**HONORS PS 1500 - PHYSICS IN THE PLAYS OF TOM STOPPARD**

**Review for Exam #5 (Physics)**

Young's double-slit experiment with light

light, an electromagnetic wave

- what it is

- how it travels

- what produces light

wavelength of a wave

frequency of a wave - the number of waves that pass by per second

Einstein's postulates

- the laws of physics are the same for all observers in relative uniform motion
- the speed of light is the same for all observers in relative uniform motion

downfall of simultaneity

time dilation

length contraction

blackbody radiation

E = mc^{2}

blackbody spectrum and its characteristics

ultraviolet catastrophe - the incorrect prediction of classical physics that there should be an infinite amount of short-wavelength light energy in blackbody radiation

quantum of energy

Planck's constant - determines the size (small!) of quantum effects

photoelectric effect - light kicks electrons out from the surface of a metal - shows that light is a stream of particles (photons)

photon - a massless particle of light, energy depends on the frequency of the light

spectrum (wavelengths) emitted by a hot gas - bright, distinct emission lines of certain specific wavelengths (colors)

Bohr model of the hydrogen atom

- what it is

- electron orbits

- how it emits or absorbs a photon

electron

proton

quantum state - one of the matter waves (probability waves) for a system (for example, the electron orbits of an atom) - a solution of the Schrödinger equation (see below)

quantum jump - a transition of a system between quantum states (as when the electron jumps between the orbits of an atom)

de Broglie's matter waves (probability waves)

momentum

wave-particle duality

- everything in nature interacts like a particle

- everything in nature propagates (travels) like a wave

Schrödinger equation - an equation for calculating the matter waves (probability waves) for a system

Dirac equation - included Einstein’s relativity in the Schrödinger equation - predicted antimatter

positron

antimatter

matter-antimatter annihilation

Heisenberg uncertainty principle - it is impossible to know both the exact position and the exact momentum of a particle at the same time

electron double-slit experiment - showed electron interference and that electrons propagate (travel) like waves

philosophical implications of quantum physics

- end of determinism

- end of objective reality

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*Last modified:
Tuesday, April 14, 2009 09:11 AM*