Question

The linear dimension (size) of the smallest observable thing in a microscope is called the resolution of the microscope. A conventional visible-light microscope has a resolution of approximately the wavelength of the light used. Similarly, an electron microscope has a resolution equal to approximately the de Broglie wavelengths of electrons used.

a) In order to observe individual atoms, a resolution limit of 50 pm is required. What energy photons is required for this resolution? In what part of the electromagnetic spectrum do these photons lie?

b) For the same 50 pm resolution limit, what energy electrons would be required in an electron microscope?

c) Based on your answers above, which microscope is more practical to resolve individual atoms?

Answer 1