Question

Which instruments are used to measure very small distances at the atomic scale?

Options

• Vernier callipers and screw gauges

• Electron microscopes and tunnelling microscopes

• Optical telescopes and radio telescopes

• Metre scales and micrometres

Answer 1

Electron microscopes and tunnelling microscopes

Explanation:

Visible light has a wavelength too large to see atomic details, while electron and tunnelling microscopes can study structures at the nanometre and sub-nanometre scale.