Libyan Veterinary Website

A journey of a thousand miles
starts with one step

The Microscope How to Use It Add Video

Microscope: How to Use It and Enjoy It describes the history and use of the microscope. Before the microscope was invented, people thought there was nothing smaller than the smallest things that could be viewed with the human eye. Then early microscope designers like Robert Hooke changed all that. Robert Hooke made a microscope out of two lenses placed at opposite ends of a long tube. The tube was attached to a stand, and an oil lamp provided light. Hooke also added a mirror to focus the light onto the object being examined. He used his microscope to magnify visible things like fleas. Other scientists began examining living things, called microorganisms, that were never seen before. Today, most microscopes are called compound microscopes, and use two lenses for greater magnification. The upper lens is called the ocular lens or eyepiece, and the lower lens (or lenses, as there may be a choice of sizes) is called the objective lens. When an image is formed it is actually magnified twice. First, the image is formed at the bottom by the objective lens. Then the image is projected through a tube and magnified again by the eyepiece at the top. The image is always upside down, so what you see through a microscope shows up as the opposite of what you are doing. Any movement of the object also shows up in the opposite way. When you move an object to the right, it appears to move to the left, and when you move it up, its image moves down. The book also explains how to use microscopes. To use a microscope, you need to place a slide or a specimen on the stage. You should make sure that it is sitting over the hole in the stage. The mirror below will reflect the light source you are using to light up your specimen. For safety reasons, you should never use a microscope in direct sunlight. This could hurt your eyes. Look through the eyepiece to see the specimen. If your microscope has more than one objective lens, then use the lens that shows you the clearest and largest view of the specimen. You can also turn the adjustment knobs until the image is clear. Try rotating the slide to see the specimen in different ways. Remember that you always need to keep both eyes open while looking into the microscope, because this will help you to avoid a painful condition called eyestrain.

Posted by Emhemmed on July 10, 2010 at 1:22 PM 2841 Views

Post a Comment


Oops, you forgot something.


The words you entered did not match the given text. Please try again.

Already a member? Sign In


Reply Jegoaffex
7:06 PM on February 12, 2022 
Onwoir Clomid Besoin D Aide Faire what is plaquenil used for
Reply Jegoaffex
5:05 PM on February 10, 2022 
Tbkpmv Articulo 43 Plaquenil Gene Therapy Few if any of the available pharmacological treatments for ED will improve the underlying causes of the disorder or cure the disease.
Reply Jegoaffex
3:42 PM on January 29, 2022 
Rwhwcg order hydroxychloroquine online
Reply Jegoaffex
9:59 AM on January 28, 2022 
Generic Macrobid Macrodantin Where To Purchase No Doctors Consult Plaquenil
Reply Nokirreks
1:20 AM on January 24, 2022 viagra plus cialis Oppora
Reply edgedia
8:49 PM on January 23, 2022 
buy prednisone withou prescription Bentyl Discount Quick Shipping Vienna Saoxii
Reply Nokirreks
6:02 PM on January 21, 2022 
Clobetasol Purchasing Cod Accepted levitra effet secondaire Swevemup
Reply amoumebug
4:24 PM on January 2, 2022 
express kamagra on line pharmacy cheapest kamagra england venta de kamagra en mexico
Reply amoumebug
4:37 PM on December 30, 2021 
precios de kamagra kamagra jalea kamagra turqoise
Reply is generic viagra good
1:03 PM on December 20, 2021 
Viagra Online Bestellen Apotheke
Reply viagra fertility
10:13 AM on December 19, 2021 
Offrir Amoxil
Reply buy methotrexate
9:46 AM on December 18, 2021 
Levitra Duration Of Effect
Reply gabapentin side effect
3:52 PM on December 9, 2021 
Bull 100tablets
Reply bideduami
5:32 AM on December 7, 2021 
cialis and viagra sales
Reply order hydroxychloroquine online
11:11 PM on December 6, 2021 
cialis levitra pharmacie en ligne
Reply edinlenue
6:14 PM on December 5, 2021 
neurontin generic
Reply cialis online no prescription
2:51 PM on December 5, 2021 
Buy Cialis 20mg
Reply EnquIvA
1:26 AM on December 5, 2021 
buy hydroxychloroquine amazon
Reply plaquenil for fibromyalgia
1:20 PM on December 4, 2021 
Priligy Mexico Costo
Reply Immurnwen
9:30 AM on November 21, 2021 
Cialis Laboratoire safe cialis online