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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
Who invented the first optical microscope?
The first optical microscope was invented by Zacharias Janssen and his father Hans in the late 16th century. They were spectacle makers from the Netherlands and created the microscope by combining lenses in a tube.
What did the invention of the microscope made possible?
The invention of the microscope made it possible to observe and study tiny structures such as cells, microorganisms, and molecules that were previously invisible to the naked eye. This breakthrough revolutionized fields like biology, medicine, and materials science by providing a deeper understanding of the natural world at a microscopic level.
Why do things look upside down in the microscope?
its because the lens of the microscope is convex. this means that it is curved a little bit, like the lenses of glasses. this causes the image to appear upside down.
try looking into the curved part of a spoon from both sides. one side your reflection is normal, but on the other side your reflection is upside down, because of concave and convex. The side where you see your reflection normal is concave, and the side where it is backwards is convex.
hope i helped!
What one lens microscope did Anton van Leeuwenhoek make?
Short Answer:
Antonie (Anton) van Leeuwenhoek made innovations to the simple one lens microscope making it perform much better than existing compound microscopes.
His microscopes received no special name, just "simple microscope." Van Leeuwenhoek always referred to his instrument as a Vergroot-glas, which translates into magnifying glass.
His microscopes consisted of one small glass sphere, just over a millimeter wide, and the device to hold the lens and specimen made from brass, copper or silver, that was the size of a human hand. Both lens and holder were fabricated by entirely by van Leeuwenhoek.
His breakthrough occurred around 1670, when he invented a method for making smaller spherical lenses with much greater magnification; the best in the world at the time. He ultimately discovered single celled microorganisms and other microscopic structures of plants, animals and minerals.
More:
Anton van Leeuwenhoek, (October 24, 1632 -- August 26, 1723) is given the title of "the Father of Microbiology" and sometimes "the Father of Microscopy" though biographers of Louis Pasteur or Zacharias Janssen sometimes award the same titles to them. Van Leeuwenhoek was from Delft, the Netherlands. He was not trained in science, but was a tradesman who regularly employed a microscope to view the weaving of fine cloth.
The date is not known precisely, but around 1670, van Leeuwenhoek discovered a way to make small spherical lenses of very high magnification that went significantly beyond the capability of existing compound microscopes that were limited to 30 times magnifying power. Eventually he would make lenses over 250 times magnifying power.
He is considered to be the first microbiologist because of his scientific discoveries made possible by his enhanced microscopes. He was the first person to observe and describe single celled organisms, including protozoans, sperm and bacteria. He was a contemporary of Robert Hooke and the two men share some credit for establishing that living things were made of cells.
After discovering the secret for making small spherical lenses, van Leeuwenhoek went on for 50 years making over 500 optical lenses and around 200 microscopes. The microscopes represent at least 25 variations on his basic design. Nine of these microscopes, as well as a few of his original specimens, exist in museums today.
The compound microscope was invented by Zacharias Janssen in the late 16th century, although others like Hans and Zacharias Janssen, Hans Lippershey, and Hans Martens claim to have contributed to its development. The electron microscope was later invented in the 20th century by Ernst Ruska and Max Knoll.
What microscope did van Leewenhoek use?
Short Answer:
Anton van Leeuwenhoek made innovations to the simple microscope with a single lens. His microscopes received no special name and were enhancements of the "simple microscope."
Anton van Leeuwenhoek always referred to his instrument as a Vergroot-glas, which translates into magnifying glass.
He also enhanced the overall design of the simple microscope and specimen holder. He constructed at least 25 different designs of the simple microscope. (He rarely used the compound microscope which had been invented 40 years before his birth because his simple microscopes had far greater magnification.)
More:
Anton van Leeuwenhoek, (October 24, 1632 -- August 26, 1723) is known as "the Father of Microbiology". He was from Delft, the Netherlands. He was not trained in science, but was a tradesman who first employed a microscope to view fine cloth.
The date is not know precisely, but around 1670, van Leeuwenhoek discovered a way to make small spherical lenses of very high magnification that went significantly beyond the capability of existing microscopes.
