Why Is It That with a Standard Transmission Electron Microscope

question 109

Multiple Choice

Why is it that with a standard transmission electron microscope, resolution is actually about two orders of magnitude less than its theoretical limit?

• A)The lenses of an electron microscope exhibit serious spherical aberration problems, which can be avoided by using a very small N. A.
• B)The lenses of an electron microscope exhibit serious spherical aberration problems, which can be avoided by using a very large N. A.
• C)If electron wavelength is too high, spherical aberration distorts the image.
• D)If electron wavelength is too low, spherical aberration distorts the image.

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Definitions:

Subclavian Vein

A vein that runs under the clavicle, responsible for draining blood from the upper extremities and returning it to the heart.

Brachial Vein

A vein located in the upper arm that accompanies the brachial artery and is involved in returning deoxygenated blood back to the heart.

Axillary Vein

A large blood vessel that conveys blood from the lateral aspect of the thorax, axilla, and upper limb toward the heart.

Veins

Blood vessels that carry deoxygenated blood towards the heart from the body's tissues.