COLLEGE PHYSICS,V.2
11th Edition
ISBN: 9781305965522
Author: SERWAY
Publisher: CENGAGE L
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Chapter 27, Problem 2CQ
To determine
Why is an electron microscope more suitable than an optical microscope for seeing the objects of atomic size.
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The smallest resolving power of a microscope is proportional to the magnitude of the wavelength used.
a) 15 nm and
b) How many energetic electrons are needed in the electron microscope for a resolution of 0.5nm?
7. Resolving ‘power’ of an electron microscope versus optical (photon) microscope: If a resolution of 1.0 x 10-11m (0.010nm) is required to ‘see’ an atom
(a) If electrons are used (emicroscope), what minimum kinetic energy of the electrons is required? Use deBroglie’s Hypothesis and KE = p2 /2me and non-relativistic velocities:
(b) If photons are used, what minimum KE (Eγ) is required to obtain 10-11m resolution?
For a given accelerating voltage, an electron microscope has a certain theoretical resolution. Suppose that instead of a beam of electrons you used a beam of protons, with the same accelerating voltage. How would this affect the theoretical resolution?
Chapter 27 Solutions
COLLEGE PHYSICS,V.2
Ch. 27.5 - Prob. 27.1QQCh. 27.5 - Prob. 27.2QQCh. 27.5 - Prob. 27.3QQCh. 27.6 - Prob. 27.4QQCh. 27.6 - Prob. 27.5QQCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 4CQCh. 27 - Prob. 5CQ
Ch. 27 - Prob. 6CQCh. 27 - Prob. 7CQCh. 27 - Prob. 8CQCh. 27 - Prob. 9CQCh. 27 - Prob. 10CQCh. 27 - Prob. 11CQCh. 27 - Prob. 12CQCh. 27 - Prob. 13CQCh. 27 - Prob. 14CQCh. 27 - Prob. 15CQCh. 27 - Prob. 16CQCh. 27 - Prob. 1PCh. 27 - Prob. 2PCh. 27 - Prob. 3PCh. 27 - Prob. 4PCh. 27 - Prob. 5PCh. 27 - Prob. 6PCh. 27 - Prob. 7PCh. 27 - Prob. 8PCh. 27 - Prob. 9PCh. 27 - Prob. 10PCh. 27 - Prob. 11PCh. 27 - Prob. 12PCh. 27 - Prob. 13PCh. 27 - Prob. 14PCh. 27 - Prob. 15PCh. 27 - Prob. 16PCh. 27 - Prob. 17PCh. 27 - Prob. 18PCh. 27 - Prob. 19PCh. 27 - Prob. 20PCh. 27 - Prob. 21PCh. 27 - Prob. 22PCh. 27 - Prob. 23PCh. 27 - Prob. 24PCh. 27 - Prob. 25PCh. 27 - Prob. 26PCh. 27 - Prob. 27PCh. 27 - Prob. 28PCh. 27 - Prob. 29PCh. 27 - Prob. 30PCh. 27 - Prob. 31PCh. 27 - Prob. 32PCh. 27 - Prob. 33PCh. 27 - Prob. 34PCh. 27 - Prob. 35PCh. 27 - Prob. 36PCh. 27 - Prob. 37PCh. 27 - Prob. 38PCh. 27 - Prob. 39PCh. 27 - Prob. 40PCh. 27 - Prob. 41APCh. 27 - Prob. 42APCh. 27 - Prob. 43APCh. 27 - Prob. 44APCh. 27 - Prob. 45APCh. 27 - Prob. 46APCh. 27 - Prob. 47APCh. 27 - Prob. 48APCh. 27 - Prob. 49APCh. 27 - Prob. 50APCh. 27 - Prob. 51APCh. 27 - Prob. 52AP
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- scanning electron microscopy (SEM) exhibits higher resolution than transmission electron microscopy (TEM) 0 True O Falsearrow_forwardProvide a detailed example of quantum entanglement along with images.arrow_forwardAn electron microscope is designed to resolve objects as small as 0.14 nm. What energy electrons must be used in this instrument?arrow_forward
- The spacing between atomic planes in a crystal is 0.130 nm. a) If 15.0 keV x rays are diffracted by this crystal, what is the angle of first-order diffraction? b) If 15.0 keV x rays are diffracted by this crystal, what is the angle of second-order diffraction?arrow_forwardWhat is the difference between SEM and TEM electron microscopes?arrow_forwardThe spacing between crystalline planes in the NaC1 crystal is 0.281 nm, as determined by X-ray diffraction with X-rays of wavelength 0.170 nm. What is the energy of neutrons in the neutron beam that produces diffraction peaks at the same locations as the peaks obtained with the X-rays?arrow_forward
- Why can you see through glass but not through wood?arrow_forwardWhy are X-rays emitted only for electron transitions to inner shells? What type of photon is emitted for transitions between outer shells?arrow_forwardSpeculate as to how the diffraction patterns of a typical crystal would be affected if -rays were used instead of X-rays.arrow_forward
- Check Your Understanding Suppose that the diameter of the aperture in Example 6.16 is halved. How does it affect the resolving power?arrow_forwardAt what velocity will an electron have a wavelength of 1.00 m?arrow_forwardHow is a Blu-Ray player able to read more information that a CD player?arrow_forward
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