Microscope Notes.

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Presentation transcript:

Microscope Notes

YouTube Amazing Microscopic Images

Learning Objectives Identify various microscope parts and state the function for each part. Demonstrate the proper way to carry a microscope.

Robert Hooke (1665) Described the cellular structure of cork. First to describe the structures as “cells”

Anton van Leeuwenhoek (late 1600s) Improved lenses, discovered “animacules” and bacteria

Matthias Schleiden (1838) Discovered that plant parts are made of cells

Theodor Schwann (1839) Discovered that animal parts are made of cells

Rudolph Virchow (1855) All cells arise from pre-existing cells

Microscope An instrument with one or more lenses that makes an enlarged image of an object.

Calculating Total Magnification Ocular Lens Magnification X Objective Lens Magnification

Microscope Parts Ocular lens Objective lens

YouTube How to Focus a Microscope

Demo How to Carry a Microscope

Steps for Focusing the Microscope Place slide under the stage clips on stage Turn to lowest (4X) objective lens Turn on light First, focus with coarse adjustment Second, focus with fine adjustment Change to middle (10X) objective lens Repeat step 5 only Change to high (40X) objective lens Focus with fine adjustment

Stop Here

Important Cell Scientists Acheivement Hooke (1665) Cellular nature of cork Van Leewenhoek (late 1600s) Lenses, bacteria Schleiden (1838) Plant cells Schwann (1839) Animal cells Virchow (1858) All cells arise from preexisting cells

Cell Theory All living things are made up of cells Cells are the basic units of structure and function All cell arise from preexisting cells

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