Since viruses are typically 20-200nm in diameter.. what is the best microscope to view them?

electron microscope

Explanation:

Due to their extremely small size, the best microscope to view viruses would be the electron microscope.

The electron microscope has the capability to create resolved images of extremely small objects by utilizing electrons as a source of light instead of the visible light photon that is typical of light microscopes.

There are different two types of electron microscopes:

A typical scanning electron microscope creates an image of an object by detecting knock-off electrons from the object, whereas a transmission electron microscope uses electrons that pass through the object to create the image of the object.

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.