Scooterman
Active Member
I'm forwadring all my mail to Mike! 
The truth about lighting
- Thread starter ScottT1980
- Start date
Scooterman
Active Member
Tg I think that will work for any nurmeric form, you will have to convert either all to the metric system or all US standard.
ScottT1980
Well-Known Member
I don't think they are either TG...
Scooterman
Active Member
In grenral I think light is measured in the metric terms but easily can be converted. Now as for as LUX & Lumens, these are units of light measurments. 1 LUX = .09290304 foot-candles; 1 Lumen /m2 = 0.092903 Footcandle; 1 Phot = .0000929 Footcaldles; 1 Nox = 929.0304014 Footcandle: 1 Meter Candle = 0.092903 Footcandle: thanks to conversion charts!
http://www.onlineconversion.com/
http://www.onlineconversion.com/
Boomer
Reef Sanctuary's Mr. Wizard
TG
It works for either, but I messed up wasn't thinkin' late at night. I gave LUX in my example, so that would need to be in m not feet. If I used LUM. 18,200 then I cound have used feet.
It has been corrected
Thanks for showing the error. Also the ISL can get complicated. Did you miss this link I gave. Also click on the book.
http://www.intl-light.com/handbook/ch06.html
Make sure TG you read chapter 7
Scoot
That is a nice little calulator haven't see it thanks. You forgot one though I gave it earlier though.
1 lumen = 10.76 LUX
Meaning 1 LUMNEN /square foot = 10.76 LUMENS square meter, as there are 10.76 sqaure feet in a sqaure meter and 1 LUMEN in a square foot
All one need to remember is the
1 LUMEN = 10.76 LUX, if you have a LUX value just divide it = by 10.76, i.e
15 LUMENS = 161.4 LUX ( 15 x 10.76)
161.4 LUX = 15 LUMENS (161.4 / 10.76)
Also don't forget that Lumen /m2 is the same as LUX .
40 lumens / m² = 40 LUX
It works for either, but I messed up wasn't thinkin' late at night. I gave LUX in my example, so that would need to be in m not feet. If I used LUM. 18,200 then I cound have used feet.
It has been corrected
Thanks for showing the error. Also the ISL can get complicated. Did you miss this link I gave. Also click on the book.
http://www.intl-light.com/handbook/ch06.html
Make sure TG you read chapter 7
Scoot
That is a nice little calulator haven't see it thanks. You forgot one though
I gave it earlier though.1 lumen = 10.76 LUX
Meaning 1 LUMNEN /square foot = 10.76 LUMENS square meter, as there are 10.76 sqaure feet in a sqaure meter and 1 LUMEN in a square foot
All one need to remember is the
1 LUMEN = 10.76 LUX, if you have a LUX value just divide it = by 10.76, i.e
15 LUMENS = 161.4 LUX ( 15 x 10.76)
161.4 LUX = 15 LUMENS (161.4 / 10.76)
Also don't forget that Lumen /m2 is the same as LUX .
40 lumens / m² = 40 LUX
Last edited:
Craig Manoukian
Well-Known Member
Man I almost understand the lumen/lux examples, scary!:columbo:
Thanks Boomer :smirk:
Thanks Boomer
:smirk:
rckmtl
Active Member
"Fluorescence occurs when a substance absorbs light of one wavelength and emits it at a longer wavelength -- often as visible light."
"Fluorescence is the property of certain molecules, or fluorophores, to absorb light at one wavelength and emit a light at a longer wavelength. The incident light excites the molecule to a higher level of vibrational energy. As the molecule returns to the ground state, the excited fluorophore emits a photon. This photon is the fluorescence emission."
I decided not to be lazy today. I rembered that I studied this one a long time ago, but could not remeber how to word the explanation. Fortunatally other people did it for me.
One thing about light, and heat that helped me to understand concepts relating to them is this. To alwys remeber that whatever it is called, light, heat, radiation, ect... it is just a form of energy. If you think about it in terms of being energy it is easier to understand. For me anyway. When I hear the word light, or heat, it brings very specific concepts to my mind. but if I think 'what type of energy is this' or 'how will it react to this type of energy', it makes things a lot simpler.
"Fluorescence is the property of certain molecules, or fluorophores, to absorb light at one wavelength and emit a light at a longer wavelength. The incident light excites the molecule to a higher level of vibrational energy. As the molecule returns to the ground state, the excited fluorophore emits a photon. This photon is the fluorescence emission."
I decided not to be lazy today. I rembered that I studied this one a long time ago, but could not remeber how to word the explanation. Fortunatally other people did it for me.
One thing about light, and heat that helped me to understand concepts relating to them is this. To alwys remeber that whatever it is called, light, heat, radiation, ect... it is just a form of energy. If you think about it in terms of being energy it is easier to understand. For me anyway. When I hear the word light, or heat, it brings very specific concepts to my mind. but if I think 'what type of energy is this' or 'how will it react to this type of energy', it makes things a lot simpler.