i believe it would be purple
The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.
The amount of radiation changes across the spectrum.
I'm sorry I don't really know much about this, but I do know that the suns spectrum DOES change though out the course of the day
It is related to the black-body effect, where an object appears black (it absorbs the full visible spectrum of light) at room temperature but it starts emitting visible light when its temperature is rising (the coal is burning). The hotter the lump of coal, the more the light you see will be toward UV, unless the coal is consumed.
The change is not visible to the human eye
Yes , there may be , because human visible range is between 400nm to 700nm wave length of spectrum,if we change our visible range then we can observe several new colors, but question is how.
The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.The name "redshift" comes from the fact that when the energy of light decreases, the lines of a spectrum, for visible light, will change, or shift, towards the red end - the low energy end. This term is really only appropriate for visible light, but it is generally used for a decrease in energy. In infrared light, a reduction in energy will actually shift the spectrum AWAY from red, but the term "redshift" is still used in this case.
Line Spectrum
The Ku band of microwave frequencies ranges from 12 to 18 GHz. A frequency of 1GHz is not in the Ku band. There is no correspondence. Is the 1GHz setting on the spectrum analyzer a center frequency? Or is it one of the ends of the spectrum analyzed? Is it the width of the spectrum being analyzed? And if it is the latter, what is its center? Knowing these things will still not change the answer given, but may help to "sort out" a possible problem with the question the way it is written.
as a surface heats up the wave lengths of energy emitted by the surface shorten. If the surface gets hot enough the wave lengths generated will reach the visible spectrum starting at the longer wave lengths eg red and as the surface gets even hotter the wave lengths shorten even more heading towards the white and blue end of the visible spectrum.
change
The amount of radiation changes across the spectrum.
The EM spectrum is a continuous uniform range/domain that has no inherent internal or external boundaries. All delimitation are artificial constructs imposed upon it by man. If you wish to talk about any EM range you agree to definite it for discussion. It does not exists as a natural phenomena.
the spectrum change with direction, either from you or away
The main visible pathological change is that the vesicles enlarge.
The HST uses EM waves to find things through echolocation or firing a beam of EM waves (or sound) at objects and seeing what a planet or star has done to change the light. Ultrasound works this way.
There are more than seven but only seven are visible. They are red, orange, yellow, green, blue, indigo, violet, and the one that cant be seen is ultra-violet.