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Photons, electrons are subatomic particles to which the wave-particle duality applies. Protons are heavier quantum objects and posses quantum tunneling which is a wave character.

What is the upper limit in size or mass after which quantum effects (wave-particle duality) no longer hold?

M.ghorab
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1 Answers1

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Quantum interference experiments have been done even by using large molecules, such as the C-60 fullerene; although there is no such thing as a 'limit', as quantum effects hold good for all objects, as it is already pointed out in the comments.

Harsha
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