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Why light microscopes cannot see atoms

Why light microscopes cannot see atoms

Resolving power is the smallest separation that can still be distinguished as two points. In a light microscope, diffraction becomes important when the detail size is comparable to the wavelength of visible light, about 400 nm400 \, \text{nm}400nm to 700 nm700 \, \text{nm}700nm.

Electron microscopes (A-level only) Lesson

  1. A Level
  2. /Physics
  3. /Electron microscopes (A-level only)

Step-by-step lessons on AQA A Level Physics Electron microscopes (A-level only). Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

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