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A Microscopes Impact on Society
Transcript of A Microscopes Impact on Society
Medical Research Scientists- Ex. a cell biologist may use a fluorescent tag to examine the location of a given protein in a cell.
Field Biologists- Ex. a field biologist may record the number of different species found in samples of pond water taken over a period of time
School teachers- Ex. an experient within the classroom. Microscopes have two converging lenses and produces one image that is real and one image that is virtual. The real image is not seen because it in inside the microscope and the virtual image is the image that you see when looking into a microscope. When light rays are entering the microscope the light rays are being bent as they travel through the glass. The idea in a microscope is to bend diverging light into a parallel path and then eventually bend the parallel path light into a small focus at the eye. The many types of microscopes are different because of how much power each of them have. The power that a microscope has depends on how much each lens bends the light. How they work? + it has been extremely important in the development of the biological sciences and of medicine
+ easy to use
+ inexpensive related to electron microscopes
+ can look at live samples
+has two systems of lenses for greater magnification (eyepiece lens and objective lens) - viruses, molecules and atoms cannot be viewed (viewed only with an electron microscope)
- can't magnify more than 2000 times
-image doesn't have a big contrast. Cons Pros in a Compound Microscope in a Compound Microscope Work Cited http://mynelsonscience.com/perspectives/grade10/organizer/schoolwax/content/science_10/yudu/sc10_se_extra/resources/index.php?schoolwax_sid=9fed41d64d9b81f99e09e382511bbc29&application_path=/perspectives/grade10/organizer/schoolwax/&resource_id=4
http://www.google.ca/imgres?imgurl=http://www.pfscience.com/wp-content/uploads/2010/11/atom.jpg&imgrefurl=http://www.pfscience.com/2010/11/structure-of-an-atom/&usg=__WSSUkUABBxU7A0FQJbMkfKlHpDc=&h=475&w=421&sz=46&hl=en&start=0&sig2=O2WCfamOdzmMicbMZx6l8g&zoom=1&tbnid=wU0LQQNOsLR49M:&tbnh=154&tbnw=136&ei=N7zsTeXQA8PFgAeRw83YCQ&prev=/search%3Fq%3Dan%2Batom%26um%3D1%26hl%3Den%26biw%3D1123%26bih%3D625%26tbm%3Disch&um=1&itbs=1&iact=rc&dur=234&page=1&ndsp=15&ved=1t:429,r:3,s:0&tx=80&ty=93 How the microscope impacts society Microscopes are very important in our society. Their functions allow citizens to do many things such as identify deadly viruses and illnesses and determine what a cancer cell looks like. As technology progressed, we can see cells, proteins, electrons, particles, and viruses with the help of microscopes. Microscopes are able to do such things because they have the ability to magnify objects that are unable to be seen with the naked eye. We would have never further developed knowledge on Cell Biology, Bacteria, The Atom, Microscopes are also used in scientific discovery. Advances in chemistry, farming and energy production are just a few examples of how microscopes have an affect on society from a scientific aspect. A perfect exmaple would be; Nanotechnology: which is the study of manipulating matter on an atomic or molecule scale, would not be possible if there were not microscopes. Conclusion In conclusion microscopes have a very big impact on society. Microscopes also play a big part in the research field, so without microscopes many important advances in research such as cancer research could not be achieved. With the help of microscopes we are able to live a healthier and better life and they are invaluable to us all. cells bacteria An Atom History of the microscope The first microscope to be developed was the optical microscope, although the original inventor is not easy to identify. An early microscope was made in 1590 in Middelburg, Netherlands. Two eyeglass makers are variously given credit: Hans Lippershey (who developed an early telescope) and Hans Janssen. Different parts of the microscope Eyepiece Lens: the lens at the top that you look through.
Tube: Connects the eyepiece to the objective lenses
Mirror: angled to direct light under object
Arm: Supports the tube and connects it to the base
Base: The bottom of the microscope, used for support
Stage: The flat platform where you place your slides. Stage clips hold the slides in place
Revolving Nosepiece: holds the objective lens, rotates, lenses can be changed.
Fine adjustment: moves the tube to get the object into sharp focus
Coarse Adjustement: moves the body tube up or down to get object to focus
Clip- hold the slide in position on the stage
Diaphragam-controls the amount of light that reaches the object being viewed
High Power Objective- 40x magnification
Low power objective-4x magnification