[DOC] [TLE] Doppler Effect - body, used, Earth, law, parts, effects, waves, change [PAR] As the car continues moving toward the person, the pitch of the horn appears to 
increase; ... The car horn effect described above was first explained around 1842 
by ... As the train moves forward, the sound waves from its whistle move with it. [DOC] [TLE] Doppler Shift : Twig - Twig Prep [PAR] The Doppler Effect is when the pitch of a sound seems to change as it moves 
past. The scientist Christian Doppler, 1842, was the first to explain why. An 
experiment was done using a steam train, horn players and observers. ... Though 
doppler shift was first discovered for sound waves, it was later shown to hold true 
for all... [DOC] [TLE] Doppler effect facts, information, pictures | Encyclopedia.com articles ... [PAR] This is an example of the Doppler effect: the change in the observed frequency of 
a .... track and a train approaches, Doppler noticed, the train's whistle has a high 
pitch. ... formula to describe this effect, Doppler presented his findings in 1842. ... 
As a jet moves through the air, it too produces sound waves which compress... [DOC] [TLE] 16.9 - WebAssign [PAR] Such phenomena were first identified in 1842 by the Austrian physicist ... In so 
doing, we will learn that the Doppler effect is the change in frequency or pitch of 
the ... It is similar to that heard when a train blowing its horn passes you at a high 
speed. ... (b) When the truck moves with a speed v s, the wavelength of the sound 
in... [DOC] [TLE] Doppler Effect - OpenStax CNX [PAR] May 9, 2009 ... Have you noticed how the pitch of a police car siren changes as the car passes 
by or how ... and physicist who first explained the phenomenon in 1842. ... The 
Doppler effect is the apparent change in frequency and ... When the car moves 
away from you, the sound waves that reach you ...... Version History... [DOC] [TLE] Exploration Guide: Doppler Shift - Net Start Class [PAR] Have you ever heard a train whistle suddenly change pitch as the train rushes by
? ... This change in pitch is known as the Doppler shift, first described in 1842 by 
the ... In this activity, you will observe how the Doppler effect is created. ... What 
was the frequency of the perceived sound as the car moves towards the observer
? [DOC] [TLE] Twig - Doppler Shift : Twig [PAR] The Doppler Effect is when the pitch of a sound seems to change as it moves 
past. The scientist Christian Doppler, 1842, was the first to explain why. An 
experiment was done using a steam train, horn players and observers. The effect 
was... [DOC] [TLE] What is Doppler effect? - Quora [PAR] I guess you meant Doppler Effect. Suppose that there is a happy bug in the 
center of a circular ... Most people are familiar with the Doppler affect from the 
change in pitch that ... to us, and when a planet is moving towards us, it appears 
a little bluer. ... The car horn effect described above was first explained around 
1842 by... [DOC] [TLE] The Doppler Illusion: The Influence of Dynamic Intensity Change on ... [PAR] Familiar examples may be the pitch change heard in a train's horn as it passes a 
crossing or an ambu- lance siren as it passes on the street. The Doppler effect... [DOC] [TLE] Radar - Scribd [PAR] Doppler was an Austrian physicist who first described in 1842, how the ... As the 
train moves closer to you the number of sound waves reaching your ear in a ... 
Lets know more about Doppler effect and Doppler Radars. .... The change in 
pitch of a passing train whistle and a speeding automobile horn demonstrate its 
effects. [DOC] [TLE] Radar - Scribd [PAR] Doppler was an Austrian physicist who first described in 1842, how the observed 
... As the train moves closer to you the number of sound waves reaching your ear 
in a .... The Doppler weather radar uses the principles of Doppler Effect for the .... 
The change in

Question: In this "effect" first described in 1842, the pitch of a train whistle seems to change as it moves
Answer: the Doppler effect