Added: 3 years ago
From: paulie1982
Views: 65,190
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  • Wait I have a question. I know how the doppler effect works on a 2 dimensional scale, but how about a 3 dimensional one. For instance, how does the doppler effect work on the the siren going upward and downward. Thanks

  • kool

  • You spelled emAnate wrong.

    Just pointing it out..

  • thumbs up if you watching this cause of sheldon from the big bang theory

  • very interesting..i really understood it!!!

  • This effect could only be possible if the Earth were completely stationary, but it is likely not, so what are we using as the constant? What is the object moving relative to? The aether? The earth? The sun? The road? The observer?

  • i was struggling a little to grasp this, but this video really helped! so thank you :)

  • it shows the doppler effect clearly,thank you

  • keep up the good work

  • thanks

  • thanks

  • j.b.

  • Cool very nice

  • Thank you. How this is useful in radio chemistry....

  • your vdo's are really cool man

  • tq for your help... i understand what is doppler effect after watching your video~!

  • I really might have enjoyed physics back in school with an explanation like this. I was just curious about the doppler effect because I listened to so. talk about it. keep it up, thanks a lot

  • thankyou for that, it really helped

  • Good lesson.

  • Thanks so much for the highly imforming video. I'm not sure if you are a physics teacher or just a really smart person in physics, but may I tell you that you really explain The Doppler Effect well!! Thanks -

  • Thanks.

  • Just to confirm here. It's an APPARENT change in frequency isn't it? Because really the source still emits the same number of waves per second, and the movement causes variations in wavelength, giving the appearance of different frequency for an observer.

  • Yes, its only an apparent change, the waves might give the impression that the source is emitting more/less waves than it actually is but its only because the source is moving.

  • @Brucey117 Actually, it's not just apparent. The wavelength changes, becoming longer behind the moving object and shorter in front of it. Frequency and wavelength are reciprocal, which is to say that the wavelength (w) is the reciprocal of the frequency.

    f = 1/w and w = 1/f.

    You hear/see the wave from a stationary point relative to the medium. Speed of propogation is fixed, but the wave peaks are arriving closer together, or farther apart.

    w smaller; f higher, and vice-versa.

  • I am glade to see scientific animation ... wow !!

    5/5 !!

  • THANKYOUUU!xD

  • No problem aino28, glad you liked it

  • thank you! this was very informative!

  • No probs gyptax , i hope you gave it the 5 stars it deserves ;)

  • good vid

  • oh well thx a lot

  • thank u so much

    i'm really greatful to u

    i'd like to see videos on interference and diffraction of light

  • No problem, i'm working on a couple of videos at the moment to do with light - diffraction, reflection & total internal reflection etc, i'll have them up in a couple of weeks.

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