referencial de repouso
1. In physics, a reference frame in which an object or body is at rest, or a coordinate system in which a particular object has zero velocity
In the rest frame of the electron, the particle appears stationary.
No referencial de repouso do elétron, a partícula parece estar imóvel.
2. The inertial frame of reference in which the center of mass of a system is at rest
We analyzed the collision in the rest frame of the more massive object.
Analisamos a colisão no referencial de repouso do objeto mais massivo.
This is primarily a technical physics term used in relativity and mechanics. It is equally understood in Brazilian Portuguese-speaking physics communities and is typically taught in advanced secondary and university physics courses. The concept is fundamental to understanding Einstein's special and general relativity.
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