There are yellow giants and red giants and all different colours but how there aren't any green giants?

Question

Isn't it possible for super heated plasma gas to burn a greenish colour?

Answer 1

No. No blackbody (glowing hot object) at any temperature appears green. Cool objects give off MUCH more red than blue; very hot objects give off mostly blue, but intermediate objects that peak at visible wavelengths give off a range of visible colors.

Answer 2

Our eyes are sensitive to a small range of frequencies (from 400 to 700 nm). We perceive light in these wavelength in different colors: blue for short wavelength, red for long wavelengths, and green for those in the middle. A glowing body emits light of various frequencies, with a peak frequency that depends on the temperature. If the peak wavelength is green, there will be enough red and blue light that we will perceive the object as white. If the peak wavelength is ultraviolet, then we will see the longer wavelength as blue. If the peak wavelength is infrared, then we will see the short wavelengths as red. Thus, the color we see is influenced by the filtering effect of our limited sensitivity to different wavelengths. And an object glowing in the middle comes out looking white.

It is possible for a plasma to glow green, but that is because emitted by an excited gas will consist of several distinct frequencies of light, rather than broad spectrum. If one of those lines is in the green band, the plasma may appear green if there are no other bright lines that cause the eye to perceive a different color.

Answer 3

Any object that glows due to heat has a distribution of colors that includes some green. But it also includes all other colors. Cooler objects have more red and less green and blue. Hotter objects have less red and more green but also more blue. So basically things go from red hot to white hot to blue white hot. This pattern of light emission is called black body radiation. Off that the bright sun or some white hot steel in a blast furnace would be called a black body, but it is.

Answer 4

The old professor says: As objects increase temp. the shorter wavelengths of light are added to the longer ones. As the object approaches "green" emission temps, it is also loaded with all the colors below green in the spectrum, which makes it "not-green". White hot is when the temp has a good content of all the freqs. making white. The temp. of blue stars also have lower frequencies present, but not to the extent that the cooler ones have. Therefore, they will appear blue. (Wein's displacement rule)

Answer 5

william pretty much nailed it. but I hate to tell you something when it comes to color in space green is the most common color when you analyze the wavelengths. so a green star is actually a common star. (just to human eyes we seem em as white) since its a pinpoint and your eyes have a hard time discerning color from a tiny point