Transcript Tools of Life Scientists Ch. 1 Sec. 3

Tools of Life Scientists
The Microscope
History of the Microscope
From ancient times, man has
wanted to see things far smaller
than could be perceived with the
naked eye.
History of the Microscope
In order to make
accurate observations
of organisms that are
too small to be seen
with the naked eye,
life scientists use tools
that can magnify.
History of the Microscope
People first started
magnifying objects
about 2000 years ago
by looking through
glass containers filled
with water.
History of the Microscope
1590--Zacharias Janssen
and his son, two Dutch
eyeglass makers,
experimented with lenses
in a tube.
They found objects were
greatly enlarged.
This becomes the first
microscope.
History of the Microscope
1665—Robert Hooke looked at a
sliver of cork through a microscope
lens and noticed some “pores” or
“cells” in it.
History of the Microscope
1675—Anton van
Leeuwenhoek
created curved
lenses that allows for
the best magnification
of the time.
He is the first to see
and describe
bacteria.
History of the Microscope
1830—Joseph Lister
created the first
prototype of the
compound microscope.
The Microscope
Middle schools use compound
microscopes in the classroom.
The Microscope
These microscopes are made of three main parts:
1) A tube with
lenses (2 or more)
2) A stage
3) A light
Activity
Go around the room and view the microscopes
labeled 1 through 14.
In your ISN:
Label the parts of the
microscope and write
out the description of
each part
(correctly match the
numbers on your worksheet
to the numbers on the
microscope)