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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.
4,322 Questions
What is the function of the body tube in microscope?
The body tube of a microscope separates the nose and eyepiece. It supports the eyepiece and allows the optics on the microscope to share a common axis.
What is a stage on a microscope?
A stage on a microscope is a flat platform where the specimen slide is placed for viewing. It usually has clips or a mechanical stage to hold the slide in place and allow for precise movement of the specimen under the objective lenses for observation.
What is the ability of a microscope to form images with fine detail?
Resolution is the ability of a microscope to form images with fine detail. It refers to the ability to distinguish between closely spaced objects in an image. High resolution means that the microscope can produce sharp, clear images with fine detail.
What proof do you have that living things are similar when viewed through a microscope?
When living things are viewed through a microscope, similarities can be observed in their basic cellular structure, such as the presence of cell membranes, cytoplasm, and organelles like nucleus and mitochondria. Additionally, the genetic material in cells, notably DNA, exhibits similarities across different living organisms. These shared characteristics suggest a common evolutionary origin for all living things.
What knob is turned to focus an image under low power on a compound lights microscope?
I'm pretty sure fine adjustment. But coarse adjustment also works. The power doesn't matter, There is ONE difference.
Coarse adjustment-
A knob that focuses the microscope on the specimen by RAISING and LOWERING the body tube of the scope.
Fine adjustment-
A knob that adjusts the HEIGHT of the body tube.
Why is a light microscope also called a compound microscope?
A light microscope is called a compound microscope because it uses multiple lenses (a compound of lenses) to magnify the image of a specimen. This allows for higher magnification and resolution compared to a simple microscope.
What is the microscope use for?
A microscope is used to magnify and study tiny organisms, cells, tissues, and structures that are too small to be seen with the naked eye. It is commonly used in biological, medical, and research fields to observe and analyze objects at a microscopic level.
What is the function of the objective in a microscope?
The objective on a microscope is comprised of a tube and one or more lenses, and may include a mirror as well. Its purpose is to gather and focus light, typically while magnifying the image, from the sample or object under study.
What did Robert hooke discover with a microscope?
Robert Hooke discovered and described cells in 1665 when he observed cork under a microscope. He coined the term "cell" to describe the small compartments he saw, which resembled the cells of a monastery. This discovery laid the foundation for the field of cell biology.
A microscope that uses electrons to examine a specimen is called a what?
A microscope that uses electrons to examine a specimen is called a transmission electron microscope (TEM). It has a higher magnification and resolution compared to light microscopes, allowing for detailed viewing of subcellular structures and particles.
What did robert hooke discover with his microscope?
Robert Hooke discovered and coined the term "cell" after observing the small structures in cork under his microscope. He also made other important biological observations, such as the structure of fossils and plant anatomy.
What proof do you now have that living things are similar when viewed through a microscope?
When viewed through a microscope, living things share common structures such as cells, organelles, and genetic material. These similarities suggest a common evolutionary origin and fundamental biological processes that are conserved across different species. Studying these similarities helps scientists understand the interconnectedness of life on Earth.
What are the advantages of using a microscope?
A microscope allows for magnifying small objects, enabling detailed observation at a microscopic level. This can help in scientific research, medical diagnosis, quality control in manufacturing, and various other fields where the fine details are important. Additionally, microscopes can reveal structures and phenomena that are not visible to the naked eye, providing deeper insights into the world around us.
What is the effect of microscope on people life?
Without the microscope we wouldn't know as much about cells as we do now with microscopes and we probably would be more prone to sickness considering that sickness has to do with cells fighting against virus' and the cure is hidden with the factors of the cell.
Who was the first person to see microorganisms under a microscope?
The first person to see microorganisms under a microscope was Antonie van Leeuwenhoek, a Dutch scientist, in the 17th century. He is often considered the father of microbiology for his groundbreaking observations of bacteria, yeast, and other microorganisms.
What are 10 facts about microscopes?
1. Yes
2. no
3. They are to view small things
4. Matthew Mooney obviously discovered them
5. Do u remember Hugh Pat?
6. their special move is the laser punch
7,8,9 & 10 they are all sluts
Can i see Sperm under microscope?
Yes, sperm cells can be seen under a microscope. They are typically stained with a dye to make them more visible. Sperm cells are very small, measuring about 5 micrometers in length, so a high-powered microscope is needed to observe them clearly.
What are the Function of magnifying parts?
Body - The frame of the microscope.
Body tube - Inside "tunnel" of the microscope.
Eyepiece - Where you look.Objective - That is the lens closest to the specimen.
Focus fine tuning knob - Allows you to focus the image at a smaller, finer rate.
Focus knob - Allows you to focus the image.
