2006-07-11 03:35:26 · 7 answers · asked by cool victor 1 in Science & Mathematics ➔ Chemistry
"Pure neon without phosphors will produce a fiery red color. "
The 2nd link is an especially good site.
Lynne L- I hope you teach your students better chemistry than what you write here. The many colored lumination from neon lights is NOT due to other gases , but phosphors coated on the glass. The links below explan it further.
2006-07-11 04:20:58 · answer #1 · answered by Iridium190 5 · 0⤊ 0⤋
Neon is used to make neon lights. Neon lights are the common orange-red ones. A fluorescent bulb is filled with neon and an electrical current is run through the gas. This added energy excited the electrons in the neon. When the excited electrons lose the additional energy, they emit the energy in the form of light. Different elements emit different spectra. Consider a rainbow, which contains all the possible colors in visible light. Neon does not emit all of these colors; the colors that it does emit combine in such a way that it appears to be red-orange to the naked eye.
Check out this picture: http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/atspect2.html.
Note that the other colors in "neon" lights are not produced by the gas neon, but some other gas or combination of gases.
2006-07-11 06:20:35 · answer #2 · answered by Lynne L 2 · 0⤊ 0⤋
Inert gas (the right colomn on the Periodic Table) tubes require a significant amount of electricity (about 50,000 volts) to excite the molecules into shedding electrons. The energy released by the shedding of electrons produces the light (and heat) of the tubes. Once the molecule loses its electon(s), it grabs the next one that comes along, in effect reloading itself for its next electron shedding.
The limit for the length of these tubes seems to be about 6 feet. Any longer and the glass gets too hot and melts. The long runs of tubes that you may see decorating a restaurant or casino are strings of 6-ft tubes tied together, and fed by multiple transformers.
Neon produces red-orange light
Helium produces purple light
Argon produces green light
Radon produces deep red light
Krypton and Xenon produce colors too, I just don't remember which colors.
Other color possiblilities are yellow, white, pink, blue, and true orange. These colors can be attained through a mixture of gases.
2006-07-11 15:28:13 · answer #3 · answered by jogimo2 3 · 0⤊ 0⤋
d sitting on d ne 4 d l33t children?
hmmm... ok.. neon .. as you already know.. is used in neon lights..
the bulbs can be many colors... hmm... perhaps the different colors are produced by other gases in the light tube.. or by the coating on the inside of the neon light..
the neon gas gives off radiation when it is electrified in the neon light tube... this radiation is used to fluoresce a coating on the inside of the tube.. giving off the many different colors we see in neon lights.
2006-07-11 03:43:08 · answer #4 · answered by ♥Tom♥ 6 · 0⤊ 0⤋
Neon is an inert, colorless gas that is present at all times in minute amounts.
When an electric current passes through concentrated neon gas, it gives a bright red glow.
2006-07-11 03:43:07 · answer #5 · answered by MeteoMike 2 · 0⤊ 0⤋
neon is what lights the pretty signs. it's cheap and lasts a long time. the bulbs are tubes and are whatever color glass they are.
2006-07-11 05:40:15 · answer #6 · answered by shiara_blade 6 · 0⤊ 0⤋
they make sign boards with the help of neon and i dont no the color of it..
2006-07-11 03:38:45 · answer #7 · answered by sivaranjani s 2 · 0⤊ 0⤋