Max von Laue is known for his work with

A. double-slit interference.
B. single-slit diffraction.
C. x-ray crystallography.
D. holography.
E. magnetic resonance imaging.


C. x-ray crystallography.

Physics & Space Science

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A mercury manometer measures a pressure of 200 mmHg. What is this pressure in atm?

A. 0.204 B. 0.263 C. 0.301 D. 0.325 E. 0.375

Physics & Space Science

By operating a reversible heat engine with an ideal gas as the working substance in a Carnot cycle and measuring the ratio Qc /Qh, we can calculate

A. n, the number of moles of the ideal gas. B. the ratio Vc /Vh of the volumes of the ideal gas. C. the ratio Pc /Ph of the pressures of the ideal gas. D. the ratio PcVc /PhVh of the products of volumes and pressures of the ideal gas. E. the value of Avogadro's number.

Physics & Space Science

When air is cooled below its dew point without condensation, it is said to be ______________

Fill in the blank(s) with correct word

Physics & Space Science

Suppose that an atom has exactly two energy levels separated by an energy difference ?E. When such atoms are in contact with a reservoir at a temperature T1, the ratio of the number of atoms in the higher level to the number in the lower level is . If we increase the temperature to T2, the numerical value of this ratio

A. increases. B. decreases. C. remains the same.

Physics & Space Science