LED Fluorescent Powder Hot Sale with High Quality Supplied By China

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Product Description:

Description of LED Fluorescent:

Extensive usage: it applies to various LED encapsulation from cool white to warm white. The rendering index can be up to 98 with red powder.


Festures of LED Fluorescent:

Fluorescent powder or Phosphors are often transition metal compounds or rare earth compounds of various types. The most common uses of phosphors are in CRT(cathode ray tube) displays and fluorescent lights. CRT phosphors were standardized beginning around World War II and designated by the letter "P" followed by a number.Phosphorus, the chemical element named for its light-emitting behavior, emits light due tochemiluminescence, not phosphorescence.


Specifications of LED Fluorescent:

u  Appearance:Yellow crystal powder.

u  Chemical Component:Rare earth garnet.

u  Chemical Stability:No decomposability in water, strong stability from -50°C to 300°C in the air.

u  Safety Capability:Meet the RoHS standard, no radiation, no toxicity, no hazard to human, and no pollution to environment.


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LED Fluorescent Powder Hot Sale with High Quality Supplied By China

 

FAQ:

1.When can i get the price quotation?

We can send you the quotation within 24hours after your inquiry, including the shipping cost if you need.

2.What about payment term?

30% T/T deposit, balance against B/L copy.

Full T/T payment if quantity less than MOQ.

3. What’s your after-sales service?

One-year warranty, and 1% common accessories.

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Q:does photosythesis requier pigment moulecuels?
Pigments are needed, because they absorb the energy from the light. Different chlorophylls absorb different wavelengths. When pigment absorbs the photon, it releases an electron, which is used in photosynthesis as energy. Without pigment the light would just past through or reflect and no energy would be left to the cell to be turned into sugar.
Q:what are the accessory pigments in plant photosynthesis?
Accessory Pigments In Photosynthesis
Q:can the pigment know as Chinese purple form a matter wave in certain circumstances?
Peaceful demonstrations, which are the sorts urge by governments, are just a way of letting the public let off steam safely without achieving anything. It is most convenient for them - every one has a jolly time, a bit of bantering, and we all go back to the status quo. Just like the House, a lot of empty debates, and the government just goes ahead and does what it wants. The public is beginning to become aware of the severe limitations of democracy as it is practised in the west. There are times, as the government claims, it has to do what has to be done, even though the actions may be 'unpopular', meaning they are not supported by the majority, and therefore undemocratic. Thus, we have supposedly democratic governments doing undemocratic things (and we accuse other countries with different systems of being undemocratic!). In such situations where democratic governments are acting undemocratically, the public surely has a right to resort to actions other than the ballot box (denied them anyway), or futile gestures. The government is supposed to represent majority will in our system; where it ceases to do so, it has lost its mandate, and, should arguable be replaced before the election comes round.
Q:thinking about the main role of pigments in photosynthesis...?
Green pigments absorb light in the red and blue parts of the spectrum and reflect the green back to our eyes. The major functional difference between chlorophyll and say jade green is that only the chlorophyll in living systems can transfer the absorbed light energy and the excited electron to another molecule, thus trapping it. In biology, pigment is any material resulting in color in plant or animal cells which is the result of selective absorption. Some biological material has so-called structural color, which is the result of selective reflection or iridescence, usually done with multilayer structures. Unlike structural color, pigment color is the same for all viewing angles. Nearly all types of cells, such as skin, eyes, fur and hair contain pigment. Butterfly wings typically contain structural color, although many of them contain pigment as well. Creatures that have deficient pigmentation are called albinos. In the coloring of paint, ink, plastic, fabric and other material, a pigment is a dry colorant, usually an insoluble powder. There are both natural and synthetic pigments, both organic and inorganic ones. Pigments work by selectively absorbing some parts of the visible spectrum (see light) whilst reflecting others. A distinction is usually made between a pigment, which is insoluble, and a dye, which is either a liquid, or is soluble. There is no well-defined dividing line between pigments and dyes, however, and some coloring agents are used as both pigments and dyes. In some cases, a pigment will be made by precipitating a soluble dye with a metallic salt. The resulting pigment is called a lake.
Q:Where about in the beetroot is the pigment concentrated more?
I've known it to be in the skin and thats from a cooking point of view.
Q:do all leaves extract contain the same pigments??why?
Plants okorder.com/... Plants have classes of pigments that act as adjuncts to the chloroplast's chlorophyll, in several ways. Some are accessory pigments that broaden the range of absorbed light. These pigments are found in the light gathering arrays in chloroplasts. They also alter the color of the leaf depending on what specific pigments it has to gather light energy and that determines what is reflected (green is the basic reflected spectra but is might be yellowish or bluish green). The major accessory class of pigments, the carotenoids, collect light in the red to yellow wavelengths chlorophyll a can’t, then the carotenoids transfer the energy to chlorophyll a to process. Among the carotenoids are the xanthophylls that provide UV protection for the light gathering centers of the chloroplast. Plants adapt to situations and some just have fewer chloroplasts so have less chlorophyll and absorb less of the light. In low light situations they need fewer so variegated plants are possible. This reduced chlorophyll level allows small amounts of other pigments like the yellow pigment xanthophyll to show up.
Q:what is pigment eyeshadow?
All these people are looking for a way through which they can make their skin look good. Yet, what they have not taken into consideration is the power of natural ingredients. Fruits, vegetables and products coming from animals are great sources of anti-oxidants and are rich in substances which can whiten the skin, moisturize it, attenuate the fine lines and wrinkles and give it elasticity.
Q:Separation of plant pigments?
Separation of plant pigments using chromatography. Paper chromatography is a useful technique in the separation and identification of different plant pigments. In this technique, the mixture containing the pigments to be separated is first applied as a spot or a line to the paper about 1.5 cm from the bottom edge of the paper. The paper is then placed in a container with the tip of the paper touching the solvent. Solvent is absorbed by the chromatographic paper and moved up the paper by capillary action. As the solvent crosses the area containing plant pigment extract, the pigments dissolve in and move with the solvent. The solvent carries the dissolved pigments as it moves up the paper. The pigments are carried along at different rates because they are not equally soluble. Therefore, the less soluble pigments will move slower up the paper than the more soluble pigments. This is known as developing a chromatogram.
Q:whats pigment?
Color.
Q:what are accessory pigments?
Accessory pigments are light-absorbing compounds, found in photosynthetic organisms, that work in conjunction with chlorophyll a. They include other forms of this pigment, such as chlorophyll b in green algal and higher plant , while other algae may contain chlorophyll c or d. In addition, there are many non-chlorophyll accessory pigments, such as carotenoids or phycobiliproteins which also absorb light and transfer that light energy to photosystem chlorophyll. Some of these accessory pigments, particularly the carotenoids, also serve to absorb and dissipate excess light energy, or work as antioxidants. The different chlorophyll and non-chlorophyll pigments associated with the photosystems all have different absorption spectra, either because the spectra of the different chlorophyll pigments are modified by their local protein environment, or because the accessory pigments have intrinsic structural differences. The result is that, in vivo a composite absorption spectrum of all these pigments is broadened and flattened such that a wider range of visible and infrared radiation is absorbed by plants and algae. Most photosynthetic organisms do not absorb green light well, thus most remaining light under leaf canopies in forests or under water with abundant plankton is green, a spectral effect called the green window. Organisms such as some cyanobacteria and red algae contain accessory phycobiliproteins that absorb green light reaching these habitats. For more kindly click on the links below --- en.wikipedia.org/wiki/Accessory_p... en.wikipedia.org/wiki/Photosynthe...

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