the mass of a body in motion relative to the observer: it is equal to the rest mass multiplied by a factor that is greater than 1 and that increases as the magnitude of the velocity increases.
Why is Catholic Church changing its official Mass?This weekend the Catholic Church is changing the required English-language Mass. This is a big deal because it is the third time in the 1700-year history of the Church that the Mass is being formally changed, according to the Lexington Herald-Leader. First let’s review a brief history of the Catholic Church. The Church and its sacred documents were codified at the Council of Nicaea in …
A lot vs. Alot: 9 Grammatical PitfallsRead more in this article about some frequently asked questions and fun facts related to our definitions.
- relatively prime numbers,
- relativistic quantum mechanics,
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
In Special and General Relativity, the observed mass of an object moving with respect to the observer. The relativistic mass is a function of the rest mass and the velocity of the object. Compare rest mass.
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