Doppler Effect Grade 12 Notes pdf

Doppler-Effect-Grade-12-Notes-pdf
Physical Science Grade 12 Latest Question Papers with memorandum + Updated Revision Notes

Doppler Effect Grade 12 Notes pdf

Doppler Effect Grade 12 Notes pdf (Physical Science Grade 12): Doppler Efect is the change in frequency (or pitch) of the sound detected by a listener because the sound source and the listener have different velocities relative to the medium of sound propagation.

Doppler Effect can also be the apparent change in frequency of a wave, as a result of relative motion between the source and the observer.

When the source of a sound is moving towards you, the pitch sounds higher than that of the source. When the source moves away from you the pitch sounds lower. This is known as the doppler effect.

Source moving towards a stationary listener

  • Wavelength decreases/ waves are compressed. —
  • Frequency increases.
  • Velocity constant.
  • Pitch of sound increases.

Source moving away a stationary listener

  • Wavelength increases/ waves are further apart —
  • Frequency decreases
  • Velocity constant
  • The pitch of sound decreases

Equation for Doppler Effect

Radar Guns: Doppler Effect

The traffic officers will point the radar gun to the oncoming traffic.

The radar gun will send the infrared waves to the oncoming car that is moving towards the traffic officer. The waves will be reflected back to the radar gun by the moving traffic. The radar gun then acts as the receiver of the waves. For classroom purposes, waves to be considered are the one coming from the traffic, so the oncoming traffic must be the moving source reflecting back waves to the radar gun. Radar gun becomes the receiver or listener. Now Doppler formular can be employed to solve for the unknowns

  • Blood flow rate can be measured. (medical use)
  • Speed of the planets and stars can be determined.
  • Used to measure heartbeat of the unborn fetus in the womb. (medical use)
  • Used in weather stations to detect precipitation.

Downloadable Doppler Effect Grade 12 Notes pdf

Leave your thought here

Your email address will not be published. Required fields are marked *

Latest Posts

Highest Paying Jobs with Maths Literacy and Geography
Grade 12 Geography Latest Question Papers with memorandum + Updated Revision Notes
Highest Paying Jobs with Maths Literacy and Geography
Grade 10 Life Science June Exam paper 2022
Life Sciences Grade 10
Grade 10 Life Science June Exam paper 2022
Mathematical Literacy Grade 12 November 2021 Final NSC Exams question papers and memorandums
Mathematics Literacy Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Mathematical Literacy  Grade 12 November 2021 Final NSC Exams question papers and memorandums
Music Grade 12 November 2021 Final NSC Exams question papers and memorandums
Music Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Music  Grade 12 November 2021 Final NSC Exams question papers and memorandums
Information Technology (IT) + Data Grade 12 November 2021 Final NSC Exams question papers and memorandums
Information Technology (IT) Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Information Technology (IT) + Data Grade 12 November 2021 Final NSC Exams question papers and memorandums
Life Sciences Grade 12 November 2021 Final NSC Exams question papers and memorandums
Life Sciences Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Life Sciences  Grade 12 November 2021 Final NSC Exams question papers and memorandums
Religion Studies Grade 12 November 2021 Final NSC Exams question papers and memorandums
Religion Studies Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Religion Studies Grade 12 November 2021 Final NSC Exams question papers and memorandums
Hospitality Studies  Grade 12 November 2021 Final NSC Exams question papers and memorandums
Hospitality Studies Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Hospitality Studies  Grade 12 November 2021 Final NSC Exams question papers and memorandums
History Grade 12 November 2021 Final NSC Exams question papers and memorandums
History Grade 12 Notes and Past Exam Papers for Revision
History Grade 12 November 2021 Final NSC Exams question papers and memorandums
Physical Sciences Grade 12 November 2021 Final NSC Exams question papers and memorandums
Physical Science Grade 12 Latest Question Papers with memorandum + Updated Revision Notes
Physical Sciences  Grade 12 November 2021 Final NSC Exams question papers and memorandums
Select the fields to be shown. Others will be hidden. Drag and drop to rearrange the order.
  • Image
  • SKU
  • Rating
  • Price
  • Stock
  • Availability
  • Add to cart
  • Description
  • Content
  • Weight
  • Dimensions
  • Additional information
  • Attributes
  • Custom attributes
  • Custom fields
Click outside to hide the compare bar
Compare
Wishlist 0
Open wishlist page Continue shopping