C h a p t e r 1 Introduction and Mathematical Concepts
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- Bu sahifa navigatsiya:
- Sub-Fields of Physics
- Relativistic Quantum Mechanics
- Historical Development
C H A P T E R 1 Introduction and The Nature of Physics1.1 Physics: An Introduction1.2 Physical Quantities and Units1.3 Accuracy, Precision, and Significant Figures1.4 ApproximationThe Nature of Physics
Sub-Fields of PhysicsIntroductory physics is divided into the following sub-fields:
Relativistic Quantum MechanicsModern physics: relativity (very fast) and quantum mechanics (very small). Relativity must be used whenever an object is traveling at greater than about 1% of the speed of light or experiences a strong gravitational field such as that near the Sun. Quantum mechanics must be used for objects smaller than can be seen with a microscope. The combination of these two theories is relativistic quantum mechanics, and it describes the behavior of small objects traveling at high speeds or experiencing a strong gravitational field. Relativistic quantum mechanics is the best universally applicable theory we have. Historical Development
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