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 passes through. Focus the slide by ...

NEW ORLEANS — Mike Pereira made his way to a chair waiting for him inside a meeting room at the Convention Center here Thursday when he began to laugh at the crowd of media waiting for him.

The human eye can see objects as small as 50 μm. We require a microscope to see cells in further detail. The magnification of a lens is shown by a multiplication sign followed by the amount the ...