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Problem with Classical Physics Video Lecture | Modern Physics

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FAQs on Problem with Classical Physics Video Lecture - Modern Physics

1. What are the limitations of classical physics?
Ans. Classical physics, also known as Newtonian physics, is based on the principles of mechanics and does not adequately explain phenomena at the atomic and subatomic level. It fails to account for quantum effects and the behavior of particles at high speeds, such as those near the speed of light. Additionally, classical physics cannot explain certain phenomena like wave-particle duality and the uncertainty principle, which are fundamental concepts in quantum mechanics.
2. Can classical physics accurately describe the behavior of all objects?
Ans. No, classical physics has limitations in describing the behavior of extremely small particles, such as electrons or photons, which exhibit wave-particle duality. Classical physics is best suited for macroscopic objects and everyday phenomena where quantum effects are negligible. At the atomic and subatomic scale, the laws of classical physics break down, and quantum mechanics becomes necessary to accurately describe and predict the behavior of particles.
3. How does classical physics differ from quantum physics?
Ans. Classical physics and quantum physics are two different branches of physics that describe the behavior of objects at different scales. Classical physics is based on Newton's laws of motion and describes the motion of macroscopic objects, such as planets, cars, and projectiles. On the other hand, quantum physics deals with the behavior of particles at the atomic and subatomic level, where phenomena such as wave-particle duality, superposition, and entanglement occur.
4. Why is classical physics still used despite its limitations?
Ans. Classical physics is still widely used because it provides accurate predictions and explanations for many everyday phenomena and engineering applications. It is highly effective in describing the motion of macroscopic objects and is sufficient for most practical purposes. Additionally, classical physics is easier to understand and apply compared to the complex mathematical formalism of quantum mechanics. Thus, for most situations where quantum effects can be ignored, classical physics remains a valuable and practical tool.
5. Can classical physics be unified with quantum mechanics?
Ans. Efforts have been made to unify classical physics with quantum mechanics in the field of quantum field theory. This field aims to describe the behavior of particles and fields using a combination of classical and quantum principles. However, a complete and consistent unification of classical and quantum physics is still an ongoing challenge in theoretical physics. The two theories have fundamental differences in their assumptions and mathematical frameworks, making a complete unification elusive at present.
37 videos|16 docs|19 tests
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