Ocular lens - That is the lens in the eyepiece.
Slides - Used for holding specimens.
Specimen - What you are viewing.
Stage - That is where the slide goes.
Stage clip - That is a clip or spring for holding the specimen slides.
Turret - Part that allows you to change objectives.
A microscope is a scientific instrument that magnifies objects that are too small to be seen by the naked eye. It allows scientists and researchers to study minute details of cells, tissues, microorganisms, and other tiny structures. Microscopes are essential tools in fields such as biology, medicine, chemistry, and materials science.
Microscope is important because it enables us to observe the tiniest things in our world that we cannot see in our naked eye. It is also one of the instruments used in making new medicines, further research in any fields of science,and etc.
What are the parts of a microscope and what do they do?
Eyepiece Lens: the lens at the top that you look through. They are usually 10X or 15X power.
Tube: Connects the eyepiece to the objective lenses
Arm: Supports the tube and connects it to the base
Base: The bottom of the microscope, used for support
Illuminator: A steady light source (110 volts) used in place of a mirror. If your microscope has a mirror, it is used to reflect light from an external light source up through the bottom of the stage.
Stage: The flat platform where you place your slides. Stage clips hold the slides in place. If your microscope has a mechanical stage, you will be able to move the slide around by turning two knobs. One moves it left and right, the other moves it up and down.
Revolving Nosepiece or Turret: This is the part that holds two or more objective lenses and can be rotated to easily change power.
Objective Lenses: Usually you will find 3 or 4 objective lenses on a microscope. They almost always consist of 4X, 10X, 40X and 100X powers. When coupled with a 10X (most common) eyepiece lens, we get total magnifications of 40X (4X times 10X), 100X , 400X and 1000X. To have good resolution at 1000X, you will need a relatively sophisticated microscope with an Abbe condenser. The shortest lens is the lowest power, the longest one is the lens with the greatest power. Lenses are color coded and if built to DIN standards are interchangeable between microscopes. The high power objective lenses are retractable (i.e. 40XR). This means that if they hit a slide, the end of the lens will push in (spring loaded) thereby protecting the lens and the slide. All quality microscopes have achromatic, parcentered, parfocal lenses.
Rack Stop: This is an adjustment that determines how close the objective lens can get to the slide. It is set at the factory and keeps students from cranking the high power objective lens down into the slide and breaking things. You would only need to adjust this if you were using very thin slides and you weren't able to focus on the specimen at high power. (Tip: If you are using thin slides and can't focus, rather than adjust the rack stop, place a clear glass slide under the original slide to raise it a bit higher)
Condenser Lens: The purpose of the condenser lens is to focus the light onto the specimen. Condenser lenses are most useful at the highest powers (400X and above). Microscopes with in stage condenser lenses render a sharper image than those with no lens (at 400X). If your microscope has a maximum power of 400X, you will get the maximum benefit by using a condenser lenses rated at 0.65 NA or greater. 0.65 NA condenser lenses may be mounted in the stage and work quite well. A big advantage to a stage mounted lens is that there is one less focusing item to deal with. If you go to 1000X then you should have a focusable condenser lens with an N.A. of 1.25 or greater. Most 1000X microscopes use 1.25 Abbe condenser lens systems. The Abbe condenser lens can be moved up and down. It is set very close to the slide at 1000X and moved further away at the lower powers.
Diaphragm or Iris: Many microscopes have a rotating disk under the stage. This diaphragm has different sized holes and is used to vary the intensity and size of the cone of light that is projected upward into the slide. There is no set rule regarding which setting to use for a particular power. Rather, the setting is a function of the transparency of the specimen, the degree of contrast you desire and the particular objective lens in use
Antonie van Leeuwenhoek popularized the use of the microscope in the field of microbiology. He was a Dutch cloth merchant who was the first to observe bacteria and describe red blood cells. His discoveries laid the foundation for the field of microbiology and changed our understanding of the microbial world.
What are the disadvantages of fluorescence microscope?
Cannot provide spatial resolution below the diffraction limit of specific specimen features
http://www.microscopyu.com/articles/fluorescence/fluorescenceintro.html
A phase-contrast microscope differs from a brightfield microscope by having a?
Phase-contrast microscope utilizes phase shifts in light passing through a transparent specimen to enhance contrast, making transparent objects more visible without staining. Brightfield microscopes rely on absorption of light by the specimen to create contrast, typically requiring staining to visualize transparent specimens effectively.
How many microscopes did Robert hooke invent?
Robert Hooke is credited with inventing the compound microscope, which used a series of lenses to magnify images. He did not invent multiple microscopes, but his work in improving the design of the compound microscope contributed to advancements in the field of microscopy.
