Student Microscope: 2013

Step Up Your Kid's Exploration With Student's Microscopes

By Edison Ramsey

Children are always curious. Take advantage of this curiosity to broaden their minds and let them explore nature and the world around them from a different perspective - through the lens of the microscope. Get them student's microscopes in Toronto, where microscopes of various types and makes are available.

Why a Student's Microscope for Your Kids?

A child's curiosity has to be sated or this hunger to know and appreciate the things around him can be stifled. A child's curiosity can lead him to wonder about the four Ws and one H - what, when, where, who, and how. If this curiosity is guided towards the discovery of nature, take them outdoors instead of pampering them with video games. The outdoors is a vast learning place; flowers, trees, and bugs are delightful specimens and much more if these are viewed from a student's microscope.

Reliable student's microscopes in Toronto beat a toy microscope but the latter would be fine to start young children on microscopy examination of their 'finds.' When they are a wee bit older and "wizened" in the art of microscopy, step up their interest with an honest-to-goodness microscope that raises magnification levels to new highs. Although a student's microscope is not a high powered instrument, it is a powerful tool that would open the children's eyes to nature.

Student's microscopes in Toronto schools and elsewhere are not the average high-powered microscopes used in professional and research laboratories. But these are great teaching tools. The microscope has dual focusing and offers fine focus. Slide a strand of cotton thread and let the kids see how the thread looks like when viewed under the microscope.

Explaining that the thread comes from the cotton plant and expounding the many uses of cotton furthers their understanding of plants and their importance in everyday life. The discovery leads to more interesting discoveries, which would later help them appreciate their biology lessons. One small microscope and it's a big leap towards your children's academic development and will shape their attitude towards the world around them.

You can rely on the student's microscopes in Toronto stores for durability and accuracy. This type of microscope has a built-in light, a top requirement when choosing a student's microscope. It is also easy to use because there is no need to complicate things. The point is arousing children's curiosity -- how plants and bugs look like when magnified 40x their actual size; you are not expounding cell division or molecular biology, though this will come later on.

Shopping for Student's Microscope

Price is not the sole factor when shopping for student's microscopes. Although this is cheaper than most microscopes, you can still find better deals because student's microscopes in Toronto are reasonably priced though high-end student's microscopes are available too for school labs.

If your purchase is intended or school use dealers of student's microscopes in Toronto provide hefty discounts for bulk purchases. For this school labs, the type of student's microscope will have higher magnification and can see through layers of the specimen.

Several brands of student's microscopes and educational microscopes are available. Many of these are imported from Germany, China, and other countries; all these brands follow strict standards for microscopy manufacture and come with a warranty. Should your microscope need professional repair, you can have it repaired or replace parts. For your children, the cheaper student's microscope will do and there's no time like now to start them the study of nature.

CanScope - complete solution for all your microscopy needs.
Contact: 1-877-56SCOPE(72673) or info@CanScope.ca

Give your children a different exciting experience and let them discover nature under the microscope. Student's microscopes in Toronto, educational microscopes in Toronto and microscopy accessories in Toronto are the best buys for quality and affordability. Visit CanScope.ca today for more information.

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Essential Parts of a Microscope

By Peter Emerson

The basic design of the microscope has not changed that much over time. They have evolved, but the basic concept is still the same. There are several key parts that many types of microscopes have in common. All of the parts of a microscope must function properly for the microscope to work well. If one part is substandard, it can render the microscope useless. The major parts of a microscope are the lenses, the arm, the tube, the illuminator, the stage, and the adjustment knobs.

There are two kinds of lenses on a microscope. The eyepiece lens, also known as the ocular lens is at the top of the microscope. This is the part that people look through. The ocular lens is not adjustable on most models. The objective lens provides much of the microscope's magnification. A microscope usually has a few different objective lenses that vary in strength. The objective lenses are contained on a circular part placed between the eyepiece and the stage. Different objective lenses are chosen based on their strength. When someone wants to use a different strength of objective lens, they turn the circular disk to put another lens over the stage.

Other than the lenses, the other parts of a microscope are the tube, the arm, the stage, the illuminator and the adjustment knobs. The tube connects the ocular lens and the objective lens. People look through the ocular lens and tube and see out of the objective lens at the bottom. The arm connects the lenses and the stage. It protrudes to the side and provides a handle to carry the microscope as well. The stage is where the object is placed for examination. Stage clamps secure the microscope slides to the stage. The microscope slides contain specimens such as blood or other liquids. The illuminator is below the stage. This part provides light to make the specimen easier to see. The illuminator is either an actual light or a mirror.

