By Richard Robinett

I've been a lot inspired via Robinett's advent to quantum mechanics. He heavily makes an attempt to educate the rules of the topic, and does so with massive impact. His quasi-derivation of the Schroedinger equation is notable.

I have used this two times in introductory quantum mechanics classes. a few scholars have been vocal of their dislike of the publication. besides the fact that they looked as if it would have discovered rather a lot from it. Given the adversarial reviews to be discovered approximately all different books in physics on Amazon the destructive reviews encourage contempt instead of recognize. If Robinett errs, it's in trying to educate Qm instead of in pounding formulae into scholars.

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**Extra info for Quantum Mechanics: Classical Results, Modern Systems, and Visualized Examples**

**Example text**

Estimate the quantum number associated with this classical motion. e. Ke 2 ) replaced by the gravitational force (GMe Mm ) and with the moon playing the role of the electron. 4, and you should ﬁrst rederive all of the relevant formulae for the energy, period, and orbital radius of the system. Using, for example, the length of the month, estimate the value of the quantum number n. 13. Quantum or classical systems. (a) At one point, the “world’s coldest gas” was a sample of 133 Cs atoms with a number density N ∼ 1010 cm−3 at a temperature of T ∼ 700 nK.

13. Using any approximations suggested by this description of the problem, ÉÍ See Milburn (1963) for an early discussion. 13. Geometry for light backscattered from electrons. 64) Evaluate this energy for a “blue” laser and the electron energy above. 8. Wave mechanical interference. (a) The interference patterns in Fig. 2 were obtained using electrons that had been accelerated through a potential difference of 80 000 V and an“effective” slit width of D ∼ 6 µm. Calculate the de Broglie wavelength of the electrons and estimate the lateral size of the diffraction pattern on a screen 10 cm from the slit.

7kB TCMB , while the minimum “effective mass” needed for pion production is actually Mmin = mp + mπ . What is the minimum proton energy needed for pion production under these assumptions? (c) What is the proton speed for the minimum energies derived in parts (a) and (b)? What is the wavelength of the CMB photons used in parts (a) and (b)? 3. “Stopping atoms with laser light”ÉË or Doppler cooling: Laser light can be used to exert a force on atoms, as shown in the schematic diagram in Fig. 11. Photons which are absorbed to excite the atom will transfer a net momentum in the +z direction, while the photons which are emitted in the subsequent decay are radiated isotropically (no preferred direction), so that there is a net momentum transfer.