LED Fluorescent Powder with High Brightness from China
- Ref Price:
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- 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: (Explain what happens when a pigment molecule is struck by electromagnetic radiation in the visible light spectrum.)
- pigments are molecules that absorb electromagnetic radiation. For example, the chlorophyll pigment in plants absorbs blue and red light, which is why they reflect green light (since green is the color not absorbed). Another example is melanin, which is the pigment that darkens the skin of people. Melanin absorbs UV to protect the skin. A pigment molecule struck by EM radiation in the visible region may absorb some of the light depending on what pigment it is.
- Q: I know the difference between the two, but which do you prefer? Which has a better color payoff? And, which do you own more of?
- Pigments definitely have a better color payoff, but the big 7g (I think) jars are pretty much a waste of money because there's no way you'll use all of it...ever. I'd go with purchasing piggie samples and then buying full size jars in the colors you love. Eye shadows are also good and have much less fall out because they're not loose. But it's hit or miss with Mac, I think. By no means is it the best makeup line out there. Make Up For Ever is a better investment for highly pigmented shadows and piggies. They're worth every cent.
- Q: What does it mean when something is highly pigmented?
- PIGMENTED = A HIGH SATURATION OF COLOUR
- Q: hi:]i need the right order to apply skin pigments...
- Pigments are usually packaged in a finely milled loose powder form. After cleansing , toning and moisturizing,let the moisturizer absorb in the skin. Apply the skin pigments using a large compact powder brush/kabuki brush in a circular motion on face neck, then apply a second layer in a downward motion. Then use Evian water Mister to set the pigment. For eye pigments, put a thin layer of skin pigment first, then apply the eye pigment using a oval shaped dome brush
- Q: what is pigment?
- a pigment has some kinds like biological pigment and arsenic pigment. i dont know much about the arsenic pigment. i would just tell something about the biological pigment. in biology, pigment is any material resulting in color of plants or animals cells. many biological structures like eyes,fur,hair and skin contains pigments like melanin in specialized cells called chromatophores.
- Q: I got this question from my A2 Biology but I can't find the answer. Does anybody know?
- primary pigments are the ones the electron involved in photosyn. goes to AFTER hitting the accessory pigs. in order to be sent to the electron transport chain. this is the case with photosystem 2 AND 1, they look like this: kvhs.nbed.nb.ca/gallant/biology/photosystem.jpg the green are accessory, and the blue is where the primary are. hope that helps...im a little rusty since i took AP bio last year.
- Q: We see pigments everywhere in products. They make a variety of things we see today. Where does it come from? Do they actually take a red rose pedal, grind the color and designate it as the color red?
- Color is made from a variety of methods.
- Q: light absorption, which pigments are involved?
- All photosynthetic organisms contain one or more organic pigments capable of absorbing visible radiation, which will initiate the photochemical reactions of photosynthesis. The three major classes of pigments found in plants and algae are the chlorophylls, the carotenoids and the phycobilins. Carotenoids and phycobilins are called accessory pigments since the quanta (packets of light) absorbed by these pigments can be transferred to chlorophyll. Chlorophylls chlorophyll a - present in all higher plants and algae chlorophyll b - present in all higher plants and green algae chlorophyll c - diatoms and brown algae chlorophyll d - red algae (chlorophyll a is present in all photosynthetic organisms that evolve O2.) Chlorophyll molecules contain a porphyrin 'head' and a phytol 'tail'. The polar (water-soluble) head is made up of a tetrapyrrole ring and a magnesium ion complexed with the nitrogen atoms of the ring. The phytol tail extends into the lipid layer of the thylakoid membrane. Carotenoids (carotenes and xanthophylls) Carotenes: -carotene - higher plants and most algae $-carotene - most plants some algae xanthophylls: luteol, fucoxanthol and violaxanthol Carotenoids contain a conjugated double bond system of the polyene type (C-C=C-C=C). Energy absorbed by carotenoids may be transferred to chlorophyll a for photosynthesis. Phycobilins (found mostly in red and blur-green algae): phycoerythrin phycocyanin allophycocyanin )
- Q: the absorption spectrum and the range of light reflected by each
- three major pigments are 1.chlorophyll a 2.chlorophyll b 3.carotenoids chlorophyll a is the major pigment,chlorophyll b n carotenoid are the accessory pigments which help in absorption of the incident light of different wavelengths. another pigment xanthopyll-fucoxanthin is also present in some plants
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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
OKorder Financial Service
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