Physics, Relativity, Muon, Quantum Physics, Particle Physics.
considered moving, the time period of the received wave has to be multiplied by a factor of √(1−𝛽2) and therefore, the frequency 𝑓𝑟 to be multiplied by a factor of 1 / √(1−𝛽2). On doing so and rearranging, one gets (𝑓𝑠 / 𝑓𝑟) = √[(1+𝛽) / (1−𝛽)]. Thus one gets the formula extensively used in