Jaeger, Gregg (September 2014). "What in the (quantum) world is macroscopic?". American Journal of Physics. 82 (9): 896–905. 

https://doi.org/10.1119%2F1.4878358 

Georgetown University

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What in the (quantum) world is macroscopic?

"The microscopic scale". Science Learning Hub. The University of Waikato. Archived from the original on 20 April 2016.

The microscopic scale

Feynman, Richard; Leighton, Robert; Sands, Matthew (1964). The Feynman Lectures on Physics. 3. California Institute of Technology. ISBN 978-0201500646. 

The Feynman Lectures on Physics

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