Most microscopes feature two adjustment knobs to help focus the lenses. The coarse adjustment knob is the larger of the two and brings the lens and the stage closer together. The fine adjustment knob is smaller and is used after the coarse adjustment knob to provide any small adjustments to bring the item into sharp focus.

These parts of a microscope are common to nearly all models. Some microscopes use slightly different parts. For example, electron microscopes use electron beams instead of illuminators.

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Types of Microscopes

By Peter Emerson

Microscopes range from the simple single lens microscope to the sophisticated ones with imaging systems. Microscopes differ on the basis of their resolution, magnification, illumination method, type of image, field of view, degree of automation etc.

Depending on the radiation source, microscopes can be broadly classified as light, electron and confocal. Light microscopes utilize visible light as the radiation source. Light microscopes can be again classified into stereo microscopes and compound microscopes. Stereo microscopes are commonly known as dissection microscopes, which can provide a 3-dimensional view of the object. Compound microscopes provide a 2- dimensional view of the objects that can be used for laboratory purposes. Phase contrast microscopes and dark field microscopes modify the principles of light microscopy to enhance visual quality of the specimen. Oil immersion microscopes use oil between the lens and specimen to increase the magnification.

Electron microscopes are sophisticated types, which use a stream of electrons as the radiation source instead of light. These can ensure higher levels of magnification and are used effectively in the fields of geology, medicine and archaeology. Transmission electron microscope is used to magnify the internal details of a specimen using an electron beam. The 3 dimensional image of the specimen's surface can be analyzed using scanning electron microscope. Scanning transmission electron microscope is a modification of TEM, which scans the object at a faster rate. Confocal microscopes are highly automated, and utilize laser as the radiation source. Fluorescence microscopes excite the dyed specimen with particular radiation to provide a brighter image.

Scanning probe microscopes are a group of microscopes, which form images by scanning the specimen using a physical probe. Scanning probe microscopes mainly include scanning tunneling microscopes, atomic force microscopes, near-field scanning optical microscopes etc. These have great applications in nanotechnology. Microscopes based on magnetic force, microwave, acoustics etc are also available. The inference microscope is used with perfectly transparent objects that are invisible under an ordinary microscope.

In day-to-day use, microscopes are classified on the basis of the number of their lenses, i.e., monocular, binocular and trilocular.

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History of Microscopes

By Peter Emerson

Hans Janssen and Zacharias Janssen are held to be the inventors of the microscope, according to the recorded letters of the Dutch envoy, William Boreel. The invention was around the year 1595. Galileo Galilei developed a compound microscope using a convex and a concave lens in the year 1609. The formulation of Christian Huygens in the 17th century, the simple 2-lens ocular system with achromatic correction is popular even today. Anton van Leeuwenhoek popularized the functionality of the instrument among the biologists and the credibility, the "Father of Microscopy" is generally awarded to him. Leeuwenhoek made his famous single lens microscope in the year 1673.

During the beginning years of invention, the microscope was a toy in the rich houses. The first significant discovery using microscopes was about the circulating blood system of the human body. It then led to many valuable discoveries for mankind. The steps such as the correction of spherical aberration, use of achromatic lenses etc were appreciated during the 1820's. August Kohler introduced the microscope lamp with filters in 1880. He also finalized the condenser position to provide the best image projection. The theory of the microscope was published by Ernst Abbe in 1873. In the same year, Ernst Leitz introduced the microscope with a revolving mount for 5 objectives. The oil immersion lens was used from the year 1878, and the apochromatic objective was introduced into microscopy by Ernst Abbe in1886.

The first commercial UV microscope was presented by Zeiss in 1904. In 1930, Fritz Zernike invented the phase contrast microscope, which helps to study transparent living things. The revolutionary TEM electron microscope of Ernst Ruska and Max Knoll was introduced in 1931 and the scanning electron microscope was evolved later in 1937. Yet another milestone in the history of microscopes is the scanning tunneling microscope invented in 1981 by Gerd Binnig and Heinrich Rohrer, which help to visualize the atomic level 3D structure of objects. The scanning laser confocal microscope was commercially available from 1983.

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An Introduction to Science

By Vinny Papay

Science is one of the main topics that we study as children and young adults when in school. It is a subject that is all around us everyday, just like Mathematics and English, making these three topics key subjects at school. Just like most school subjects and topics, there are many sub topics and categories that we have to learn about while studying it. This article will briefly outline all the science topics so that you can be more informed about studying science if you are new to the subject. Most people like science but some do not understand it. I hope you find this article useful.

