Microscopes Are Inherently Limited by the Wavelength of the Light

question 17

Multiple Choice

Microscopes are inherently limited by the wavelength of the light used. How much smaller (in order of magnitude) can we "see" using an electron microscope whose electrons have been accelerated through a potential difference of 50000 V than using red light (500 nm) ?

• A) 3
• B) 4
• C) 5
• D) 6
• E) 14

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Definitions:

Mutarotation

The change in optical rotation due to the change in equilibrium between two anomers of a sugar solution over time.

Methyl-β-D-Talopyranoside

A chemical compound that is a methyl glycoside derived from the β-anomer of D-talopyranose.

Chair Form

A specific, stable conformation of cyclohexane that minimizes steric strain, resembling a chair.

D-Talose

A type of sugar, specifically a monosaccharide, that is part of the aldohexose family and is known for its optical activity.