Introduction to Quantum Physics Summary Sheet PDF

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Introduction to Quantum Physics Summary Sheet...

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Current topic:

Introduction to Quantum Physics

Chapters Text Book:

29.1-29.7

Concept Summary: Name of Physical Quantity/Conce pt 1

2

3

*Describe IYOW

SI Unit

Definition Formula

Quantization of Indication that energy is sometimes quantized came Energy from blackbody radiation which is the emission of EM radiation by an object with an emissivity of 1. Photoelectric Effect

the process in which EM radiation ejects electrons from a material

Photon Energies the amount of energy a photon has

f is the freque ncy of the radiati on

E=hf

E

E=hf

4

Planck’s constant

recognized that energy levels of the emitting atoms and atoms and molecules were quantized where only the allowed values of E=(n+½)hf where n is a positive integer.

h

h=6.626 x 10-32 Js

5

Photon

Photons have

p

p=h/λ

Momentum

momentum

λ=photon wavelength Photon energy and momentum are related by p=E/c E=hf=hc/λ for a photon

6

The particleWave Duality

wave duality is the property of behaving like a particle or a wave; the term for the phenomenon that all particle have wave characteristics

7

De Broglie Wavelength

the wavelength possessed by a particle of matter

8

Heisenberg uncertainty principle

limits the precision in which certain physical quantities can be known simultaneously

9

Quantum Mechanics

the branch of physics that deals with small objects and with quantization of various entities specifically energy.

10

x-ray

λ=h/p p=momentum

EM photon between y-ray and UV in energy

Problems Worked:

1-3 ,7-10 ,12-14 ,23-29 ,42-46 ,54-59

**Context Summary:

Quantum mechanics is the branch of physics that work with small objects and the quantization of various entities specifically energy. The first indication that energy is quantized came from blackbody radiation

where the emission of EM radiation by an object with an emissivity of 1. The photoelectric effect is the process where EM radiation ejects electrons from material, and Einstein proposed that photons are the quanta of EM radiation having energy. As Einstein explained all characteristics of the photoelectric effect are because of the interaction of the individual photons with individual electrons. Photon energy is responsible for a lot of characteristics of EM radiations specifically at high frequencies. Photons also have momentum and it is related to their energy. EM radiation can have either a particle or a wave which is called particle-wave duality. Particles also have a wavelength that is covered un the de Broglie wavelength. Additionally, the matter has the same interference characteristics as any other wave. * If you are describing a quantity also indicate if it is a vector or a scalar and indicate unit. Include the definition formula for each quantity and all formulas that might help in solving the problems on the exam. *IYOW means “In your Own Words” **What did you learn from solving the cited problems that you can use in working out new problems in the future?...