0
What else can I help you with?
What is galaxy redshifted?
Galaxy redshift is much light the Doppler effect. If a galaxy is traveling away from us, the light that it emits and is seen by us is stretched out (the faster we are separating, the stronger the redshift), that means that the wavelegnth is stretched a bit, shifting the light towards red.
What is the relationship between mass to its color for a star?
The color of a star is related to its temperature. More massive stars are typically hotter and appear bluer, while less massive stars are cooler and appear redder. This relationship is described by Wien's law, which states that hotter objects emit more blue light and cooler objects emit more red light.
What is a cluster of tightly packed of older stars called?
A cluster of tightly packed older stars is called a globular cluster. These clusters can contain thousands to millions of stars, and are usually found in the outer regions of galaxies.
Compare the colors of spiral galaxy with the colors of elliptical galaxy?
Spiral galaxies tend to have blue colors due to the presence of young, hot stars that emit blue light. Elliptical galaxies, on the other hand, are typically redder in color because they contain older stars that emit more red light. This color contrast is a result of the different star formation histories and compositions of the two types of galaxies.
How are temperature and color in stars linked?
The hotter they are, the bluer they are, the cooler they are, the redder they are.
Why are elliptical galaxies redder than disk galaxies?
Actually, it doesn't matter what kind of galaxy it is, because it depends on what kind of stars are in it. If a galaxy has a lot of red giants, it will appear redder than a galaxy with mostly blue-white stars. Older galaxies might be redder than younger galaxies due to the fact that older stars appear redder.
Interstellar reddening is caused by what?
A downward shift in frequency of radiation (perceived as reddening in the visible spectrum) is observed in most stars outside the Milky Way Galaxy. This red shift is assumed to be caused by the stars moving away from our galaxy at a sizable fraction of the speed of light. This shift is similar to the Doppler effect in sound.
How does the color of light relate to its frequency and wavelength?
The color of light is determined by its frequency, with higher frequencies corresponding to bluer colors and lower frequencies to redder colors. Wavelength is inversely related to frequency, so shorter wavelengths correspond to higher frequencies and bluer colors, while longer wavelengths correspond to lower frequencies and redder colors.
Comparative of red?
redder, reddest
Why do red blood cells become brighter when they reach the lungs?
They appear redder because they have picked up oxygen at the lungs.
What is comparative and superlative degree of red?
redder, reddest
How can the Doppler effect determine if things are moving towards a distant galaxy or away from one?
Light had properties of frequency that related to colour. It is apparently contract in the direction moving toward the observer (higher frequency-short wavelength) and apparently elongated in the direction moving away from observer (lower frequency-high wavelength). What moving toward us is tend to be look more blue than usual (blue shift) and what away from us is redder than usual (red shift).
Does light vary in frequency?
Yes, light can vary in frequency. Frequency is directly related to the color of light, with higher frequencies corresponding to shorter wavelengths and bluer colors, while lower frequencies correspond to longer wavelengths and redder colors. This relationship is described by the electromagnetic spectrum.
How does red shift provide information about the speed of galaxy?
Let's begin by analogy with sound waves. You may have stood by a railroad crossing while an approaching train was sounding its horn. As the horn passes you, you'll note that the pitch of the sound (= frequency of the sound wave) changes to a lower tone. What's happening is that, as the horn approaches you, it moves a bit closer to you as it emits each peak of the sound wave's frequency, thus crowding the peaks of the waves closer together and increasing the frequency, which your ear hears as a higher pitch. As the horn moves away from you, the opposite happens -- the horn moves a bit farther away as it emits each peak of the sound wave, thus stretching out the frequency and presenting a lower pitch to your ear. Light waves do the same thing; it's just that the speeds required to make a significant change in the frequency of the light wave (= the color of the light) are much higher than with sound. As an object emitting light approaches, the frequency of the light is higher than it would be if the object was at rest relative to you -- and the frequency of the light is lower than the rest frequency if the object is moving away. Since blue light has a higher frequency than red light, frequency increase is referred to as "blue shift" and frequency decrease is called "red shift", regardless of the actual colors of light involved. So even radio-frequency waves can be "redshifted". How can this be measured? It turns out that each chemical element emits its own pattern of very specific, narrowly-defined frequencies of light when heated to incandescence. We can measure those frequencies in a laboratory, and then compare them to the frequencies that we actually measure from those same chemical elements in the light coming from a galaxy (hydrogen, for example, has a strong and easily-recognized pattern of frequencies). Knowing what the frequency was in the laboratory, and measuring the frequency as it comes from a galaxy, gives the numbers we need to plug into a formula to calculate how fast the galaxy is moving along the line of sight from us to the galaxy. If the galaxy light's frequency is higher (blue shift), the galaxy is moving toward us -- the amount of the difference between the laboratory light and the galaxy light frequency tells us exactly how fast. Similarly, redshifted light from the galaxy (by far the more usual case) tells us how fast the galaxy is moving away from us.
Is redder a word?
Yes, as in "After being in the sun, his skin was redder than before."
What is the meaning of 'redder in nood' in English?
'Redder in nood' is Dutch. It means 'lifesaver'.
When was Theodor Redder born?
Theodor Redder was born on 1941-11-19.