He is considered to be the first microbiologist because of his scientific discoveries made possible by his enhanced microscopes. He was the first person to observe and describe single celled organisms. He was a contemporary of Robert Hook and the two men share some credit for establishing that living things were made of cells.
Beyond the discovery of the methods for making small spherical lenses, van Leeuwenhoek also built microscopes and experimented with their design, addressing the difficult problems of illuminating, holding and viewing the specimens.
He made over 500 optical lenses, though they did not necessarily go into 500 different microscopes. The microscopes themselves were expensive and time consuming to construct, but records indicate possibly as many as two hundred were made. In this process he is said to have created at least 25 variations on the basic design of the microscope.
Only nine of his microscopes are known to exist today.
What year did Anton Van Leeuwenhoek invent the microscope?
Anton van Leeuwenhoek did not invent the microscope.
The compound microscope was invented 40 years before Anton van Leeuwenhoek was born. The simple microscope was known 300 years earlier.
Anton van Leeuwenhoek invented a method for making small spherical lenses that much increased the magnification of simple microscopes.
The date is not know precisely, but around 1670, more than half a century after the discovery of the compound microscope, van Leeuwenhoek discovered a way to make small lenses of very high magnification that went significantly beyond the capability of existing microscopes.
He advanced the design of the simple microscope.
He used his inventions to make great discoveries into the world of microorganisms.
How is gram staining useful to health care workers?
The gram stain will stain a bacterium then a particular antibiotic might be effective against it. If the gram stain will not stain that particular bacterium, then that particular antibiotic will not be effective against it.
Thus a gram negative bacterium like TB requires a different antibiotic than a gram positive bacterium.
However, if several have formed a film, it may contain many types and it becomes harder to kill them. That may require a broad based antibiotic.
Anthony Van Leeuwenhoek was the first to observe microorganisms using his self made microscope. He discovered bacteria such as those in form of plaque B/W the teeth and many those which live in the pond
--another wiki.answers question
What is the microscope's field of view?
It is the area that you see when looking through the microscope. The field of view depends on the strength of magnification. The lower the power the larger the field of view.
What is the function of the eyepiece of a microscope?
The function of the eyepiece is to allow us to observe the specimen in a microscope. It multiplies and adjusts the magnification of the objective lenses. Sometimes, it even corrects aberrations of the objective lens.
Antonie van Leeuwenhoek studied microscopic organisms, including bacteria, protozoa, and sperm cells. He is known as the Father of Microbiology for his pioneering work in observing and describing these microorganisms.
Antonie Philips van Leeuwenhoek (in Dutch also Anthonie, Antoni, or Theunis, in English, Antony or Anton) [1] (born on October 24, 1632 - baptized on November 4, and buried on August 30, 1723) was a Dutch tradesman and scientist from Delft, the Netherlands. He is commonly known as "the Father of Microbiology", and considered to be the first microbiologist. He is best known for his work on the improvement of the microscope and for his contributions towards the establishment of microbiology. Using his handcrafted microscopes he was the first to observe and describe single celled organisms, which he originally referred to as animalcules, and which we now refer to as microorganisms. He was also the first to record microscopic observations of muscle fibers, bacteria, spermatozoa and blood flow in capillaries (small blood vessels). Van Leeuwenhoek never wrote a book, just letters.
From Wikipedia; see http://en.wikipedia.org/wiki/Anton_van_Leeuwenhoek
What is Dark field microscopy?
Dark field microscopy (dark ground microscopy) describes microscopy methods, in both light and electron microscopy, which exclude the unscattered beam from the image. As a result, the field around the specimen (i.e. where there is no specimen to scatter the beam) is generally dark.
Who developed one of the first compound microscopes by putting several lenses in one tube?
