Question

what is the unit of intensity of expression seen through microscope?

Answer 1

The actual power or magnification of a compound optical microscope is the product of the powers of the ocular (eyepiece) and the objective lens.

The maximum normal magnifications of the ocular and objective are 10× and 100× respectively, giving a final magnification of 1,000×.

Electron microscopes can only see the surface of a cell, rather than examining its structure.

The smallest thing you can actually see is about 200 nanometers.