Doppler Effect: Moving Objects & Wavelengths

[scientifico]

Hello, what is referred to that every moving body has an associate wavelength ?

thank you

 

[Dale]

That is referring to the de Broglie wavelength:
http://en.wikipedia.org/wiki/Matter_wave

 

[sophiecentaur]

But the de Broglie wavelength tends to be very short and can only be applied, with any real meaning, to 'simple' particles. It is fun to calculate the wavelength of a London bus, traveling at 30mph but is is not a valid thing to do.