The Microscope Slide 2 Microscope History Slide 3 14 th Century
The art of grinding lenses is developed in Italy and spectacles are
made to improve eyesight. Slide 4 1590 Dutch lens grinders Hans and
Zacharias Janssen make the first compound microscope by placing
several lenses in a tube. Slide 5 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. Slide 6 1675 Anton van Leeuwenhoek,
Known as the Father of Microscopy, uses a single lens microscope
(only one lens) to look at blood, insects, etcHe was first to
describe cells and bacteria with detail Microscopy: the study of
very small things Slide 7 18th Century Creation of microscopes
using two or more lenses. These are called compound microscopes.
Slide 8 1903 Richard Zsigmondy develops the ultra microscope. To
study objects below wavelength of light Slide 9 1932 Frits Zernike
invents the phase-contrast microscope. Use to study colorless and
transparent biological materials Slide 10 1938 Ernst Ruska develops
the electron microscope. Uses electrons to increase visibility
Slide 11 1981 Gerd Binnig and Heinrich Rohrer invent the scanning
tunneling microscope. Creates 3-D images of objects down to atomic
level Slide 12 Microscope Parts Slide 13 Slide 14 Microscope
Magnification Slide 15 Refers to the Power of a Microscope. 4
levels of Magnification are: Scanning: 4X Low Power: 10X High
Power: 40X Eyepiece Objective: 10X Slide 16 Total Magnification
Calculated by taking the eyepiece objective TIMES the objective
lens Example: Looking through high power 10 X 40 = 400 Slide 17
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. Slide 18 Microscope
Terms to Know Slide 19 Field of View Refers to the amount of a
specimen we are able to see; decreases as the power of
magnification increases. Slide 20 Slide Rectangular glass plate
used to view samples of water or other materials. Slide 21 Cover
Slip Small glass or plastic piece that is used to cover a water
drop on a slide. Slide 22 CELLS ARE ARTWORK (thanks to
microscopes)
