Scanning electron microscope image of a snout beetlehttp://remf.dartmouth.edu/images/insectPart2SEM/source/20.html Image: public domain. Feb. 2012
Calculating Linear Magnification of an Electron-Micrograph using it's scale bar
There are three steps:
Measure the length of the scale bar - in mm.
Convert your measurement into µm.
Calculate the magnification.(Magnification = measured length /the number written.As long as you have the SAME UNITS)
Magnifiation = the number of times bigger the scale bar actually is, compared to the measurement written on it?
32mm
32 x 1000 = 32000µm
32000µm / 100 µm = 320x magnification
Scanning electron microscope image of a snout beetlehttp://remf.dartmouth.edu/images/insectPart2SEM/source/20.html Image: public domain. Feb. 2012
Calculating Specimen Size using a scale bar
There are four steps:
Measure the length of the Specimen in mm.(show working)
Measure the length of the scale bar in mm.
Calculate how many scale bar lengths make the specimen. (Divide length of specimen by length of scale bar)
Calculate the size. Multiply the scale bar label by the last answer.(UNITS are the same as the scale bar)
2.6 x 100 µm = 260µm
Scanning electron microscope image of a snout beetlehttp://remf.dartmouth.edu/images/insectPart2SEM/source/20.html Image: public domain. Feb. 2012
Magnifiation = x 320
Calculating Specimen Size using magnification
There are three steps:
Measure the length of the Image of the Specimen in mm.(show working)
Convert the length of the Specimen image to µm.(x 1000)
Calculate the actual size. Divide the length of the specimen image by the magnification(UNITS are µm)
Electron microscope image of pollen grains from oriental lily.http://remf.dartmouth.edu/images/botanicalPollenSEM/source/3.html Image: public domain. Feb. 2012
Calculating Linear Magnification of an Electron-Micrograph using it's scale bar
There are three steps:
Measure the length of the scale bar - in mm.
Convert your measurement into µm.
Calculate the magnification.(Magnification = measured length /the number written.As long as you have the SAME UNITS)
Magnifiation = the number of times bigger the scale bar actually is, compared to the measurement written on it?
magnification
Electron microscope image of pollen grains from oriental lily.http://remf.dartmouth.edu/images/botanicalPollenSEM/source/3.html Image: public domain. Feb. 2012
Calculating Specimen Size using a scale bar
There are four steps:
Measure the length of the Specimen in mm.(show working)
Measure the length of the scale bar in mm.
Calculate how many scale bar lengths make the specimen. (Divide length of specimen by length of scale bar)
Calculate the size. Multiply the scale bar label by the last answer.(UNITS are the same as the scale bar)
Electron microscope image of pollen grains from oriental lily.http://remf.dartmouth.edu/images/botanicalPollenSEM/source/3.html Image: public domain. Feb. 2012
Magnification = x 2500
Calculating Specimen Size using magnification
There are three steps:
Measure the length of the Image of the Specimen in mm.(show working)
Convert the length of the Specimen image to µm.(x 1000)
Calculate the actual size. Divide the length of the specimen image by the magnification(UNITS are µm)
Human leukocyte - showing golgi apparatus http://remf.dartmouth.edu/images/humanBloodCellsTEM/source/3.html Image: public domain. Feb. 2012
Calculating Linear Magnification of an Electron-Micrograph using it's scale bar
There are three steps:
Measure the length of the scale bar - in mm.
Convert your measurement into nm this time.
Calculate the magnification.(Magnification = measured length /the number written.As long as you have the SAME UNITS)
Magnifiation = the number of times bigger the scale bar actually is, compared to the measurement written on it?
magnification
Calculating Specimen Size using a scale bar
There are four steps:
Measure the length of the Specimen in mm.(show working)
Measure the length of the scale bar in mm.
Calculate how many scale bar lengths make the specimen. (Divide length of specimen by length of scale bar)
Calculate the size. Multiply the scale bar label by the last answer.(UNITS are the same as the scale bar)