Physics Lecture – 41 – Doppler Effect

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17 responses to “Physics Lecture – 41 – Doppler Effect”

  1. Tanya Murphy Avatar

    So, if you drove really fast toward a super loud rock concert, would it sound higher-pitched as frequency increased?

  2. Adam Bro Avatar

    farther, not further.

  3. Joe Paxton Avatar

    In addition, the Doppler Effect is used for police officers when they use their radar guns to detect your speed. The Doppler Effect is useful when you are detecting the speed and frequency of something coming towards you or away from you. It helps create models and data, along with predicting the velocity (direction of speed) of an astronomical object. When the object comes towards you the frequency and energy while the wavelengths become shorter and decrease. Also, it is used in weather; hence, the "Doppler Radar".

  4. Adam Beatty Avatar

    Somebody or something must be moving. Why? Well because a change in frequency implies a change in the energy of the sound wave (or vibrational energy of air molecules). So via conservation of energy the energy must have come from or go to somewhere else. When the frequency increases, then the movement of a body has given energy to the molecules and thus to the sound wave – increasing its energy and frequency. The converse holds true for bodies moving away.

  5. Seamless Robe Avatar

    I believe Mass plasma field vector E2, spherical region of universe is acting upon every point of space from a distance radius coming into and out of existence.
    Thus, the limited range of Spherical inward + and -outward wave chain reactions, less energy exchange, less wave interactions at right angles and Doppler causes a redshift with distance.
    Therefore Einstein was right the universe is infinite and matter is wave centres at the centre of there own ref-frames within the One Infinite Universe.

  6. mocktaree2 Avatar

    You spelled "I'm a douche" wrong.
    Many… Many… Many times…

  7. Jem'appelle lanoosh Avatar

    U r simply amazing 🙂

  8. mobilehost10 Avatar

    oh noooo
    i don't want to study this again!!!
    i got B in physics 🙂

  9. ironpack117 Avatar

    nnnnnnnnnnneeeeeeeeeeewwwwwwwww

  10. varun009 Avatar

    your definition is definitely easier to understand but people have to get used to learning how to understand general definitions or things become even harder. (that's what she said)

  11. krisnarocks Avatar

    reminds me with my middle school national exam.

  12. Cristi Feodor Avatar

    best teacher ever.

  13. reapsta1 Avatar

    The frequency will not change if the boat is stationary. It's only when the boat is either getting closer or further away from the source.

  14. Gordoa40 Avatar

    It was always explained to me as the source moving instead of the recipients. It can probably be either though. The source moves and although waves are coming out of it in all directions, the waves in front of it will get compressed because they are moving in the same direction as the source and more compressed waves = higher frequency. Likewise, less compressed waves in the back = lower frequency. That's easier to understand for me, hopefully it will help others too.

  15. volvogamer94 Avatar

    damn you cakertoons

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