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Exploring the principle of mass conservation in classical physics, this concept asserts that the mass of an isolated system remains constant over time, barring external forces. It underpins fluid dynamics and solid mechanics, and is crucial in chemistry for stoichiometry. Historical figures like Lomonosov and Lavoisier contributed to its development, while Einstein's relativity introduced mass-energy equivalence, expanding the principle to include energy conservation.
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The principle of mass conservation states that the mass of an isolated system remains constant over time if it is not influenced by external forces
Continuity Equation
The continuity equation expresses mass conservation in fluid dynamics and continuum mechanics, stating that the rate of change of mass within a volume is equal to the net flow of mass into or out of the volume
Mass Conservation in Chemical Reactions
In chemistry, the law of conservation of mass is fundamental to stoichiometry, allowing for the precise prediction of product amounts from given quantities of reactants
The concept of mass conservation has evolved through significant historical contributions, including the work of Mikhail Lomonosov and Antoine Lavoisier
The introduction of special relativity by Albert Einstein revised the classical concept of mass conservation, establishing a relationship between mass and energy
The principle of mass-energy equivalence states that mass and energy are interchangeable and dependent on the observer's frame of reference
The principle of mass-energy conservation has been validated by extensive experimental evidence in modern physics
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Mass conservation in isolated systems
In an isolated system, mass remains constant over time, unaffected by external forces.
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Mass-energy equivalence formula
E=mc^2, where E is energy, m is mass, and c is the speed of light.
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Role of mass conservation in physics
Fundamental for understanding dynamics in fluid dynamics and solid mechanics.
