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What else can I help you with?
What is a red shift and what does it mean for a star?
It's a change (decrease) in the frequency of the light we receive from the star. Equivalently, an increase in the wavelength. It usually means the star is moving away from us, though it might also be caused (usually to a lesser extent) by the star's gravitation.
What does red mean in a rainbow?
Red is the color that appears first in a rainbow, on the outermost arc. It has the longest wavelength of all the colors in the visible light spectrum.
How does a red shift indicate that the universe is expanding?
nice question! actually when a wave approaches an observer the wave length of the wave decrease and as it move far from us its wavelength increase. it is quiet difficult to understand so use your imagination. as the wavelenght increase the spectrum will be shifted toward red spectrum and thus called red shift. when Edward Hubble studies spectrum of different star he noticed that because of some color spectrum were missing, other spectrum got shifted to ward red. it it moved toward red then that mean that wavelength was increasing and if wavelength increases then that means light moves away from us and thus he concluded that each and every star and galaxy was moving away from each other
Is Orion in the milky way?
Although Orion is really close to the Milky Way, Orion isn't in the Milky Way. Just for the same of clarity: if you mean the Milky Way galaxy as opposed to "that band of diffuse light in the sky," every star bright enough for you to see individually is in the Milky Way galaxy.
Your nearest neighbor galaxy?
The nearest neighbor galaxy to the Milky Way is the Andromeda Galaxy, also known as M31. It is located about 2.537 million light-years away from Earth and is part of the Local Group of galaxies. Andromeda is on a collision course with the Milky Way and will eventually merge with our galaxy in about 4.5 billion years.
Which color will have the longest wavelength which corresponds to the lowest energy?
Red
What does 532 wavelength mean in laser?
A laser with a 532 nm wavelength refers to a green laser beam. The number 532 nm indicates the specific wavelength of light that the laser emits, measured in nanometers. This wavelength is in the visible spectrum of light and is commonly used in applications such as laser pointers, laser light shows, and scientific research.
Which wavelength of light has the lowest frequency?
Assuming you mean visible light, that would be red light.
Is all light the same size?
Well light doesn't have a size if you mean frequency or wavelength or even how much light the object releases then no they don't.
How log could it take light to travel to earth from the android galaxy?
I assume you mean M31, the Andromeda Galaxy. It is approximately 2.5 million light-years from us; that means that it takes light 2.5 million years to travel from there to here (or from here to there).
What is the wavelength of a light with a frequency of 7.12 x 1014-Hz?
speed of light (c) is equal to the wavelength x the frequency. You can use 3x10^8 m/sec as the speed of light (c) and and solve for wavelength. I would do it here, but I'm not exactly sure what you mean the frequency to be. It has too many sig. figs. to make sense. Unless you mean it to be 7.12 times 10 to the power of 14 (???). If that's really the correct frequency, then just plug it into the above equation and solve for wavelength. It will come out in meters.
What light rays have the longest wavelength?
The longest wavelength photon I could find out about was in a maser (microwave version of a laser) which uses emission between two hyperfine levels of atomic hydrogen. This had a frequency of 1.4 GHz and a wavelength of 21cm.
What is the wavelength of light waves?
If you mean visible light, that is between about 380 and 780 nm, depending on the color of the light. nm means nanometer - 1 nm = 0.000 000 001 meter. In other words, the wavelength of visible light is slighty less than a micron.
What does 925 NM mean?
925 NM likely refers to the wavelength of a light or electromagnetic wave, specifically in the near-infrared range. The "NM" stands for nanometers, which is a unit of length commonly used to describe the wavelength of light. In this case, 925 NM would indicate a wavelength of 925 nanometers.
How far is the Andromeda?
Andromeda Galaxy is 2.52±0.14 million light-years from Earth.
What does the nm in 650nm laser diode mean?
"nanometer" or billionths of a meter. 650 nanometers is the wavelength of the light produced by the diode.
What is the wave speed of vissible light?
"Wave speed" is meaningless. Do you mean wavelength? That's roughly 400-700 nm.
