LED Fluorescent Powder with High Brightness from China
- Ref Price:
-
- Loading Port:
- Huangpu
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 44 kg
- Supply Capability:
- 100000 kg/month
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Description of LED Fluorescent:
Fluorescent powder (Phosphors) are usually made from a suitable host material with an added activator. The best known type is a copper-activated zinc sulfide and the silver-activated zinc sulfide (zinc sulfide silver).
Festures of LED Fluorescent:
The host materials andoxynitrides,sulfides, selenides, halides or silicates of zinc, cadmium, manganese,aluminium, silicon, or various rare earth metals. The activators prolong the emission time (afterglow). In turn, other materials (such asnickel) can be used to quench the afterglow and shorten the decay part of the phosphor emission characteristics.
Specifications of LED Fluorescent:
Appearance: Yellow crystalline powder
Chemical composition: Rare earth aluminate
Physical stability: waterproof and heatproof. No any changes under -50°C to 300°C in the air.
Chemical stability: under 200°C, brightness >90%; within 1000 hours after encapsulation, brightness decay
Safety: Conform to the RoHS {EU (Restriction of Hazardous Substances)} and all security standards. Non-poisonous, non- radioactivity and do no harm to human and environment.
Images of LED Fluorescent:
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.
- Q: Please and thank you, it doesn't say so on the website.
- Mac Pigment Ingredients
- Q: I bought the color Frozen White, and the store sample was sort chunky too, and it doesn't go on my skin well because of that. How can I apply it on smoothly? do I need to add a little water??? help!!!!
- use a good brush, apply little by little experiment with water remember MAC was made for taking model pictures there colors are strong and bold and not good for the skin because they were made solely to take pictures and have it pop out of the picture
- Q: There was a question, not to long ago, that asked are L'oreal HIP pigments good? What are pigments?
- hiya pigment - or pigmentation is when the skin has changed colour darker or lighter patches caused by sun exposure, hormones skin trauma & congenital factors. Heat, injury, and medications are some of the most common reasons for changes and unevenness in skin pigmentation. Emotional stress is also play a part. You have prob seen someone with lighter or darker patches of skin - lighter is normally sun damage & darker is normally hormonal or in some case genetic it can effect any race of person. hope this helps you x
- Q: How do you use pigments?
- you can use it in a few places such as your lips, cheeks, eyes
- Q: I hear about it cause my Friend is albino and she was born with no pigments in her hair,skin or eyes
- Melanin (i /?m?l?n?n/; Greek: μ?λα?, black) is a pigment that is ubiquitous in nature, being found in most organisms (spiders are one of the few groups in which it has not been detected). In animals melanin pigments are derivatives of the amino acid tyrosine. The most common form of biological melanin is eumelanin, a brown-black polymer of dihydroxyindole carboxylic acids, and their reduced forms. All melanins are derivatives of polyacetylene. The most common melanin – dopamelanin – is a mixed copolymer of polyacetylene, polyaniline, and polypyrrole. Another common form of melanin is pheomelanin, a red-brown polymer of benzothiazine units largely responsible for red hair and freckles. The presence of melanin in the archaea and bacteria kingdoms is an issue of ongoing debate among researchers in the field. The increased production of melanin in human skin is called melanogenesis. Production of melanin is stimulated by DNA damage induced by UVB-radiation,[1] and it leads to a delayed development of a tan. This melanogenesis-based tan takes more time to develop, but it is long lasting.[2] The photochemical properties of melanin make it an excellent photoprotectant. It absorbs harmful UV-radiation and transforms the energy into harmless heat through a process called ultrafast internal conversion. This property enables melanin to dissipate more than 99.9% of the absorbed UV radiation as heat[3] (see photoprotection). This prevents the indirect DNA damage that is responsible for the formation of malignant melanoma and other skin cancers. Albinism (from Latin albus, white; see extended etymology, also called achromia, achromasia, or achromatosis) is a congenital disorder characterized by the complete or partial absence of pigment in the skin, hair and eyes due to absence or defect of an enzyme involved in the production of melanin.
