A Level Biology Revision "Magnification"

You can find all my A Level Biology videos fully indexed at https://www.freesciencelessons.co.uk/... In this video, we look at calculations involving magnification. First we explore how to determine the size of organelles from a microscope image using a scale bar. We then look at how we can use an equation to determine the magnification of an image and how to determine the actual size of an organelle. Image credits: Pancreatic Acinar Cell https://commons.wikimedia.org/wiki/Fi... Louisa Howard, Public domain, via Wikimedia Commons Bluetongue virus cell https://commons.wikimedia.org/wiki/Fi... CSIRO, CC BY 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons Macrophage in alveolus https://commons.wikimedia.org/wiki/Fi... Louisa Howard, Public domain, via Wikimedia Commons Cell nucleus https://commons.wikimedia.org/wiki/Fi... This file has been identified as being free of known restrictions under copyright law, including all related and neighbouring rights. Golgi apparatus https://commons.wikimedia.org/wiki/Fi... Louisa Howard, Public domain, via Wikimedia Commons Green ruler https://commons.wikimedia.org/wiki/Fi... Luigi Chiesa, CC BY-SA 3.0 https://creativecommons.org/licenses/..., via Wikimedia Commons Light microscope https://commons.wikimedia.org/wiki/Fi... GcG(jawp), Public domain, via Wikimedia Commons