Zacharias Janssen is the right answer, if your doing the cross word,(:
Leeuwenhoek is known to have made over 500 "microscopes," of which fewer than ten have survived to the present day. In basic design, probably all of Leeuwenhoek's instruments -- certainly all the ones that are known -- were simply powerful magnifying glasses, not compound microscopes of the type used today. A drawing of one of Leeuwenhoek's "microscopes" is shown at the left. Compared to modern microscopes, it is an extremely simple device, using only one lens, mounted in a tiny hole in the brass plate that makes up the body of the instrument. The specimen was mounted on the sharp point that sticks up in front of the lens, and its position and focus could be adjusted by turning the two screws. The entire instrument was only 3-4 inches long, and had to be held up close to the eye; it required good lighting and great patience to use. Compound microscopes (that is, microscopes using more than one lens) had been invented around 1595, nearly forty years before Leeuwenhoek was born. Several of Leeuwenhoek's predecessors and contemporaries, notably Robert Hooke in England and Jan Swammerdam in the Netherlands, had built compound microscopes and were making important discoveries with them. These were much more similar to the microscopes in use today. Thus, although Leeuwenhoek is sometimes called "the inventor of the microscope," he was no such thing. However, because of various technical difficulties in building them, early compound microscopes were not practical for magnifying objects more than about twenty or thirty times natural size. Leeuwenhoek's skill at grinding lenses, together with his naturally acute eyesight and great care in adjusting the lighting where he worked, enabled him to build microscopes that magnified over 200 times, with clearer and brighter images than any of his colleagues could achieve. What further distinguished him was his curiosity to observe almost anything that could be placed under his lenses, and his care in describing what he saw. Although he himself could not draw well, he hired an illustrator to prepare drawings of the things he saw, to accompany his written descriptions. Most of his descriptions of microorganisms are instantly recognizable. In 1673, Leeuwenhoek began writing letters to the newly-formed Royal Society of London, describing what he had seen with his microscopes -- his first letter contained some observations on the stings of bees. For the next fifty years he corresponded with the Royal Society; his letters, written in Dutch, were translated into English or Latin and printed in the Philosophical Transactions of the Royal Society, and often reprinted separately. To give some of the flavor of his discoveries, we present extracts from his observations, together with modern pictures of the organisms that Leeuwenhoek saw.
http://www.ucmp.berkeley.edu/history/leeuwenhoek.html
What does field of view mean of a microscope?
Field of view refers to the diameter of the area visible when looking through a microscope. It is determined by the microscope's objective lens and eyepiece combination. A larger field of view allows for more of the specimen to be seen at once, while a smaller field of view provides higher magnification but less visible area.
Are telescopes and microscopes used by astronomers?
Telescopes are commonly used by astronomers to observe objects in space such as planets, stars, and galaxies. Microscopes are not typically used by astronomers as they are designed for studying very small objects on Earth, such as cells and microbes.
A microscope used for viewing things through which light cannot pass is a?
A dark-field microscope. This type of microscope uses scattered light to enhance contrast and allow for the visualization of transparent or translucent samples that would be difficult to see using bright-field microscopy.
Who invented the first light microscope?
The first light microscope was invented by the Dutch spectacle-maker Zacharias Janssen and his father Hans in the late 16th century. They were able to achieve magnifications up to 10 times using their design.
Scientists use light in various ways for research and experimentation. They use light to study the properties of materials, analyze samples through spectroscopy, and image objects with microscopes. Light is also used in communication technologies such as fiber optics for data transfer.
Antonie van Leeuwenhoek was a Dutch scientist who is known for his improvement and use of the microscope to observe microorganisms, which laid the foundation for the field of microbiology. He is credited with discovering bacteria, protists, and sperm cells, greatly advancing our understanding of the unseen world.
A compound microscope consists of two lenses: an objective lens close to the specimen and an eyepiece lens that magnifies the image further for the viewer. The objective lens gathers light from the specimen and forms an enlarged image, which is then magnified by the eyepiece for viewing. This combination of lenses allows for higher magnification and resolution than with a single lens.
Which parts of the microscope controls the brightness?
The brightness on a microscope is controlled by the light source, usually a light bulb or LED located beneath the stage or within the body of the microscope. The intensity of the light can be adjusted using a control knob or dial typically located on the base or body of the microscope.
