What element produces a green, orange and violet illumination at unique wavelengths?
454489
i do not know about an element but u do get dyes which will emit in the wavelengths u mentioned if excited by UV.
43543
orange = 610 nm (Nano Meters) Wave Length\n\nSqaure root of 610 nm = 24.698 nm = Ultra Violet
1146629
Visible light is within the electromagnetic spectrum.  This spectrum consists of different frequencies such as microwaves, visible light, gamma rays, laser, etc.  Visible light is just a band width within the electromagnetic spectrum that humans can detect with thier senses.  ROYGBIV- red, orange, yellow, green, blue, indigo, and violet.  These are the colors that are detectable by humans within the electromagnetic spectrum and make up the visible light that we see.
30961
Since the spectra of a given element shows a discrete number of color bands (rather than a continuous specturm), and since the color of light relates to its energy, and since photons are released by the relaxation of electrons from a higher to a lower energy state, it follows that the gaps between energy levels are distinct and finite.  This means that the energy levels are quantized.
979836
All elemets will give of colors when excited enough. Some take extremely high energy. Elements can be idntified by these colors. Some elements give off their colors easily, such as the metals in column 1 and 2 and copper. When placed in a flame the outer electrons jump to a higher energy level and when they fall back they fall a specific distance or wavelength. . We see it as the color we perceive.
681686
Na emits light at a primary wavelength of 589.0 nm (plus at a couple other wavelengths).  This light is a characteristic orangey-yellow, and is what makes street-lamps the colour they are, since many of them are sodium lamps.
854178
Uh, I'm not smart on this, so I'm guessing here, but...\nSince different frequencies and wavelengths are what determines what color is being reflected, there has to be some way to quantify the amount of each in different hues of different colors.  Does that even make sense?  I don't know...
840309
I know that different colors are "visible" at different wavelengths.  So, depending on an increase/decrease in energy, you would be at varying wavelengths?
134329
Leaves look green because they reflect green light. So at this, and nearby, wavelengths very little light energy is used to synthesise sugars (& starch).\nThe most effective wavelengths are therefore at the 'red end' of the spectrum or the 'blue end'. As it happens it is light at the 'red end' that is most important.\n\nThis info. would make a nice line graph - you could look up either absorption spectrum or action spectrum to get a precise answer for your question.
29546
Actually a rainbow contains the entire visible light spectrum. Our words and terms for individual colors is (somewhat) arbitrary.\n\nThere is nothing inherent in physics of color or our eyes why, for instance, light with a wavelength around 470 nanometers should be a distinct color (in this case blue). It seems like a strange idea, because our use of language cements the notion that these colors are somehow special when compared to light at intermediate wavelengths.\n\nTests have been done with children of different cultures to see if there is some hardwired circuitry in the human brain to identify distinct colors the same way. In other words, we see red, blue, green, but does another culture see (what we call) purple, blue-green, and yellow-orange as their primary colors?\n\nAs an aside it is interesting to note that ancient Greek and Roman texts, for instance, tend to have a lot fewer color terms than modern works of literature. \n\nAn early test in the 19th century where anthropologists did the ask-kids-color test suggested that in other cultures people tend to pick out colors from the base set of 11 in English (red, yellow, green, blue, brown, purple, pink, orange, black, white, and grey) - suggesting that there is something to the idea that these colors are hardwired into the brain.\n\nOn the other hand, at least one more recent study found the opposite - that when shown a selection of hues children from another culture did not pick out the 11 English terms as special or primary.\n\n(Later of course the system gets refined, as physics lets us know how to combine colors in different situations. That is, once you pick "blue" as one of your special colors, then physics demands that the other primary colors are red and yellow. But it is not unique. If you start with purple then blue-green and yellow-orange are the other primary colors.)\n\nBut, regardless of whether or not some colors are hardwired into the brain, a rainbow shows a continuous spectrum across the visible light range and beyond - extending slightly into the infrared and ultraviolet regions.\n\nSo, the reason why a rainbow has the 7 primary colors is that these are the ones which we have identified and named as being "special."
442218
Crystal Violet \nIodine Solution  \nEthanol\nSafranin \nWater \n\nGram -ve = pink\nGram +ve = purple
914941
I'm not too sure, but I would assume that it's green (532 nm), which is the most visible color for most humans.
279499
If you mean wavelengths, they vary widely from radio waves (at the low end) up to x-rays and gamma rays (at the high end).\n\nIf you mean "what are the wavelengths of VISIBLE light" here are their wavelenghts in nanometers (nm):\n\nred ~ 625-740 nm \norange ~ 590-625 nm \nyellow ~ 565-590 nm\ngreen ~ 500-565 nm \ncyan ~ 485-500 nm \nblue ~ 440-485 nm \nviolet ~ 380-440 nm
710202
You are right! Atomic structure has everything to do with what wavelengths are absorbed, and which ones are reflected. I works with light, and it works with radio waves... Thats how they make stealth aircraft. Funny thing about copper... when powdered and burned, it makes a pretty green color!
279167
colour of a ion is due to the presence of unpaired electrons in the d-orbital of the element.the unpaired elecron jumps from one energy level to another ,releasing energy in the form of visible radiations or visible light..the colour is decided by the wavelenght or frequency of these radiations which in turn is decided by the energy emitted it is given by the relation E=hv whr h=planks const. and v= frequency
50431
the visible light spectrum is from about 400 nm to 700 nm. it is continuous, so you can't really count the spectrum(s). it starts from blue (400) moves to green, yellow, orange, red, far red.
570696
It´s 10. Neon. \nIt has two energy levels, filled with 2 and 8 electrons respectively.