Microscopy workbook - converting units, magnification, scale bars. Question. The diagram below is a drawing of an organelle from a ciliated cell as seen with an electron microscope. Calculate the magnification factor of the diagram = 23mm 40mm = 23000mm 40mm = x 575. Cornell Institute for Biology Teachers, 2014 2. Calculate the actual length of AB from the image shown in the micrograph given with the scale bar … Calculate the total magnification. Use scale bars to determine magnification and actual size Compare the images obtained from optical and SEM microscopes Apply understanding of size, scale, and magnification to create a scale model (Summative) R e s ou r c e s : 1. 4.9 16 customer reviews. This is a workbook to help students practice calculate actual size and magnification. Created: Jan 26, 2017 | Updated: Apr 11, 2017. So the question is to calculate the magnification of this nucleus. Step 2: Measure image of bacterial cell ÷ magnification. Project Neuron 3. It says its actual length is 7um and when I measured it, it was 3.6cm = 36mm = 36000um Step 1: Calculate the magnification by measuring the scale bar image ÷ actual size. Preview. p_vidyadharan_95040 Title: Maths for Biology: Magnification Author: Created by gideonlyons. You need to choose the correct number from the conversion chart above based on the ____X magnification. Lichens and Mosses and Water Bears…Oh my! Step 2: Measure image of bacterial cell ÷ magnification . In order to create a scale bar of know dimension enough information to calculate the um/pixel size for the particular microscope, objective & camera is required. Given this information one can calculate how long (in pixels) the calibration bar needs to be in order to represent a desired um length. Example: Calculating Actual Size Given of a Structure Given Scale Bar on an Image. a few seconds ago by. 1000 nm (1 um) = pixels nm/pixels 1000 nm = 200 pixels 5.0 nm/pixel 200 pixels = 1 micron scalebar. Scale Bars / Calibration - General Information. Calculate length of scale bar: 1 um = 1,000 nm. IB Magnification & Scale Bar Calculations #1 - Practice DRAFT. Step 1: Calculate the magnification by measuring the scale bar image x actual size .