Hi, can i know two phenomena related to quantum physics ?

Thread starter matt222
Start date Feb 12, 2007
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Hi Phenomena Physics Quantum Quantum physics

In summary, the uncertainty principle in quantum physics states that it is impossible to know both the exact position and momentum of a subatomic particle at the same time. Quantum entanglement is a phenomenon where two or more particles become linked and any changes to one will affect the other, regardless of distance. Schrödinger's cat thought experiment demonstrates the paradox of a particle existing in multiple states until observed. Quantum tunneling allows particles to pass through energy barriers due to their wave-like nature. Superposition is the principle that particles can exist in multiple states simultaneously until observed.

Feb 12, 2007

matt222

Hi, can i know two phenomena related to quantum physics ??

hi all

can i knw two phenomena related to quantum physics ??

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Feb 12, 2007

cristo

Staff Emeritus

Science Advisor

Erm... like what? Is this some sort of homework question?

Feb 12, 2007

AlphaNumeric

http://en.wikipedia.org/wiki/Quantum_physics

Anything specific there?

1. What is the uncertainty principle in quantum physics?

The uncertainty principle is a fundamental concept in quantum physics that states that it is impossible to know both the exact position and momentum of a subatomic particle at the same time. This is due to the wave-particle duality of particles, where they can exhibit both wave-like and particle-like behavior.

2. What is quantum entanglement?

Quantum entanglement is a phenomenon in which two or more particles become linked together in a way that their states cannot be described independently. This means that any changes to one particle will instantly affect the other, regardless of the distance between them. This concept is still not fully understood and is being explored for potential applications in quantum computing and communication.

3. How does the Schrödinger's cat thought experiment relate to quantum physics?

Schrödinger's cat is a thought experiment that illustrates a paradox in quantum physics. It involves a cat in a sealed box with a vial of poison that will be released based on the decay of a radioactive atom. According to quantum mechanics, the atom exists in a state of superposition, meaning it is both decayed and not decayed at the same time. This leads to the paradox of the cat being both dead and alive until the box is opened and the state is observed.

4. What is quantum tunneling and how does it work?

Quantum tunneling is a phenomenon in which a particle can pass through a potential energy barrier that would normally be too high for it to overcome. This is possible due to the wave-like nature of particles, allowing them to exist in multiple locations at once and have a small probability of appearing on the other side of the barrier. This concept is used in various technologies, such as scanning tunneling microscopes.

5. Can you explain the concept of superposition in quantum physics?

Superposition is a fundamental principle in quantum physics that describes how particles can exist in multiple states at the same time. This is due to the wave-like nature of particles, where they can be in a combination of states until they are observed or measured. This concept is essential in understanding quantum computing and the behavior of subatomic particles.