What do red shifts and blue shifts mean?
924822
This is something related to what is called the Doppler effect. You can experience it first hand when a police car is approaching and then going away: the sound of the siren is higher pitched when it is getting closer, and lower pitched when it goes away.\nThe same effect occurs with light.  A light emitter -- a star of a whole galaxy -- will seem to be bluer (higher frequency) if it is getting closer, or redder if it is moving away.  How much bluer or redder is called blue (or red) shift. If one knows what should be the neutral color of the light (and we do, thanks to the spectroscopic lines of emission) then the speed of the object can be derived by said amount of blue or red shift.  This is what allowed Edwin Hubble to deduct that the universe was in expansion, as most galaxies have a redshift that is greater the further they are.
326028
heat from your body\ncrystals int he mood ring are very sensitive and can alter positions at the slightest change in temp\nthis results in their reflecting differnt colors, depending on their position, or indirectly, temp \nlook at how the mood changes in correlation with the color:\n\n# Dark blue: Happy, romantic or passionate\n# Blue: Calm or relaxed\n# Blue-green: Somewhat relaxed\n# Green: Normal or average\n# Amber: A little nervous or anxious\n# Gray: Very nervous or anxious\n# Black: Stressed, tense or feeling harried
454817
the doppler effect means that if an object is moving away from us the light it is sending out is slightly more red than normal (the wave length is longer)-a red shift, if it is moving towards us the light from it is slightly more blue(wavelength is shorter)- a blue shift. Most of the galaxies we see in space are red shifted so everything is moving away from everything else. This proves that so far the universe is expanding. If gravity gets the better of us and all the galaxies begin to move in on each other then they would be blue shifted. This may well happen in the far off future- we can't tell yet, but Even if this was happening they wouldn't all meet in a 'big crunch' (the opposite of the big bang) for a few billion years so it's not really anything to worry about!
14303
It is a shift in the perceived frequency of waves by a receiver (or transmitter) in motion.  Also called the Doppler Shift.\n\nFor instance, If you were standing on the beach and for this experiments purpose, waves come in every 20 seconds.  If you walk closer to the sea, the waves hitting you occur less than 20 seconds because you are shortening the gap.  As you walk to shore, the frequency is more than 20 seconds.  If you stop, the frequency again returns to 20 seconds.\n\nSee link for better answer.  And learn how to use google.  The link below was the first response in google.
48684
C- longer wavelength.  Red is the long (low fequency) end of the spectrum, and violet is at the short end (high frequency).
52711
shift or change\nfixed or immobile\nvector
144453
symbolism... white=purity, red=bravery or blood of the fallen, or rage/action, blue=valiance, bravery, peace
1080305
As you approach the speed of light heading towards Earth you would observe things happening on Earth faster than they would appear to be happening to a person who was on Earth.  You would also see a Doppler shift in the light, so in addition to seeing things happening faster, they would also shift to higher frequencies.  Something that appeared red on Earth could appear blue to you while something that appeared blue on Earth would appear violet.  Of course the speed at which you are approaching Earth would determine how much the colors were shifted.
197523
Everyone sees everything a little differently than others.  As for colours, it's how your eyes may process light and how your brain may interpret that light.  \n\nIf you're seeing blue while I see red or vise-versa, there's a big problem because those two colors are opposites (actually red and cyan, which is kinda blue).
6999
Blue is a cooler and more calming color.  If you're selecting a color to paint your psych ward, blue would be better than red. :)
73563
Red, Blue, and Purple
451917
It was almost like a rainbow of colors, from blue to red. It was mostly blue though.
419854
claret red and light blue
62051
Bitwise shifting is taking the bits and moving them up or down a few spots in the byte.  For example, if you have the value 27, you represent it in binary as this:\n\n00011011\n\nNow shift all the bits left by two, and you get:\n\n01101100\n\nwhich is the binary equivalent of 108.  So the first thing you should notice is that we've multiplied our original value by four.\n\nIn most cases, there's no need to do this.  It is conceivable that if you have a high-performance application, shifting the bits around might get you some performance gain over multiplying a value, but more often you would use this when you want to pack several values into one location.  Suppose you have a word (four bytes) and you want to store a color value with red, green, blue, and transparency values, each of one byte, in it.  One way you could do it is like this:\n\nword w1 = alpha << 24;\nword w2 = red << 16;\nword w3 = green << 8;\nword w4 = blue;\n\nNow we have each of our bytes in the correct position in a word, all by itself.  So to store them all together in a single word, we just have to OR our new values together:\n\nword result = w1 | w2 | w3 | w4\n\nNow you have all your RGBA values stored in result.
1005703
By the red shifts of the measurement. Or to make a short story long it's the displacement of features in the spectra of astronomical objects, such as galaxies and quasars, towards the longer wavelengths, generally interpreted as a result of the Doppler effect due to their recessional velocities (i.e. how fast they're moving away from something) The expansion of the universe means that all but the nearest galaxies have redshifted spectra (in fact this is what led to the discovery of the expanding universe back in the 1920's). Hubble first described this back in 1925 that the redshift or recession velocity of a galaxy is proportional to the distance in relationship with the viewer. All that means is that by this redshift they were able to approximate the distance of these galaxies, and since they had these distances they could state them in light years (since light years is a distance, not necessarily a time)
461959
It is blue when the blood does not have oxygen in it.  Once blood is drawn though, it hits the oxygen and turns red.
110147
.   Frequency shift keying has a better signal to noise ratio than on off keying. One frequency indicates that the signal is "on" and the other frequency indicates that the signal is "off". Since both frequencys are close together a noise pulse will affect both frequencys and therefore cancel itself out. \n.   Frequency shift keying is used to send teletype and can also be used to send radio control signals.