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TeachMeFinance.com - explain doppler effect (aka Doppler shift) doppler effect (aka Doppler shift) The term 'doppler effect (aka Doppler shift)' as it applies to the area of Earth observation can be defined as ' The apparent change in frequency of sound or light waves, varying with the relative velocity of the source and the observer. If the source and observer draw closer together, the frequency is increased. Named for Christian Doppler, Austrian mathematician and physicist (1803-1853)'. Previous 5 Terms: Domestic water use (residential water use) Dominant dominant dominant trees Doppler coefficient Next 5 Terms: Doppler Radar Dormant volcano Dosage Form Dose Dose (for chemicals that are not radioactive) About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.