Can I paint regular light bulbs and use them as colored lights? ?
I am having a new years party, and I want to have colored lights. like, lights to put in lamps, and things. So can I just paint the outside of the bulb, or will it get too hot? what kind of paint?
Can i color a light bulb blue?
i have a blue scrap booking marker and i was wondering if i could use it to color a 7 watt light bulb blue. the reason i want to do this is because i bought a fish tank and on the side of the box it has a picture of the tank all decorated and it looks like the water is blue and i want mine to look like that. so would it be okay? the light wouldn't be on more than half an hour a day and there's a window in the room if that makes any difference. and i don't have the money to go out and buy ornaments or blue Saran wrap or anything.
Can i paint a light bulb with acrylic paint?
Not a very safe thing to do on several counts: 1) acrylics are a plastic material mixed with finely ground pigments, both of which are subject to changing when exposed to prolonged heat and all light bulbs get hot, even the lower watt ones such as nightlights. The only ones that stay cool to the touch when in use are the LED ones like on Christmas trees and they still get warm. That could/would be a fire hazard as well as potentially releasing toxic fumes from the plasticizers/paint pigments (cadmium, manganese, possibly even lead depending on where the paints were manufactured and what pigments they contain) 2) the opaque colors would block light and what you would have would be not much. There are markers that are made for glass with transparent pigments and heat resistant. These would be preferable to acrylic paint for that project. Here is a youtube video on marker-painting light bulbs. http://www.youtube.com/watch?v=kvp9tBaQW...
Will Christmas lights against sheer fabric catch fire to/burn the fabric?
I wouldn't do that with incandescents but LEDs would be fine. They can be on for hours and never get even warm to the touch. They also use a lot less power and come in wonderful variety of shapes and colours these days. I have some star shaped ones that are gorgeous. Run out and buy them now before the stores run out of the good ones.
Why does black colour absorb light while white colour reflects light?
White reflects all wavelengths diffusely (the reflected rays go every which way). Silver (e.g., a mirror) reflects all wavelengths specularly (the reflected rays bounce off nicely).Now, metals do not necessarily always look like mirrors - they are often bumpier than that, so their reflection is a little bit diffuse as opposed to totally specular.Reflection of all wavelengths can be explained by band theory, which assumes that overlapping energy levels form bands. In metallic substances(Silver,white color) empty conduction bands can overlap with valence bands containing electrons. The electrons of a particular atoms are able to move to a higher-level state, with little or no additional energy. The outer electrons are said to be "free," and ready to move in the presence of an electric field. The highest energy level occupied by electrons is called the Fermi energy, Fermi level, or Fermi surface.Above the Fermi level, energy levels ar empty (empty at absolute zero), and can accept excited electrons. The surface of a metal can absorb all wavelengths of incident light, and excited electrons jump to a higher unoccupied energy level. These electrons can just as easily fall to the original energy level (after a short time) and emit a photon of light of the same( considered) wavelength.Black thing that absorbs incident electromagnetic radiation. Sometimes it's about chemical, via a variety of processes such that the electrons are excited by the light and eventually re-emit it in a non-visible wavelength.Black body is white body !!!sometimes white body appears as black body and black body appears as white body. A black-body can absorb all the radiation falling on it(light at all wavelengths) and appears black when cold. When it gets heated it can emit radiation at all wavelengths like a heated piece of metal. The hotter it gets the higher the photon frequency (energy) and so a shorter wavelength. Hotter objects emit more total radiation per unit surface area. This is not the same as photon absorption and emission of normal electron arrangements that fall within certain energy levels. As a black body heats up the electrons get more and more excited like a light bulb. At first red light and then the full spectrum. As all the colors mix it goes from red to orange to white. You don't see the greens and blues because they mix.
What light bulb allows the body to produce vitamin D?
In the very first place, it is not recommended to top up your vitamin D using light. There are risks associated with the light as it can cause skin cancer and the lamps are costly. Taking vitamin D orally is much more affordable (especially in the short term), much easier, takes less time, is harmless and moreover more effective. If you still want to use light, you will need a lamp that produces UVB radiation. This is "light" outside the visible spectrum, on the blue side of the rainbow if you like.Pick a lamp that radiates the entire spectrum though, because that way your eyes will naturally look away from it and you avoid eye damage. You can verify if the lamp radiates the entire spectrum: the light should look "white" and not like "black light". Or wear UVB absorbing glasses.Do not overdo. If your skin is slightly pink the next day, that is about the maximum recommended exposure. This tanning is not from the UVB but from the UVA, the radiation in between UVB and visible light. Just use it as a reference as for the dosage of light and UVA/UVB you expose yourself to.And if you want to use UVB lamps above your bed or sofa do cover the fabrics / textiles... Because they fade in the UVB light!The lamps sold for vitamin D purposes are very expensive... Marketing.If you buy a lamp that is made to create lighting for reptiles, you get the same light spectrum... Much more affordable. Look for metal halide lamps with an integrated ballast.Good luck!Rogier
What kinds of paints are safe to paint light bulbs with?
Although a previous contributer makes a valid point about paint acting as an insulator, overheating and shattering the bulb…. I have never had any problems with painted bulbs. Perhaps I shouldn't be admitting to this, considering I own a lighting company.Granted, I'm not dipping 100w incandescent bulbs in a bucket of Rustolium One-Coat Primer, but I've painted LOTS of bulbs with LOTS of enamels over LOTS of years…and never had one explode or die early on me. In fact, I have a rainbow assortment of spray paint that specifically lists lightbulbs as one of the things you should paint. It's a tint for making colored glass. However, it's thick and it's durable. Perhaps thicker than the enamels I normally use.Just don't ever drip alcohol onto a hot bulb. Yikes!