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The ocular and objective
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Which component of the microscope is found directly under the stage and contains two sets of lenses that collect and concentrate light as it passes upward from the light source into the lens systems?
Abbe condenser
Who discovered a microscope?
During the 1st century AD (year 100), glass had been invented and the Romans were looking through the glass and testing it. They experimented with different shapes of clear glass and one of their samples was thick in the middle and thin on the edges. They discovered that if you held one of these "lenses" over an object, the object would look larger. Someone also discovered that you can focus the rays of the sun with one of these special "glasses" and start a fire. These early lenses were called magnifiers or burning glasses. The word lens by the way, is derived from the latin word lentil, as they were named because they resembled the shape of a lentil bean (look up lens in a dictionary). These lenses were not used much until the end of the 13th century when spectacle makers were producing lenses to be worn as glasses. The early simple "microscopes" which were really only magnifying glasses had one power, usually about 6X - 10X . One thing that was very common and interesting to look at was fleas and other tiny insects. These early magnifiers were hence called "flea glasses". Sometime about the year 1590, two Dutch spectacle makers, Zaccharias Janssen and his father Hans started experimenting with these lenses. They put several lenses in a tube and made a very important discovery. The object near the end of the tube appeared to be greatly enlarged, much larger than any simple magnifying glass could achieve by itself! They had just invented the compound microscope (which is a microscope that uses two or more lenses). Galileo heard of their experiments and started experimenting on his own. He described the principles of lenses and light rays and improved both the microscope and telescope. He added a focusing device to his microscope and of course went on to explore the heavens with his telescopes. Anthony Leeuwenhoek of Holland became very interested in lenses while working with magnifying glasses in a dry goods store. He used the magnifying glass to count threads in woven cloth. He became so interested that he learned how to make lenses. By grinding and polishing, he was able to make small lenses with great curvatures. These rounder lenses produced greater magnification, and his microscopes were able to magnify up to 270X! Anthony Leeuwenhoek became more involved in science and with his new improved microscope was able to see things that no man had ever seen before. He saw bacteria, yeast, blood cells and many tiny animals swimming about in a drop of water. From his great contributions, many discoveries and research papers, Anthony Leeuwenhoek (1632-1723) has since been called the "Father of Microscopy". Robert Hooke, an Englishman (who is sometimes called the "English Father of Microscopy"), also spent much of his life working with microscopes and improved their design and capabilities. Little was done to improve the microscope until the middle of the 19th century when great strides were made and quality instruments like today's microscope emerged. Companies in Germany like Zeiss and an American company founded by Charles Spencer began producing fine optical instruments. Today, there are no microscope manufacturers in the US and most of the microscopes come from Germany, Japan and China. Toy plastic microscopes should be avoided as they do not achieved the level of quality of the basic instruments with metal frames and glass lenses. Because of foreign production, quality microscopes have become affordable for all. Zaccharias Janssen, the inventor of the microscope would marvel at the quality of even the most basic microscopes found in schools today.
What discoveries have been made using a microscope?
The discovery of cells was found by the use of a microscope, the discovery found that all living things are made of cells.
You have an old magnifying glass with cindo France on it how do you find out its origin?
I have one too. Have you found anything about it?
What is parfocal capability?
lenses: set up or arranged so that when one lens is changed for another, there is no change in focus. * Applied usually to turret mounted lenses e.g. on microscope; also in telescopes: ~ eyepieces: changing one for another does not require refocusing. * When the distance from the object to the rear principal plane of each lens is equal, they are said to be parfocal.
What kind of lenses are found in magnifying glass?
Convex lenses
What are the lenses found in a light microscope?
the zoom the tester the power and the light
How is a simple microscope and a compound microscope different?
The difference lies in the number of lenses that each microscope has. A compound microscope has 2 or more lenses, like those found in most science classrooms. A simple microscope uses only 1 lens.
Where is lanthanum found today?
In lighting,microscope and camers lenses, and pool cleaners
What are the lenses found in a light microscope called?
the zoom the tester the power and the light
Can fresnel lens can be found in magnifying glass?
A fresnel lens is a type of magnifying glass itself. NOT the most familiar type like sherlock holmes used. You can find fresnel lenses stuck to the back window of vans, in lighthouse lenses. any magnifying lens that has concentric ridges to achieve the magnification effect only using a thin lens.
What things use convex lenses?
You know those microscopes? Well, you probably do. A convex lens can be found in a microscope. Concave AND convex are both used in this item. You can also check www.brainpop.com on microscopes depending on your age (3-5 grades). It sadly cost money. There are also farsightedness glasses that use convex lenses. And you might've guessed, nearsightedness glasses use concave. Magnifying glasses are of convex lens use, too. Then there's also contact lenses. Magnifying glasses, telescopes, vehicle mirrors and more mirrors in hospitals and other building use these lenses. Sorry if this paragraph was too long but I hope this was helpful!
What is the magnification of ocular 5x by objective 10x?
The total magnification of a microscope is found by multiplying the ocular and objective together.
Is a eyepiece and objective the names of different lenses found on a microscope?
First of all, it's an eyepiece and objectives, and second of all, yes.
Who designed the microscope?
The term microscope technically applies to any magnifying arrangement of lenses, one or many. Single lens magnification has been known since about 1000 AD and no inventor is recorded by history. Around 1590, several individuals compete for recognition as the inventor of the compound microscope which is a microscope using two or more lenses. See the link below to the related question, "Who invented the microscope?" About 1670, Anton van Leeuwenhoek dramatically increased the magnifying power of the simple microscope.
What kind of lenses are found in magnifying glasses and in the human eye?
The lens found in both the magnifying glass and human eye are called the convex lens. The convex lens can form real images and virtual images. In the magnifying glass the convex lens helps it form of an object that are larger or smaller tjan the object is. In the human eye, it helps focus the light on the back surface, or retina, of tje eye.
What kind of lenses are found in magnifying glass and in the human eye?
The lens found in both the magnifying glass and human eye are called the convex lens. The convex lens can form real images and virtual images. In the magnifying glass the convex lens helps it form of an object that are larger or smaller tjan the object is. In the human eye, it helps focus the light on the back surface, or retina, of tje eye.
