The science behind the Multi-Temp Light
Have you noticed how a group of neophyte musicians who are poor soloists, sound pretty good as a band. What you
are hearing is the leveling effect that occurs when you combine individuals that each have imperfections. The same leveling
effect occurs with the Multi-Temp Light that uses four cool burning fluorescent light bulbs of different color temperatures
to produce very natural lighting. The mixed lighting reduces eyestrain and improves the eye's ability to
focus.
| Cool White bulb |
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Why? Every light source produces an array of light frequencies that contain peaks and valleys of certain light frequencies.
The graphic to the right is a representation of a "Cool White" fluorescent bulb. Note that there is bump in the curve
at the green frequencies. Although not severe, this bump does give these lights a slight greenish cast.
"Warm White" bulbs have a bump at the red yellow frequencies resulting in a warmer reddish cast.
The human eye is designed to operate best in natural daylight that contains a very broad mix of light frequencies.
Any light that is not as broad produces less than optimal results. Laser light is an extreme example.
Laser light is "coherent light" or a light that has only one frequency, most commonly red. You may remember the first
digital watches that used red light emitting diodes (L.E.D.s) to display the digits and how uncomfortable they were to view,
especially in dark surroundings. You may also notice that the spot of red light created by a laser pointer looks grainy
and the grains seem to move around. (Caution! Never look directly into a laser. We are talking about
looking at the spot of illumination created by the laser on a wall or piece of paper not the laser itself.) This apparent
grainy movement is caused by internal components of the eye continuously searching for proper focus. With
only one frequency of light, perfect focus is difficult and cannot be achieved. The same thing occurs to a
lesser extent with less than perfect daylight.
This is why mixing several light sources, of different frequency spectrums, is beneficial. The resultant mixed light reduces
the effect of the color spectrum peaks. It provides balanced lighting that mimics natural daylight more accurately. As
a result, the human eye has the ability to maintain focus on detail more easily reducing eyestrain and fatigue.
The graph below is a representation of this leveling effect caused by mixing. Note how the four different light curves
add up to create a fairly level smooth white light (white line).
| Four bulbs behind protective diffuser |
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The bulbs used in our system are a mix of colors including: "Daylight" 6400K*, "Truetone" 5000K*, "Cool White"
4100K* and "Warm White" 2700K*. Pink, Black-Light (ultra-violet), Yellow, Red, or any other color can also be used.
The user can determine which combination of wattage and color bulbs will serve the purpose best. Although as few as two bulbs
can be used to get the frequency leveling effect, our test indicate that the best results for task lighting and reading
consist of using four bulbs simultaneously: "Daylight" 6400K, "Truetone" 5000K, "Cool White" 4100K and "Warm White" 2700K.
Another advantage of the Multi-Temp is color rendition. The Multi-Temp Light has a very high CRI or Color Rendition
Index. With the Multi-Temp colors look brighter, richer and more accurate.
There are competitive lights that use only one bulb, either a "Daylight" or "Truetone" bulb. These lights are cheaper
but do not achieve the same results as the Multi-Temp. Their light is "flat" looking because they do not mix light
sources of different color temperatures with slightly different bulb locations which is the key to the effectiveness
of the Multi-Temp Light and the basis of our approved patent (United States Patent 7,083,293 B2 August 01, 2006) .
* The letter K stands for Kelvin, a measurement of color temperature
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