Meterm1 decimeterdm10 −1 m0,1 m1/10 m centimetercm10 −2 m0,01 m1/100 m millimetermm10 −3 m0,001 m1/1 000 m micrometer (or micron)μm10 −6 m0,000001 m1/1.

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Presentation transcript:

meterm1 decimeterdm10 −1 m0,1 m1/10 m centimetercm10 −2 m0,01 m1/100 m millimetermm10 −3 m0,001 m1/1 000 m micrometer (or micron)μm10 −6 m0, m1/ m nanometernm10 −9 m0, m1/ m ÅngströmÅ10 −10 m0, m 1/ m UNIT OF MEASUREMENT IN BIOLOGY

LIGHT MICROSCOPE 1.ocular lens, or eyepiece 2.objective turret 3.objective lenses 4.coarse adjustment knob 5.fine adjustment knob 6.object holder or stage 7.mirror or light (illuminator) 8.diaphragm and condenser

DIFFERENT TYPES OF MICROSCOPES Light MicroscopyElectron Microscopy

Trasmission Electron Microscopy

Scanning Electron Microscopy

Light and Fluorescence Microscopy

Light Microscopy

Fluorescence Microscopy

Phase Contrast Microscopy

Steps for the preparation of Biological samples to be observed 1) Fixation Inclusion into hard compounds Catting into thin slices Staining 1) Fresh and alive cells Can be directly observed under Phase contrast microscopy

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