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are smaller stars brighter?
No. Larger stars are generally brighter. Blue giants are the brightest stars while red dwarves are the faintest.
How can a red giant become brighter if it now has a lower surface temperature?
how can a red giant star become brighter if it now has a lower surface temp
Is red and blue brighter than green and blue?
The same intensity of red light, green light and blue light would have the same "brightness" as measured by a light measuring device (known as a photometer). But, there are two complicating factors - firstly the fact that light doesn't come from a perfectly pure source, but instead from a lightbulb or from the sun; and secondly that we don't have a perfect system for measuring light, but instead the human eye-brain system. Lets look at both of these separately: -Sources of light: Light usually comes from sunlight or from artificial light such as a lightbulb. These have a maximum intensity (maxiumum brightness) in the yellow range, which means that they usually produce brighter reds and greens than blues. But this depends on a number of factors. Noon day sun near the equator is usually much brighter, and also much more yellow. Further north, more red and green light gets dispersed, and so light appears both less intense and also more blue. Near the north or south pole blue will be much more intense than at the equator. -Your eye-brain system. You have sensors in your eyes that are sesnitive to colours known as "cones". They are called S, M and L cones. S are sensitive to violet, blue and green colours (and are often called blue cones), M cones are sensitive to a range of colours from greeny blue through to orange (and are often called green cones), and L cones are sensitive to a range of colours from greeny blue through to deep red (and are often called red cones). There are far far more M and L cones (which are mainly sensitive to red and green light) than there are S cones (which are sensitive to blue light). In fact less than 5% of your cones detect blue light. Your brain tries to compensate for this by making the blue appear just as intense in your "minds eye". However, be aware this is a sort of "brain trick" to compensate for the lack of blue detectors. For this reason, your eyes can see red objects much more clearly than other colours. As to your question "Is red and blue brighter than green and blue?" It doesn't have a clear answer. If you mean, is the total intensity of light measured by a scientific light measuring device (a photometer) when you add red and blue light greater than that of adding blue and green light then the answer would be no, the brightness would be the same. But the terms "red", "blue" and "green" are subjective anyway, and defined relative to human experience. So if you mean would a person have a subjective experience of seeing red and blue more brightly then green and blue, then sure that's certainly a possibility, particularly given the ambiguities in your question. For example, if you were to paint red, yellow, green and blue lines onto a piece of paper and look at it under natural daylight conditions, you could well see the yellow as brighter as the sun given off a peak intensity in the yellow region of the spectrum. So overall I would say the answer is "it depends what you mean, but in general terms, no they are equally bright"
What are the colors of the stars in the eridanus constellation?
blue and red blue and red
What color do you get when you mix red and blue light?
Red+blue = purple
are smaller stars brighter?
No. Larger stars are generally brighter. Blue giants are the brightest stars while red dwarves are the faintest.
Why is the pulmonary artery depicted blue?
It carries deoxygenated blood which is depicted blue to differentiate it from oxygenated blood which is a brighter red.
How do you make skin tones brighter when painting?
you mix white and red or if you dont have any red use blue or black and white if you dont have white use blue and red and tat is how u make brown
How are temperature and color related?
The hotter something is the brighter it gets. it starts at red, to orange, to white, to blue white
What is the song on the Blue Cross Blue Shield commercial that goes Brighter than sunshine?
Aqualung, "Brighter than sunshine". Aqualung, "Brighter than sunshine".
What does the blue mean on the America flag?
There is no true meaning to the blue on the American flag. Betsy Ross added the blue to make the stars brighter. The original flag was read and had red stars.
Does blood turn red when it touches air?
Blood is always red when it's inside your system. Unoxygenated blood is a darker red while oxygenated blood is brighter, but it is never blue.
What color is brighter - red or gray?
Red.
Is scarlet red brighter than red?
yes
Are blue eyes brighter in the sun?
Blue eyes are usually bright in appearance. They may appear even brighter if you see them in the natural sunlight.
What color does oxygen make the blood turn?
Hemoglobin, when united with oxygen, turns bright red.
What is the difference between royal blue and blue?
Royal blue is a shade lighter and brighter than blue.
