Conceptual Physics II, Day 7

If light exhibits both particle and wave behavior, what about electrons - do they show a dual nature as well?

If an electron acts like a wave, what is the wave, i.e., what is waving?

What is meant by the "wavefunction" for a particle?

What can be learned from the wavefunction?

What is the significance of the wavelength of the wave associated with an electron?

What are the implications of the uncertainty principle for the observation of electron position and momentum?

Atomic electrons have specific allowed energy states. Why?

If atoms occupy only certain allowed levels, how do they get from one allowed level to another?

Why do atoms emit or absorb only certain specific colors of light?

How can you tell that there is calcium in the atmosphere of the star Betelgeuse, which is about 310 light years away from the earth?

Can an electron exist inside a nucleus? The Schrodinger equation for a particle in a box gives some insight.

How does the Schrodinger equation give insight into the building of the periodic table?

*Davisson- Germer experiment

*Electron waves

*Wave examples


*Schrodinger equation

*DeBroglie wavelength

*Baseball wavelength

*Uncertainty principle

*Wave packet

*Particle containment

*Range of forces

*Bohr model

*Absorption and emission

*Stimulated emission

*Planck hypothesis

*Hydrogen spectrum

*Particle in a box

*Periodic table building

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Conceptual Physics II, Day 8

What is a laser?

What are the characteristic properties which make the light from a laser unique?

What is a hologram? What properties distinguish a hologram from an ordinary photograph?


*Laser properties


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Conceptual Physics II, Day 9

Why is it that you are transparent to radio waves, more and more opaque as the frequency increases to the visible and ultraviolet part of the spectrum, and then suddenly transparent again when you get to the xray part of the electromagnetic spectrum?

Why do you say that ultraviolet exposure might involve some risk of skin cancer, whereas exposure from your microwave oven carries no such risk?

What types of radiation make up the ionizing radiation which we might be exposed to?

What kind of failures of classical physics led to the emergence of quantum theory?

*Radiation effects

*Absorption of radiation

*Radiation and the human body


*UV interactions

*Quantum energies

*Microwave interactions

*Electromagnetic spectrum

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