posted by Ella .
If you see a red-hot star, you can be certain that that its peak intensity is in the ingrared region. Why is this? And if you see a violet-hot star, you can be certaiin its peak intensity is in the ultraviolet range. Why is this?
The human eye is not very sensitive to red or violet. So if you see red or violet as the predominant spectrum, its intensity is very high.