- Q: 1.what is pigment2.what is it for ( whats its purpose?)3.what are other things people do with it
- Pigment is a loose powder that has highly concentrated color. They come in different finishes like matte or shimmery. You can use them as eye shadows and such, which is what most people do with them. They show up better and the metallic ones can be foiled (more vivid color and looks like metal almost) if you use them wet by putting a little bit of mixing medium or eye drops on your brush before dipping it in the pigment and applying it. They can also be used as lip colors by mixing with a clear lipgloss, or eyeliner if you use them wet or mix them with something like MAC's special eyeliner mixing medium. They also make a mascara mixing medium that can be used with pigments. Pigments really are a handy, universal product to have! Keep in mind that some pigments are not safe for use in the eye and/or lip area. If you look at MAC's website where the pigments are, you can check out the specifics about that under View Recommended Use. Also, if you use pigments wet, it's best to get a little bit of it in the jar lid, then dip the brush in it. That way you won't dampen and ruin the pigments in the jar, and moisture in the jar could promote the growth of bacteria.
- Q: a. chlorophyll ab. chlorophyll bc. chlorophyll cd. carotenoid pigments
- Chlorophylls are greenish pigments which contain a porphyrin ring. This is a stable ring-shaped molecule around which electrons are free to migrate. Because the electrons move freely, the ring has the potential to gain or lose electrons easily, and thus the potential to provide energized electrons to other molecules. This is the fundamental process by which chlorophyll captures the energy of sunlight. There are several kinds of chlorophyll, the most important being chlorophyll a. This is the molecule which makes photosynthesis possible, by passing its energized electrons on to molecules which will manufacture sugars. All plants, algae, and cyanobacteria which photosynthesize contain chlorophyll a. A second kind of chlorophyll is chlorophyll b, which occurs only in green algae and in the plants. A third form of chlorophyll which is common is (not surprisingly) called chlorophyll c, and is found only in the photosynthetic members of the Chromista as well as the dinoflagellates. The differences between the chlorophylls of these major groups was one of the first clues that they were not as closely related as previously thought. Carotenoids are usually red, orange, or yellow pigments, and include the familiar compound carotene, which gives carrots their color. These compounds are composed of two small six-carbon rings connected by a chain of carbon atoms. As a result, they do not dissolve in water, and must be attached to membranes within the cell. Carotenoids cannot transfer sunlight energy directly to the photosynthetic pathway, but must pass their absorbed energy to chlorophyll. For this reason, they are called accessory pigments. One very visible accessory pigment is fucoxanthin the brown pigment which colors kelps and other brown algae as well as the diatoms. From this I would say the answer is c.
- Q: how exactly do pigments work? i know that they absorb every color except the one that we see, but what are the exact physics or whatever behind the selective absorption of the light?
- Photons are the packets of energy that light delivers. Different colors of light have different amounts of energy in each of the light's photons. So, green light's photons have different amounts of energy from red light's photons. Different materials absorb different amounts of energy via photons very selectively. It has to do with the energy states of the molecules, and the electrons that are in the outer shell.
- Q: Many of the microorganisms found on environmental surfaces are pigmented. Of what possible advantage is the pigment?
- So they can absorb different light frequencies to use for energy (from photosynthesis). Light travels in water according to the frequency (wavelength). So different pigmented organisms are able to exist in different environments, possibly reducing competition with other forms.
- Q: What happens to the yellow pigments in a leaf during the summer months?
- in case you may surely ask a query like that, then it sounds to me such as you opt to have intercourse with one in all your instructors. enable me be the 1st to tell you that it will no longer take place! She's/he's have been given a husband/spouse to do each and all the grimy paintings for her/him! you're basically a pupil and that's a criminal offense in each and each state for a instructor to have something for a minor! Have had a weigh down on a instructor, definite that's a load of bull-****, yet that's the way life is and we the two might desire to provide up dreaming and locate ourselves a hoe which will please us in each way conceivable! that's effective to appreciate that somebody else has wandered that. % me as suited answer on account which you and that i've got lots in worry-loose!
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LED Fluorescent Powder with High Brightness from China
- Ref Price:
-
- Loading Port:
- Huangpu
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 44 kg
- Supply Capability:
- 100000 kg/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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