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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
Which objectives of microscope covers a wider field?
Low power objectives cover a wide field of view and they are useful for examining large specimens or surveying many smaller specimens. This objective is useful for aligning the microscope. The power for the low objective is 10X.
How powerful is an electronic microscope?
An electronic microscope's strength depends on if it's a light microscope or an electron microscope.
A light microscope can only perform a few thousand times magnification but an electron microscope can go into many hundreds of thousands of times magnification.
What are two procedures to properly handle the light microscope?
Put your one hand on the base and the other on the arm, and put your microscope on a flat surface.
What is the circle of light you see when you look through the microscope is called?
The circle of light you see when you look through a microscope is called the field of view. It represents the area of the specimen that you can see through the microscope's lenses at one time.
What are the advantages and disadvantages of stereo microscopes?
advantages:
you can clearly see the color of the object.
you can use living samples
it requires little or no preparation of the sample
disadvantages:
uses low magnification
What part of microscope helps adjust the brightness of an image?
The condenser is the part of a microscope that helps adjust the brightness of an image. By adjusting the position and intensity of the condenser, the amount of light that passes through the specimen can be controlled, which affects the brightness of the image.
To ensure optimal viewing of cells through a microscope, you can adjust the focus by fine-tuning the microscope's focus knobs until the cells appear clear and sharp. Additionally, adjusting the light intensity can help improve the contrast and visibility of cellular structures.
How many microscopes did Zacharias Jansen create in his lifetime?
Zacharias Jansen, a Dutch spectacle-maker, is credited with inventing the first compound microscope along with his father, Hans Jansen. They likely only created a few microscopes during their lifetime, and the exact number is not known.
How do you take reading in traveling microscope?
let us think with all our common sense.
The indicator which reads the reading on the main scale is the zero mark on the vernier.
On the main scale each mm is divided into half mm. Hence the reading would be read for divisions on the main scale. ie say I start from 3 cm.
3 cm, 3.05 cm, 3.1 cm, 3.15 cm, 3.2 cm, 3.25 cm and so on.
But for our convenience let us read as 3.000 cm, 3.050 cm, 3.100 cm, 3.150 cm, 3.200 cm, 3.250 cm and so on,
Now say your indicator ie zero marking on the vernier is lying in between say 3.200 and 3.250 cm. Then main scale reading would be recorded by taking the lower value namely 3.200 cm.
Now the vernier would give the last two decimal values for accuracy. If the 43rd division on the vernier get coincided with some line on the main scale, then the vernier reading will be got by multiplying this vernier coincidence 43 by the least count. The least count will usually be 0.001 cm.
So the vernier scale reading will be 0.043 cm
Now by adding this along with the main scale reading ie 3.200 cm we get 3.243 cm.
Another example: If suppose the indicator lies in between 6.450 and 6.500. The vernier division 17 get coincided.
Main scale reading is 6.450 cm
Vernier scale reading is 0.17 cm
So the total reading ie accurate reading is 6.467 cm
UNNATI CHANDANE
STD:XII
Who was zacharias janssen brother who help to discover the microscope?
hans janssen is the brother of zacchariah janssen
What are the uses of microscopes in everyday life?
WWhatever you want to use it for is it in school medicine scientists ect...
How do simple and compound light microscopes compare?
Well...... for starters.... a simple microscope has only one lens and a compound light microscope has more than one lens. They both magnify objects (or specimen) and make them seem larger than they actually are.
Well that's all I got........ Buh-Bye!
What did van Leeuwenhoek first look at with the microscope?
Short Answer:
Antonie (Anton) van Leeuwenhoek first looked at cloth in a microscope.
More interestingly, we know from a letter dated April 28, 1673, the first report of a scientific subject. In this van Leeuwenhoek described that he had seen mold, bees, and lice, but that was just the beginning of 50 years of microscope investigations.
Long Answer:
Van Leeuwenhoek was using a microscope in his trade looking at cloth since he was an apprentice to a cloth merchant at 16 years old. He had to wait 20 more years for the instrument of his trade to be transformed into the instrument for his legacy in science.
His interests in the microscope matured and by 1668 he had learned to make polish his own lenses. About 1670, he discovered a method of making very small spherical lenses capable of a magnification far exceeding the best compound microscopes in the world. He used and improved this to begin wide ranging investigations of many subject, including plants, animals and insects.
An acquaintance realized that his observations were truly the best of their kind in the world and got van Leeuwenhoek to write a description which his associate would send to the Royal Society of London.
History has save this letter, dated April 28, 1673, in which van Leeuwenhoek described three things that he had seen using his hand-made microscopes: mold, bees, and lice.
That is the first recorded observation by van Leeuwenhoek his new microscopes.
To learn about the single celled "animalcules," the world had to wait until October, 1676, when the Royal Society received another letter from van Leeuwenhoek saying, "In the year of 1675 I difcover'd living creatures in Rain water...."
What are some positive things about a microscope?
It shows us, through means of zooming in very much, little organisms.
Cells, bacteria and viruses are shown with a microscope as well.
But the most positive thing is that it has proven to people (1800) that the germ theory of disease really was true by means of showing proof that bacteria and viruses really are 'existing'.
When you are scanning documents in iperms what must you do before finishing a batch?
Make sure all documents were scanned
The focusing of attention on selected aspectsof the environment and the bloking out of others is?
Selective attention, a cognitive process that allows individuals to focus on specific stimuli while ignoring others. This helps in filtering out irrelevant information and maintaining concentration on the task at hand.
Why is the image in the microscope reversed?
It is all about the lenses in the microscope.
The fewer lenses, the less does it cost to produce.
Every focal lens used will reverse the image.
One focal lens will reverse. a second one will make it right again. a third one will reverse yet again. Every step of a lens might distort the immage though, depending solely on the quality of it. Simple is often good enough, and a reversed immage does not really mean that much. Tricky to align and find your samples but doable :-)
It depends on the microscope and how many focal lenses that are actually at play.
There are microscopes available that do not reverse the image though.
Lens just above specimen on a microscope?
When the lens is placed just above the specimen on a microscope, it allows for closer examination and magnification of the specimen. This positioning helps to focus light from the specimen, providing a clearer and more detailed view. Adjusting the distance between the lens and the specimen can help achieve optimal magnification and resolution.
Give an advantage and a disadvantage of using online or virtual microscopes?
Advantages of virtual microscopes include the fact that they're a great learning tool, and they require no maintenance. Disadvantages include the fact that the samples are not able to be rescanned, and the ability to manipulate images is limited.
