In nature, microscopic objects generally refer to particles with a spatial scale of less than 10-6 cm and a mass of less than 10-15 grams, including molecules, atoms, atomic nuclei, elementary particles and other material levels  Microscopic particles and various phenomena in extremely small spaces  , Generally referred to as microscopic phenomena  Microscopic particles and microscopic phenomena are collectively referred to as the microscopic world
The motion of the microscopic world obeys the laws reflected by quantum mechanics and quantum electrodynamics
What is a micro object