Doppler effect

principle · 1842 · Industrial Revolution

A change in wave frequency when the source moves.

Author: Christian Dopplerr.

Where it is used

• Big Bang theory — is used in. The redshift of galaxies.
• Doppler radar — is used in. The Doppler shift.
• Ultrasound scanner — is used in. Doppler imaging of blood flow.
• Speed radar — is used in. Speed is measured from the Doppler shift.

What it is a kind of

• Wave theory — is a kind of. A wave phenomenon.

Open Evothings