Boiledbeans

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March 21, 2011

Slow down

devadutta @ 11:59 pm, GMT +0000 ( 1300751998 ) Play

Explain why.

Cracked by: Raghuvansh , Rogi , rohanquizzer , shrey , Anjul , Dibyo , KK , Siddarth Pai , shrik , Ananth , jowens , Sumanth Patlolla , SV , dineshk , jins , abinash , shubhang , raklodramA , Logik , Nanda , Mo , Aravind , Shwetha Maiya , Thejas V R and krudebox

Answer:
Doppler Shift

Quoting Shwetha
Light from moving objects will appear to have different wavelengths depending on the relative motion of the source and the observer.
Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift).

Points assigned by AutoRaja. Review by lazy humans pending.

26 Responses to “Slow down”

  1. Raghuvansh
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    Doppler Effect.


  2. Rogi
    48
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    Two words… Blue Shift.


  3. The doppler effect of light. if something is moving towards you very fast the light waves will squash up and become blue shifted, however this only occurs noticeably at speeds relative to the speed of light, very fast indeed. So if someone were to drive relative at the speed of light towards the driver with the sticker, to them the sticker would look blue


  4. shrey

    Doppler effect.


  5. Anjul
    2
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    1

    Doppler effect (blue shift).


  6. Dibyo
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    blue shift.


  7. KK
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    Blue-shift

    If you are travelling towards the sticker at very high speed, then the red will be visible as blue!
    if you want the reflected light to shift from, say, 700 nm(red) to 450 nm(blue), you would have to be approaching the sticker at about 0.42c (42% of the speed of light in a vacuum), or 125,000 km / s (281,000,000 mph).


  8. hahahhahahahha
    nice one
    dopler effect


  9. shrik
    10
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    Doppler effect, blue shift, etc..


  10. Ananth
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    Redshift/Blueshift phenomenon


  11. jowens
    13
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    “Only objects moving at near-relativistic speeds have red or blue shifts that are visible to the naked eye.” Thanks, Wikipedia!

    (Not sure what “sitter” means.)


  12. Sumanth Patlolla
    27
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    7

    Blueshift is the shortening of a transmitted signal’s wavelength, and/or an increase in its frequency, due to the relativistic Doppler effect, which indicates that the object is moving toward the observer.The name comes from the fact that the shorter-wavelength end of the optical spectrum is the blue(or violet) end, hence, when visible light is compacted in wavelength, it is shifted towards the “blue” end of the spectrum.

    Only objects moving at near-relativistic speeds have red or blue shifts that are visible to the naked eye.


  13. SV
    1

    Good one, Blueshift on wiki explains it better


  14. dineshk
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    3
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    Doppler effect. You tailgate someone (really really) fast and the red spectrum shifts to blue. Sheldon would have this sticker if he owned a car :)


  15. jins

    blue shift, basically if ur moving too fast light appears to tend to the blue end of the spectrum due to doppler effect.


  16. abinash

    blue shift


  17. shubhang

    Hi,
    Its blueshift based on doppler effect.


  18. Dopler Shift


  19. Logik
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    Doppler effect. Blue shift.


  20. Nanda

    Blue shift.
    Relativistic Doppler Effect


  21. udupendra
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    Einstein’s (special?) theory of relativity – > red shift etc


  22. Mo

    Doppler Shift, bro. ACCELERATE TOWARDS IT FOR BLUE SHIFT!


  23. Aravind

    Doppler effect. Unless there are IR sources around, you’ll even the wording will appear blue-ish. So, a fairly useless warning, methinks.


  24. Doppler Shift
    Light from moving objects will appear to have different wavelengths depending on the relative motion of the source and the observer.
    Observers looking at an object that is moving away from them see light that has a longer wavelength than it had when it was emitted (a redshift), while observers looking at an approaching source see light that is shifted to shorter wavelength (a blueshift).


  25. Doppler effect – Blue shift.


  26. krudebox
    1

    Doppler effect in light. The Blue Shift


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