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
Genetics
Microscopes

What type of microscope would allow the viewer to see ribosomes inside a cell?

A transmission electron microscope.

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Inventions
Patents and Patent Law
Microscopes

Who invented the carbon microscope?

Thomas Edison invented the carbon microscope from 1877 to 1878.

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Microscopes

Why would you never use the coarse adjustment knob on high power?

The coarse adjustment knob may move the lens too far too fast and the slide may crack and/or the object be squashed. Using the fine adjustment lens will bring the object into focus much more accurately. In addition, the coarse adjustment knob adjusts in too great a quantity. The fine is less responsive so its easier to adjust at high magnification.

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Skiing
Olympics Freestyle Skiing
Microscopes

What is the proper technique for skiing moguls?

You stare at the Black Diamond run in awe and excitement. It is steep and full of moguls. Moguls are large bumps and craters in the ski hill. You need to ski them properly or you are going to crash big time. The main thing is to keep your knees bent to prevent catching air. You also want to keep your core center in balance and use your poles and arms for additional balance. If you have seen this event on TV you will notice that the upper half of their body barely moves while their knees are bent to absorb any shocks. Professional mogul skiers also tend to have extensive knee problems. Avoid leaning back on your heels. When you do this you are setting yourself for take off up into the air. Also avoid leaning to far forward or you will fall head first into a mogul. Good luck!

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Biology
Microscopes

What is the purpose of viewing a cotton strand under a microscope?

It is to make sure that you know how to make a wet mount. At least, in honors biology it is

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Microscopes

Who was the scientist that first observed cells under a microscope?

Hooke

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Microbiology
The Difference Between
Microscopes

What is the difference between the monocular microscope and the stereo microscope?

Monocular has a lens for just one eye, stereo for two eyes to see simultaneously.

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Microscopes

What is the function of draw tube in the microscope?

Its function is to keep the eyepiece in place

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Biology
Batteries
Microscopes

What is the most important part of the microscope?

The true answer is lenses because lenses enlarge a specimen.

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Scientific Method
The Difference Between
Microscopes

What are differences between the light microscope and the electron microscope?

A light microscope uses a light source but a electron microscope has beams of electrons focused by magnetic lenses.

The major difference in practice is resolution: the amount of detail that can be discerned in the image. Under optimal conditions (excellent lenses, oil immersion) the resolution of a light microscope is about 0.2 micrometers (or 0.000,000,2 meters or 2 thousandths of a millimeter). Objects that are closer together cannot be detected as separate. The resolution of an transmission electron microscope is about 0.05 nanometers (or 0.000,000,000,05 meters or half of 1 millionth of a millimeter). This means that the electron microscope has about 10,000 times the resolving power of the light instrument, and can therefore show far greater detail, for example of subcellular structure.

Another difference of importance to biologists is that light microscopes (there are several kinds, such as bright field and phase contrast) enable the viewer to watch living cells. The electron microscope produces an image of the shadows cast by atoms of heavy metals used as stains; the living tissue is destroyed by the intense beam of electrons.

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Inventions
Biotechnology
Microscopes

How many different types of microscopes are there?

the solar system is made up of planets moons and the sun

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Microscopes

What mechanical part of the microscope holds the three objectives?

Objective lenses you can see 3 - 4 objective lenses attached to the end of the tube.

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Microscopes

Why whould you need a microscope to see a prokaryotic organism?

because it's too small to see with a regular eye.

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Microscopes

What part of the microscope contains the lens you look through?

The eyepeice

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Inventions
Microscopes

Who invented the compound microscope?

Zacharias Janssen and his son Johannes (Hans), spectacle makers in Holland, are usually credited with inventing the first compound microscope in about 1595. (Hans Lippershey a spectacle maker in the same city, Middelburg, Netherlands, also claimed credit for the invention but was perhaps more instrumental in the creation of the telescope.)

Two decades later, Galileo Galilei built a compound microscope and changed the lens design lens (convex and concave lens).

Galileo

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Science
Microscopes

How do microscopes produce magnifies images?

The concave and the convection of the lenses.

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Microscopes

What is part of a theater and part of a microscope?

Hhh

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Science
Spiders
Veins
Microscopes

What is the name of the person who discovered the first microscope?

Microscope was invented by ZACCHARIAS JANSSEN a DUTCHMAN in 1590. From 1632-1723 ANTON VAN LEUWENHOEK was getting better results with a powerful single lens, which he made himself. He was a dry goods dealer who made lenses as a hobby. Leuwenhoek kept his method of lens making a secret. After his death microscopic investigation slowed down because nobody knew how to make lenses as well as he did, 19th century lenses were perfected by the other scientists and they were able to look through clear microscopes again.

Zaccharias Janssen

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Microscopes

How did microscopes helped science?

Microscopes allow you to see substances in a closer up view. Microscopes help with discovering whats inside a small substance, such as a cell. If science did not have microscopes, we wouldn't know the basic function of a cell.

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Microscopes

What did Hooke and Leeuwenhoek discover about cells by using a microscope?

Leeuwenhoek discovered blood cells and recognized them as living units of life.

Hooke examined a thin slice of dead cork and observed box-like cubicles and called them 'cells'.

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Physics
Biology
Microscopes

Why does an image appear upside down under a microscope?

Normally the images are not upside down in modern microscopes.

The reason for image to appear upside down under a microscope can be if: The object to be viewed is placed between the lens & the focal length of the lens to give enlarged erect virtual image.This enlarged image is further viewed through a large focal length eye lens to give an inverted enlarged image.

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Inventions
Microbiology
Genetics
Microscopes

How does a compound microscope differ from a simple microscope?

Yes - they differ in the number of lens that they use. They are both forms of light microscopes, but a simple microscope uses one lens, and a compound microscope uses multiple lens. Compound microscopes are usually larger, heavier and more expensive.

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Microscopes

What are microscopes used for today?

== == Visual inspection of cells (bacterial, cell cultures), immuno-staining (localisation of a protein of interest), microinjection, ... Microscopes are still in use but modern ones often have sophisticated equipment attached, e.g. lasers and motors for object movement.

They are used in cytopathology (looking at pap smears and other specimens from any body site, smeared on glass slides, to search for cancer, precancerous cells, organisms) and pathology (looking at pieces of body parts that have been sliced very thinly and placed on glass slides and stained to search for disease processes). Some scopes are now even computer controlled for use in cytology/cytopathology. Check out Cytyc.com.

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Inventions
Biotechnology
Microscopes

What are the different types of microscopes?

There are many. Simple microscope, compound microscope, light microscope, scanning electron microscope, Transmission Electron Microscope, Dissection microscope, etc,but all together there are about 20 different types of microscopes.

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Biology
Microbiology
Genetics
Microscopes

How have microscopes helped us?

you can see bacteria and study viruses

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