The world's most advanced light microscopes allow ... The resolving power of a traditional microscope is limited by how tightly light can be focused, which is known as the diffraction limit.

To use a light microscope to examine animal or plant cells. To make observations and draw scale diagrams of cells. Turn the coarse focus so that the stage is as close to the objective lens as ...

You should not look through the microscope to do this. Line it up so that the specimen - if you can see it - is in the centre of the stage, where the light ... using labelled diagrams - or you ...