Observing and recording - Microscopy, size and magnification (CCEA) - GCSE Biology (Single Science) Revision - CCEA - BBC Bitesize
The distance between the objective and eyepiece lenses in a microscope is 25 cm. The objective lens has a focal length of 6.00 mm and the eyepiece lens has a focal length
Microscopy Basics — Klar Scientific
Microscopy
Understanding Microscopes and Objectives | Edmund Optics