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what is it lights? where does it come from ?what does light have to do with color ?

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lights what is it? where does it come from ?what does light have to do with color ? life is a kind of energy that travels in waves it is made when matter is heated up or gains energy excess energy is released in part as light energy is called electromagnetic radiation. when we talk about light we usually mean visible light which is the light that we can see with our eyes but there are more types of electromagnetic radiation that are invisible to us putting radio waves microwaves X-rays and gamma-rays.     scientists can detect and measure invisible radiation with special tools because there was visible light all these types of radiation are called the electromagnetic spectrum all electromagnetic radiation travels in waves but different types have different wavelength the wavelength of electromagnetic radiation or light is connected to how much energy it has light with a longer wavelength like a radio wave has less energy while light with a shorter wavelength like galleries has m
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CREE XHP70/XHP70.2 12V/6V 6000K 5000K 3000K LED Emitter Chip Bulb 26mm Driver

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Cree's XLamp XHP70 LED  is powered by Cree's groundbreaking SC5 Technology? Platform,  and is a  member of Cree's Extreme High Power (XHP) class of LEDs that redefines  lumen density and reliability to radically reduce system costs by up to  40 percent. At its maximum current, the XHP70 LED delivers twice the  light output of the XLamp MK-R LED, with similar lumens per watt and  without increasing the package footprint. The XHP70 LED also achieves  longer lifetime at higher operating temperatures than previous LED  technology. The result is significantly lower thermal, mechanical and  optical costs at the system level. 　 XHP70 Specification: Brand: Cree Emitter Color : Cool White,Warm White,Natural White Color Temperature ：6300-6500k,3000-3500K,4 300-4500K, Base : 20mm Copper Board Size (mm) :7.0 x 7.0 Maximum drive current  (A) :4.8 (6-V) Maximum power (W) :32 Light output :Up to 4022 lm @ 32 W Typical forward  voltage (V) - white :5.75 @
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what is the different between cree led and epiled ? what is the best option?

Epiled(epistar) vs cree LED So in general market you can find this two type of chips Quality Cree is good Quality and price is high Epi led is good quality and price is low    2.Cree is smaller than epiled        3.Made in  Cree is originaly from USA company and Epiled is from Taiwan Both chips are made in China      4.Lumins for Watt  Cree about 130 to 200 lumins epiled 100     5.wavelenth accuracy   Cree is more accurate than epiled      6.Angel of the leds Both is about 120°     
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How LED light works?

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From this video you are going to see how led light going to work In this video it is explained how the LED lights are work and what are the components are used to produce led LED light emitting diode wish we also called LED is nothing but like PN Junction diode now it is and it is a most widely used in semiconductor time when it is foreword biased normally this is a semiconductor.  PN Junction diode anode and cathode anode or positive terminal or negative to the PN Junction is surrounded by a transparent hard plastic epoxy resin shape shell to protect this is a transparent cover of the diode although we have already said that led is the same as ordinary PN Junction diode but it is also true that ordinary PN Junction diode does not emit light when it is forward biased. When any diode is forward biased current flows through the diodes in forward bias condition positive terminal of battery is connected to a tight end a negative terminal of battery is connected to n-type end of
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How does led red light 620nm -750nm works? what is the capable of red 620nm-720nm color ?

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How does led red light 620nm-750nm works? what is the capable of red 620nm-750nm color ? You can use this led for Indoor gardening,Hydroponics, Aquarium skin therapy Hydroponics What is hydroponics? Hydroponics, by definition, is a method of growing plants in a water based, nutrient rich solution. Hydroponics does not use soil, instead the root system is supported using an inert medium such as perlite, rockwool, clay pellets, peat moss, or vermiculite. The basic premise behind hydroponics is to allow the plants roots to come in direct contact with the nutrient solution, while also having access to oxygen, which is essential for proper growth. Aquarium Aquarium lighting  describes any type of artificial  lighting  that is used to illuminate an  aquarium . Some types of aquarium such as  reef aquariums  and planted  aquariums  require specialized high intensity  lighting  to support photosynthetic life within the  tank Skin  therapy
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What is infrared LED ? various colors of infrared ? what infrared can do to our body?

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What is Infrared led? An IR LED (infrared light emitting diode) is a solid state lighting (SSL) device that emits light in the infrared range of the electromagnetic radiation spectrum. IR LEDs allow for cheap, efficient production of infrared light, which is electromagnetic radiation in the 700 nm ,850nm,940nm to 1mm range. IR LEDs are useful in a number of types of electronics, including many types of remote controls for televisions and other electronics. Used with infrared cameras, IR LEDs can act like a spot light while remaining invisible to the naked eye . Various colors of infrared? Infrared radiation extends from the nominal  red  edge of the  visible spectrum  at 700  nanometers  (nm) to 1  millimeter  (mm). This range of wavelengths corresponds to a  frequency  range of approximately 430  THz  down to 300  GHz . Below infrared is the microwave portion of the  electromagnetic spectrum . Abbreviation Wavelength Frequency IR-A 700 nm – 1400 nm (0.7 μm – 1.4 μm) 215 
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What are lumens ? What are Lux ?

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what are Lumens and why are they the most commonly used unit of measurement for lighting product?  there's only a lot of different ways to measure visible light out there depending on the product and the application and contrary to popular lumen opinion exactly the best measurement for the Emergency warning Market before we get a better understanding of                         what part of the electromagnetic spectrum?  the Spectrum begins with super long radio waves measuring the size of Mount Everest to super tiny gamma rays still larger than Atomic nuclei the section between infrared and ultraviolet light is known to us as visible light wavelength for higher power now that we understand what we can and can't see  let's learn a little more about a human eye sensitivity believe it or not the human eye doesn't react the same to all colors on the Spectrum when looking at the visible light spectrum you will notice that are high is the most sensitive at about
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