How does the same bulb glow in different colours???????

Question

the little bulbs in my christmas tree glows in different colours and i'm sure that there is only one bulb

Answer 1

Well, traditional incandescent Christmas tree bulbs get their color from the glass surrounding a tiny wire that's glowing white.

Newer Christmas lights however may use small crystals called Light Emitting Diodes or LEDs. With LEDs the color comes from the LED itself NOT the case surrounding it.

Because the actual crystal diodes making the light are so small, it's easy to put more than one in the same bulb.

So, for example, if I put a red and a blue glowing diode inside the same bulb, by controlling which crystal (diode) gets power I can make the bulb glow red or blue.

I can even get fancy and turn them both on, which I think would look purple. OR Generate a variety of shades between red & blue by giving one diode more power than the other.

It's actually the same pricipal your computer's monitor uses. If you put a good magnifing glass up to a white screen, you will see it's actually made up of small dots of 3 different colors. By controling the power ratios to 3 different color dots I can generate ANY apparent color, which is what your monitor does.

Answer 2

Some small plastic Christmas trees use a single incandescent light bulb in the base and transmit light to tiny bulbs on the tree using fiber optic cables (glass filaments that conduct light). A rotating disc with a few colored gels (color filters) causes the color of light in the base to change at the tiny bulbs.

Answer 3

The gases won't produce the colours you like in an open to the ambience situation. actual all yet mercury are inert gases and could no longer react with different aspects different than under very specific circumstances, so as that they are all sealed up in glass tubes under low rigidity. At each end of such tubes is a twine sealed interior the glass yet projecting slightly into the interior the tube. Then the wires at the two ends of the glass tube is hooked as much as a very intense voltage transformer, say approximately 25000 volts, and an electric powered cutting-edge flows in the process the low rigidity gas contained in the tube, thrilling the atoms so as that their electrons swell up as they take in potential, then launch mild as they electrons fall lower back to their unique positions. the colour you get relies upon on the variety of electrons in each atom of the gas and their skill to take in and launch potential . The mercury vapor would not positioned out plenty visable mild, quite often ultraviolet which we won't be able to see, so the interior the tube is roofed with compounds containing phosphorous which converts the UV mild to visable white mild, as a result the fluorescent mild bulb.

Answer 4

I am guessing that the bulbs are LEDs. These will have the ability to make any color without colored glass or plastic. It is similar to how your computer monitor makes colors.

Answer 5

The "bulb" may consist of 2 or more LED's.

Answer 6

they are LED's, not incandescent bulbs, that usually glow one color.