There are three main types of core scientific subjects. These are Biology, Chemistry and Physics. Of course, there are many more topics, however everything to do with science and the study of anything science related falls under these three categories. When choosing to take this subject as a further field of study, most individuals pick one of these three as a main study and it tends to be the one that they think is more interesting, so this may help you make a decision if you are thinking of becoming a scientist.

Biology

Biology is a natural science and it is the study of life focuses on the growth, structure and evolution of living organisms and looks at how they are formed. The basic focuses of biology are cell structures, the study of genes, new species and evolution, organisms and how they maintain life in certain environments/living conditions and how living things transform and consume energy. Biology is studies using the following methods and sub topics and it involves biochemistry, molecular biology, physiology, ecology, evolutionary biology and the study of the environment. Charles Darwin (1809 - 1882), born in England was a famous biologist who was famous for publishing his theory of evolution. His interest in nature made him give up his study of medicine and concentrate on nature instead.

Chemistry

Chemistry involves the study of matter. It examines the behaviours, properties, and interactions of atoms and groups of atoms. When studying chemistry is heavily involves experimenting with different substances and is used in most other scientific subjects like physics, biology and geology. This sub topic of science has been around since the beginning of history, when it was known as alchemy. Chemistry involves the study of elements, matter and experimentation. Dimitri Mendeleev (1834 - 1907) was a Russian chemist who developed the periodic table of elements, and used it to predict the properties of other elements still to be discovered.

Physics

Physics involves the study of natural science and natural philosophy. It studies the nature of matter and motion through time and space and also looks at astronomy and examines how the universe behaves and how it was created or made. The concepts of study includes and branches into chemistry, biophysics, quantum physics and mathematics. When studying physics things such as gravity, energy, motion, heat, waves and maths are looked at, as well as electricity and magnetism. Well known physicists include Sir Isaac Newton (1642 - 1727) who was famous for his theories about gravity and motion, Steven Hawking born in 1942 (and still alive today) who studies black holes and his theory relativity and quantum mechanics. Albert Eisntens' (1879 - 1955) theory of general relativity changed the way we think about and our understanding of the universe and gravity.

Science is a very wide topic with lots to talk about. I hope that you found this article useful and interesting to read and it was informative. There are many other famous scientists that are not listed here above as I have only mentioned a few, but these individuals have definitely contributed to our understanding of the world.

If you have questions about science, need help with your science homework or generally like to know more about this subject, you can ask science questions at ScienceQA. You can also answer science questions that have been asked. Become part of the science community and earn points/badges.

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Student Microscope

By Vandana Banerjee

The student life is perhaps the best time to introduce young minds to the best of the knowledge so as to leave an impression that would last a life time. It is at this age that most of the seeds of inquisition and zeal for knowledge and discovery are laid. Therefore it is of utmost importance that they get introduced to the best instruments of science that helps this process. The student microscope is one such instrument that helps in laying the above mentioned foundation amongst the kids of the middle school onwards. The modern world has provided the students with many designs and models of the biologist's best friend.

Generally student microscope has a few characteristics that are unique to it and most manufacturers keep it in mind while making their brand. They are usually light weighted and relatively inexpensive. In addition to this the designs are user friendly, i.e. they are easy to handle and use and a system and mechanics that is designed to survive vigorous usage and rough handling. Some of the most common of these microscopes have safety features to prevent tampering like eye piece and stage clips that are locked on, a focus movement that is both coarse and fine and a slip clutch to prevent over focusing and also a focus top that is adjustable so as to prevent any kind of damage to the objective lens and the glass micro-slides.

The optics used in the student microscope is generally a high quality DIN standard one. More often than not these microscopes have three or at least a couple of objectives with 40x and 10x lenses. So on an average the magnification power of these microscopes range between 100x to 400x. However with the addition of the third objective of 100x in some the power increases to 1000x. These are generally used by students studying in higher standards. The lighting feature used in a student microscope completely depends on the cost of the instruments. The inexpensive ones have tungsten bulbs whereas the slightly expensive instruments use the fluorescent lights and in some case the halogen lamps.

Although the prices of different kinds of microscopes differ a lot but in the case of a student microscope a higher price tag does not ensure the availability of everything that a kid wants. As a matter of fact while searching for an instrument in this segment if one has knowledge about the microscope they can find a good quality instrument with all the desired features at a very economical price. Certain features have to be looked into while purchasing a student microscope like the focus ability. It should have both the fine as well as coarse focus viewing so as to provide the kid with a clear view of every sample. Apart from this the magnification should be at least of a power of 400x and would be best if it is 1000x as this is the sole purpose of a microscope and it should serve it best.

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