Това са думите definitions, свързани с doppler-effect. Щракнете върху която и да е дума, за да отидете на страницата с подробности за думата. Или, отидете на дефиницията на doppler-effect.
0 a change that seems to happen in the rate of sound or light wave production of an object when its movement changes in relation to another object
1 a change that someone experiences in the frequency of waves, for example, of sound or light, when the distance between that person and the origin of the waves changes