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How is the Doppler effect on light waves analogous to the apparent change in pich of a passing train whistle?
Wiki User
∙ 12y ago
When the train gets close to you the sound wave are compressed making a higher pitch noise and as the train passes the sound waves become lengthened. That is the doppler effect in a nutshell. Now just compare it to how the doppler effect changes light waves.
Wiki User
∙ 12y ago
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Why is there a ball inside a whistle?
The reason for a ball inside a whistle is that it produces a 'warbling' sound that makes the whistle's sound more attention getting
How does a whistle make sounds?
Air travels through the whistle rubbing against the sides of the whistle than being forced out of the smaller opening at the front. The friction of air against the sides of the whistle is what makes the noise.
A Doppler effect occurs when a source of sound moves?
The "change in sound" refers to a change in frequency. If (for example) you move compared to the sound source, then more, or less, wave crests may pass you every second, depending in which direction you move. It's best to check an article on the Doppler effect (for example, in the Wikipedia); with an illustration or animation, it is actually quite intuitive why this happens.
Two friends blow two whistles at the same time The first whistle makes a sound whose frequency is twice that of the sound made by the other whistle Which sound will reach you first?
the higher one
What is the sound of whistle called?
yes, a whistle sound is high pitched sound
Does the Doppler Effect explain why you hear a train whistle differently after it passes you than you do as it approaches you?
Yes (True)
What type of scientis twould use a Doppler radar and why?
The Doppler radar used in weather forecasting measures the direction and speed, or velocity, of objects such as drops of precipitation. This is called the Doppler Effect and is used to determine whether movement in the atmosphere is horizontally toward or away from the radar, which aides in weather forecasting. The radar was named for J. Christian Doppler, an Austrian physicist, who was the first to articulate the reason an approaching train's whistle will sound higher than the whistle as the train moves away.
What do you call an effect where in the pitch of the whistle rises as the train approaches the station and falls off as it moves away?
It is called the Doppler effect
What is the Doppler effect and is it useful?
It is the effect that happens when waves like sound are moving in relation to another object. In the classic train whistle example, The whistle suddenly drops in pitch as it passes you and starts to move away from you. This is because the sound waves now are stretched out, giving them a lower pitch. It is useful. Doppler radar used in weather forecasting is one example.
What happens to sound of a train whistle as a train approaches and passes you?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.
What happens to the sound of a train whistle as a train approaches and passes you?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.
Why is the pitch of a train's whistle higher as the train approaches and loweras it moves away?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.
What happens to the sound of a train whistle as the train approaches and then passes?
This is known as the Doppler effect. As the train approaches you, the wavelength of the sound waves it emits are compressed, and therefore the whistle sounds higher. When the train is moving away, the wavelengths are extended, causing the whistle to sound lower. If the train were not moving at all, the pitch you would hear from the whistle would be somewhere between the high and low pitches you hear when the train is moving.Read more: http://wiki.answers.com/Why_is_the_pitch_of_a_train's_whistle_higher_as_the_train_approaches_and_loweras_it_moves_away#ixzz1DToTuS3j
What is the future tense of whistle?
The future tense of "whistle" is "will whistle." For example, "He will whistle a tune tomorrow."
What is the possessive form of whistle?
The possessive form is whistle's.
How do you write a whistle i chat line?
whistle whistle
Are the vocal cords affected when whistling?
Speech therapists will tell you that the vocal cords are not affected by whistling. The whistle, itself being made by the way you vary the air through your lips , may not affect your vocal cords, but you can't whistle without passing air over your vocal cords.
