The use of 1 Microscopes

Name: Khulud Abdulaziz Nazer
ID: U00045236

September 23 2014
General biology lab

Section: 13 T
Instructor: Tasneem Obaid

Introduction:

Microscopes are instruments used to enlarge objects that are too small to be seen by one’s eyes.
Microscopy is the science of the examination of small objects using microscopes.
Technically we have two types of microscopes, the optical microscope which was first invented in late 1500s. It uses light and glass lenses (objectives) to magnify the image of an object up to 4X, 10X, 40X and a 100X. The second type is the electron microscope which was developed at early 1900s, it uses an electron beam in the place of light and electromagnets in the place of objectives to allow a much higher resolution up to two million times.
In this experiment we will be using the optical microscope and not the electron microscope to examine specimens, as it is available in almost all the laboratories. In addition, the costs of the optical microscope is too low compared to that of the electron microscope. Moreover, the optical microscope can be stored in normal room temperature and pressure not requiring a vacuum as the electron one does.

Materials:
Compound light microscope and stereomicroscope.
Prepared dry mount of the letter “e” .
A plug.

Method:
First of all, we used a compound light microscope to assess the letter “e”.
We followed the following procedure;
A slide of dry mount of letter “e” was previously prepared. The letter was first observed by the naked eye and a sketch of it was made.
We made sure that the compound light microscope cable was in the electricity plug and the power of the microscope was on. As for the light of the microscope.

The 4X objective was chosen by spinning the nosepiece.
We altered the clips by lying the specimen slide down on the stage.
By using