forum to do it.

FraggledRock
03/05/2015, 03:31 PM
Yeah, that's certainly possible...the only real issue is making sure you have a decent enough intensity of your certain wavelength(s) of light hitting the particular protein/molecule to produce a visible fluorescence to the human eye. LEDs are a point-source light and I forget the exact equation (I got my degree in 2005 and I'm technically a theoretical physical chemist, not a pure physicist) but intensity goes down fairly quickly with distance, but I would assume if you could pack enough LEDS of enough different wavelengths tight enough together with high enough wattage you could do it...although you could end up burning the corals with that much light. It'd be a delicate balance, but theoretically possible. It'd be fun to try at least.

yea i think its what I learned it photography the inverse square.

http://en.wikipedia.org/wiki/Inverse-square_law

every double distance is half the output i think or close to that.

ill do some loose research to see if I can even get my hands on <=200nm to 500

http://en.wikipedia.org/wiki/Ultraviolet

thats almost pretty much pure ultraviolet light and the tank would look dark as hell (ironically) lolol

RxReefer
03/05/2015, 05:48 PM
You would definitely not want to get anywhere near 200nm because that would be the equivalent of putting tanning bulbs over your tank that would give your fish and coral quite a sunburn. I believe UV sterilizes actually use around that range. Anything in the low 300nm range is going into UVB....no good. There are a number of options of leds in the low 400nm range that you would be able to use in conjunction with other leds in the visible wavelength.

FraggledRock
03/05/2015, 09:44 PM
You would definitely not want to get anywhere near 200nm because that would be the equivalent of putting tanning bulbs over your tank that would give your fish and coral quite a sunburn. I believe UV sterilizes actually use around that range. Anything in the low 300nm range is going into UVB....no good. There are a number of options of leds in the low 400nm range that you would be able to use in conjunction with other leds in the visible wavelength.

good obvservation, thanks!