2born (2born) wrote,
2born
2born

Бразильские упражнения на СТО

The mass-energy relation and the Doppler shift of a relativistic light source: https://arxiv.org/abs/2009.01925

Ademir Xavier Jr
This work considers the cospectral and arbitrary light emission of a moving source. The observed wavelengths of the emitted photons are described in term of kinematic and dynamical Doppler shifts in which the mass-energy relation plays a fundamental role. The presentation is an alternative way of emphasizing the importance of the concept of proper mass as a conserved quantity and the implications of the mass-energy relation when a source emits radiation. The physical contexts in which the source changes velocity after emission are discussed and a set of additional problems is presented.
Comments: Submitted to Physics Education (February 2020)
Tags: Мегаучебник или Что я читал и похвалил, разгребая arXiv'ы
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