'Calculating magnification' diaporamas de présentation

Magnification and Size

Magnification and Size. Measuring biological specimens using millimetres as units. To accurately measure the size of cellular structures we need a suitable scale:. Ideally, we need a scale we can see directly alongside the cells we are observing:. Start by putting a ruler under the microscope:.

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Topic 2

Topic 2. Cells. 2.1.1 The Cell Theory 2.1.2 Evidence for the Cell Theory. Theories: Theories are developed after the accumulation of much data. Sometimes, theories are completely abandoned because of conflicting evidence.

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Using a Microscope

Using a Microscope. Parts of a Microscope. Field of View. As magnification increases, the field of view decreases!. At 40x magnification you will be able to see 5mm. At 100x magnification you will be able to see 2mm. At 400x magnification you will be able to see 0.45mm, or 450 microns.

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Care and Use of the Microscope

Care and Use of the Microscope. Replace dust cover and put up after use Hold with one hand on the arm and one on the base Only use lens paper to clean microscope lens Report any problems to me. Let the cord hang off the lab table Drag the microscope across the lab table

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Calculating Magnification

Calculating Magnification. Using plant cell Section 2.3. Formula. Size of drawing (mm) ------------------------- = magnification (x) Size of Specimen (mm) Remember to: Measure in mm Write formula Write numbers with units Give correct units for magnification.

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