The Microscope Microscope History th 14 Century The

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The Microscope

The Microscope

Microscope History

Microscope History

th 14 Century The art of grinding lenses is developed in Italy and spectacles

th 14 Century The art of grinding lenses is developed in Italy and spectacles are made to improve eyesight.

1590 Dutch lens grinders Hans and Zacharias Janssen make the first compound microscope by

1590 Dutch lens grinders Hans and Zacharias Janssen make the first compound microscope by placing several lenses in a tube.

1667 Robert Hooke studies various objects with his microscope and publishes his results in

1667 Robert Hooke studies various objects with his microscope and publishes his results in Micrographia. He used a compound microscope to discover that living things were composed of cells.

1675 Anton van Leeuwenhoek, Known as the Father of Microscopy, uses a single lens

1675 Anton van Leeuwenhoek, Known as the Father of Microscopy, uses a single lens microscope (only one lens) to look at blood, insects, etc…He was first to describe cells and bacteria with detail

18 th Century Creation of microscopes using two or more lenses. These are called

18 th Century Creation of microscopes using two or more lenses. These are called compound microscopes.

1903 Richard Zsigmondy develops the ultra microscope. To study objects below wavelength of light

1903 Richard Zsigmondy develops the ultra microscope. To study objects below wavelength of light

1932 Frits Zernike invents the phasecontrast microscope. Use to study colorless and transparent biological

1932 Frits Zernike invents the phasecontrast microscope. Use to study colorless and transparent biological materials

1938 Ernst Ruska develops the electron microscope. Uses electrons to increase visibility

1938 Ernst Ruska develops the electron microscope. Uses electrons to increase visibility

1981 Gerd Binnig and Heinrich Rohrer invent the scanning tunneling microscope. Creates 3 -D

1981 Gerd Binnig and Heinrich Rohrer invent the scanning tunneling microscope. Creates 3 -D images of objects down to atomic level

Microscope Parts

Microscope Parts

Microscope Magnification

Microscope Magnification

Magnification Refers to the Power of a Microscope. 4 levels of Magnification are: Low

Magnification Refers to the Power of a Microscope. 4 levels of Magnification are: Low Power: 4 X Medium Power: 10 X High Power: 40 X Eyepiece Objective: 10 X

Total Magnification Calculated by taking the eyepiece objective TIMES the objective lens Example: Looking

Total Magnification Calculated by taking the eyepiece objective TIMES the objective lens Example: Looking through high power 10 X 40 = 400

Power of Magnification Low Power-You are able to See a large field of view,

Power of Magnification Low Power-You are able to See a large field of view, but not as much detail. High Power-the field of view is smaller, but you are able to see more detail.

Terms to Microscope Know

Terms to Microscope Know

Field of View Refers to the amount of a specimen we are able to

Field of View Refers to the amount of a specimen we are able to see; decreases as the power of magnification increases.

Slide Rectangular glass plate used to view samples of water or other materials.

Slide Rectangular glass plate used to view samples of water or other materials.

Cover Slip Small glass or plastic piece that is used to cover a water

Cover Slip Small glass or plastic piece that is used to cover a water drop on a slide.

CELLS ARE ARTWORK (thanks to microscopes)

CELLS ARE ARTWORK (thanks to microscopes)

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