Microscopes

Microscopes are used to look at things that are not visible to the naked eye. This category would demonstrate how microscopes work and information about different kinds of microscope.

6,336 Questions
Microscopes

What is the minimum size of the organism which could be seen under microscope?

Depends, optic microscopes don't see much smaller than a nucleus very well, organelles such as mitochondria are seen as specks if you have a good microscope. To see more detail, you need an electron microscope (transmission or scanning), with which you can even see objects as small as viruses.

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Microscopes

Can you change a microscope eyepiece?

No.

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Microscopes

What was the name of a microscope?

Occhiolino

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Microscopes

What are the bad things about microscope?

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Microscopes

Who made better lenses for the microscopes?

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.

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Physics
Atoms and Atomic Structure
Microscopes

Why electron microscope is used to visualize atom?

The electron microscope is the only device, today, that has the magnification and resolution required to see an individual Atom. Nothing else would work.

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Units of Measure
Technology
Microscopes

Why is a cover slip on a microscope important?

The cover slip - serves two purposes. (1) it excludes air from the specimen (air shows up as dark 'blobs' under a microscope. (2) it holds the specimen in place by capillary action.

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Microscopes

What is the function of eyepiece lens in microscope?

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Microscopes

What are the advantages and disadvantages of an electric microscope?

Advantages: You can see incredibly small particles with its intense magnifying power (up to about 20,000 times)

Disadvantages: Using EM's, you cannot view objects/organisms in live color, or in a live state (shooting thousands of electrons at incredibly high speeds just doesn't agree with living systems)

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Bacteria
Viruses (biological)
Microscopes

What 4 things bacteria does to help us?

agrhhretj

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Microscopes

What was the first name of the microscope?

A Pen15

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Microscopes

What is a good brand of microscope for kids?

A good brand of microscopes for kids is "My First Lab." These microscopes are fairly inexpensive so that if they break they are easy to replace but still function well and keep children entertained.

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Microscopes

What are some useful applications for a pocket microscope?

Some of the best and most useful applications for a pocket microscope are typically in an instruction setting. Children are best suited for these types of microscopes as they can learn during science classes, for field trips, and other endeavors. These microscopes are versatile enough for medical personnel as well.

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Microbiology
Microscopes

Why was an electron microscope made?

to see smallstuf such as your penis

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Microscopes

What is the total magnification for STM microscopes?

Higher than 10 million

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Genetics
Microscopes

Can you see a actin through a light microscope?

No, you need a florescent microscope to see that.

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Microscopes

Can you use a microscope to look at your finger?

With a normal light microscope, you can't look directly at your finger. It's just too thick for light from underneath to pass through, to reach the microscope lenses. It might be possible to scrape off thin layers of dead skin and put them on a slide to view through a microscope, though.

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Microscopes

What would make an object under a microscope look bigger 10X or 40X?

40X.

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Microbiology
Microscopes

Why does the microscope image move to the right when the slide move to the left?

Because of how the lens and mirrors are set up.

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Microscopes

Which color has maximum resolving power while used in a microscope?

Possibly a blue or violet colour.

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Microscopes
Cell Biology (cytology)

What is the color of the inside of a plant cell?

It's transparent, except where they naturally have coloured organelles such as chloroplasts or starch granules.

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Microscopes

How much would a stereo zoom microscope cost?

Stereo zoom microscopes start at around two hundred to three hundred for a basic unit. If you want a higher quality unit, expect to pay several times more, twelve hundred, thirteen hundred, if not more.

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Microscopes

Where are Meiji Microscopes manufactured?

Meiji branded microscopes are manufactured in Japan. They are regarded as a very high quality microscope. Laboratories and jewelers use these microscopes.

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Viruses (biological)
Microscopes
Cell or Plasma Membranes

Can light microscopes be used to see living organisms?

Light microscopes can see some living organisms. The best resolution is about 1,000X. Human cells and tissues can be seen using this microscope.

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Microscopes
Cell Biology (cytology)

What are the different organelles made of?

Organelles are composed of various organic compounds, such as proteins and lippo-proteins.

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