How things work college course/Quantum mechanics timeline/Quiz


 * These topics are discussed in How things work college course/Quantum mechanics timeline.

{Excepting cases where where quantum jumps in energy are induced in another object (i.e., using only the uncertainty principle), which would NOT put a classical particle into the quantum regime?} + high speed - confinement to a small space - low speed - low mass {What are the units of Plank's constant?} - mass x velocity x distance - energy x time - momentum x distance + all of the above - none of the above {What are the units of Plank's constant?} - mass x velocity - energy x time - momentum x distance x mass + all of the above - none of the above {How would you describe Old Quantum Theory} - complete and self-consistent - complete but not self-consistent - self-consistent but not complete + neither complete nor self-consistent {The first paper that introduced quantum mechanics was the study of } + light - electrons - protons - energy {What are examples of energy?} - $$\frac{1}{2}mv^2$$ - mgh where m is mass, g is gravity, and h is height - heat + all of the above {What are examples of energy?} - $$\frac{1}{2}mv$$ - momentum - heat + all of the above {What was Plank's understanding of the significance of his work on blackbody radiation?} - he was afraid to publish it for fear of losing his reputation - he eventually convinced his dissertation committee that the theory was correct + the thought it was some sort of mathematical trick - he knew it would someday win him a Nobel prize {What was "spooky" about Taylor's 1909 experiment with wave interference?} - The light was so dim that the photoelectric effect couldn't occur - The light was dim, but it didn't matter because he was blind. + The light was so dim that only one photon at a time was near the slits. - The interference pattern mysteriously disappeared. {How does the Bohr atom differ from Newton's theory of planetary orbits?} - The force between proton and electron is not attractive for the atom, but it is for planets and the sun. - The force between planets and the sun is not attractive for the atom, but it is for proton and electron. + planets make elliptical orbits while the electron makes circular orbits - electrons make elliptical orbits while planets make circular orbits