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Christian Doppler's Birthplace
Christian Doppler is one of the many scientists, whose discoveries had a tremendous impact on mankind – a long time after he died. The Salzburgian physicist discovered in 1842 a shift in the frequency of waves if source and receptor changed their position to each other.
In other words: if a car blows its horn and is driving towards you, you will perceive the sound higher than it actually is; once the car passes you and now drives away from you, it will sound lower than it is – just think of the vrrrrrrrrooooommmmmm of a car driving by on the motorway.
The so-called “Doppler effect” is the principle for velocity measurements and a number of other applications, including radar technology, distance estimates in astrophysics or automatic doors.
Source: Christian Doppler
Salzburg, Austria
Christian Doppler's Birthplace
Christian Doppler is one of the many scientists, whose discoveries had a tremendous impact on mankind – a long time after he died. The Salzburgian physicist discovered in 1842 a shift in the frequency of waves if source and receptor changed their position to each other.
In other words: if a car blows its horn and is driving towards you, you will perceive the sound higher than it actually is; once the car passes you and now drives away from you, it will sound lower than it is – just think of the vrrrrrrrrooooommmmmm of a car driving by on the motorway.
The so-called “Doppler effect” is the principle for velocity measurements and a number of other applications, including radar technology, distance estimates in astrophysics or automatic doors.
Source: Christian Doppler
Salzburg, Austria