The microscope was developed in the 1600s by several people including Zacharias Janssen, who created the first microscope by combining two magnifying glasses, and Anton Von Leeuwenhoek, who created early modern microscopes. Robert Hooke used microscopes to discover and name cells. There are several types of microscopes including simple microscopes with two lenses, compound microscopes with multiple lenses allowing different magnifications, and stereomicroscopes with two eyepieces allowing 3D viewing of thick objects. The most powerful are electron microscopes, which can magnify over a million times using electron beams. Compound, simple, and stereomicroscopes use convex lenses to magnify objects.

1. Microscope Notes
The microscope was developed in the 1600’s.
Several people are given credit for the development
of the microscope
Zacharias Janssen: created the first microscope by
putting two magnifying glasses together in a tube.
Anton Von Leeuwenhoek, also credited with creating
the first modern microscopes.
Robert Hooke: discovered and named cells
Types of microscopes
Simple: A simple microscope is a microscope with
only two lenses total, and eyepiece and objective
lens.
Compound: These microscopes have three or more
lenses that allow the observer to look at an object at
different magnifications.
Stereomicroscopes: These microscopes have and
eyepiece lens for each eye. This allows the viewer to
see the object in 3D; they are used to look at objects
that are too thick to allow light through.
Electron scanning microscopes: These are the most
powerful microscopes; they can magnify objects over
a million times. They use magnets to bend beams of
electrons to magnify objects.

2. Compound, simple, and stereomicroscopes use lenses
to create the magnification. The type of lens they use
is a convex lens.
There are two basic types of lens: Convex which
is thicker in the middle than on the edges, this lens
magnifies and also will flip images.
And concave, these lenses are thicker on the edges
than in the middle.
To figure out the magnification you multiply the
eyepiece, usually 10x by the objective printed on the
side of the lens.
Draw the first one in your notes