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Light is reflection. The only thing we can see is the light source and the surface that reflects the light. Daylight is constantly changing in strength, while the colour (spectrum) of light constantly changes in composition. A cold winterday is blue in colour, a warm summerday is more red in colour.

The visible region of the spectrum is between 320 nanometers and 780 nanometers and contains 15 main colours including purple / blue / green / yellow / orange / red. All wavelengths together are observed as white, a white surface looks  white because it reflects all wavelengths. A red surface appears red because it absorbs most of the lightwaves except the red lightwaves.

True-Light full-spectrum daylight lamps are full-spectrum daylight lamps that were developed in the United States in the 1960s to simulate daylight in aerospace (NASA) and Polaris submarines. 

What is daylight?
Light is reflection. The only thing we as humans can see of light is the light source and the surface on which the light reflects. Daylight constantly changes in strength, while the color (the spectrum) of the light constantly changes in composition. A cold winter day is more blue in color and a warm summer day is more red in color, yet both colors are daylight. To get a good light image, you need complete light reflection. Daylight consists of 50% visible light, 5% ultraviolet light and 45% infrared light. In the case of artificial light, this reflection is generated by phosphor powders in a fluorescent tube or by the amount of LEDs in an LED lamp. True-Light's phosphor lamps provide 4.9% UV light. 

What is the difference between True-Light Full spectrum daylight lamps and other daylight lamps? 
This difference is not clearly visible for humans. Therefore, first a brief explanation of the operation of these lamps. Natural daylight covers a bandwidth of 380 to 780 nanometers, including the invisible UV and infrared 'edges' in the phosphor lamps. In daylight, all colors are present in fixed proportions.

This light can be imitated in a full spectrum daylight lamp. This is done in a sodium tube filled with argon gas, the wall of which is covered with phosphor powders and where the beneficial UVA and UVB are also passed on. In America, where True-Light also comes from, a lot of research has been done into the effects of various types of full-spectrum daylight lamps on humans, animals and plants. This showed that only lamps that emit (almost) exactly and constantly the full spectrum of natural light and that very closely approach the color temperature of natural light (such as True-Light ) achieve the positive effects of natural daylight. With lamps that only approximately imitate the full daylight spectrum, these positive effects are largely absent.

Full spectrum daylight lamp literally means: "The full spectrum of sunlight reaching the earth". True-Light full spectrum daylight lamps have a color temperature of 5500 Kelvin, which is the color of daylight in our part of Europe. True-Light's color rendering index is 96 to 98, with natural daylight set at 100. The color index of a normal Cool White lamp is only 70. True-Light has proven for more than 60 years that all the health aspects mentioned are a godsend for humans and animals. The advantages at a glance: True-Light lamps are almost identical to the spectrum of natural daylight (CRI 96-98 / Color temperature 5500 Kelvin). True-Light lamps stimulate the immune system and the synthesis of vitamin D. This is necessary for the absorption of calcium and other minerals into the blood. True-Light has a beneficial effect on the metabolism, oxygen supply, hormones and glands in the human body and therefore helps to combat winter depression, it is the original light therapy lamp True-Light helps you to find your own biorhythm again during shift work or jet-lag, it ensures less sleep disturbances, stress, concentration problems or health complaints.

You can find more information about daylight lamps on this site: https://www.comparedaylightlamps.com

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