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Transcript of Microscope
Nosepiece Base Objectives
http://www.biologycorner.com/worksheets/microscope_use.html Stage Stage Clips Light Source History of the Microscope It is not known the first time humans used a lens. However, it has been known for over 2000 years that glass bends and changes light. In 2200 BC Claudius Ptolemy described a stick appearing to bend in a pool of water. This is the way the microscope's idea started along with the Roman's idea.
In the 13th century Salvino D'Armate from Italy, made the first eye glass.
The earliest simple forms of magnification were magnifying glasses made by the Greeks and Romans. Coarse adjustment knob Modern microscopes use batteries and light
sources from a light bulb. The light level can
be changed by using the switch on the side.
The scopes use machine-made objectives and
parts for the best precision. Fine adjustment
knob Diaphragm Difference Between the Light and Electron Microscope In a light microscope, a beam from a light source hits a lens that focuses the light on whatever object has been placed under the microscope. With an electron microscope, a filament (slender threadlike object) generates a stream of electrons which are moved through metal holes and magnetic lenses to hit the target. http://www.ehow.com/list_5948377_differences-electron-microscope-light-microscope.html#ixzz27PebVNqF Electron Light An electron microscope uses a beam of electrons to
light up an object and make a magnified image. There are three types of electron microscopes
-The first is the Scanning EM (SEM)
-Second is the Transmision EM (TEM)
-Third is the Reflection EM (REM) By Nick M And Payton VDH Magnification 40x 100x 400x Carrot leaf Parts of a Microscope http://www.google.com/imgres?q=microscope&um=1&hl=en&client=safari&sa=N&rls=en&biw=1200&bih=668&tbm=isch&tbnid=CzYo-7bn_8Vr7M:&imgrefurl=http://en.wikipedia.org/wiki/Microscope&docid=lcgPogsciKMY1M&imgurl=http://upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Optical_microscope_nikon_alphaphot_%25252B.jpg/220px-Optical_microscope_nikon_alphaphot_%25252B.jpg&w=220&h=333&ei=i1ZjULTSKsTv0gHU0oDoDg&zoom=1&iact=rc&dur=1&sig=116934340238060246183&page=1&tbnh=132&tbnw=87&start=0&ndsp=21&ved=1t:429,r:0,s:0,i:152&tx=59&ty=28 http://www.google.com/imgres?q=microscope&um=1&hl=en&client=safari&sa=N&rls=en&biw=1200&bih=668&tbm=isch&tbnid=o6PMxLmQ52kwnM:&imgrefurl=http://www.microscope-microscope.org/basic/microscope-parts.htm&docid=HDAVdNRMZou6gM&imgurl=http://www.microscope-microscope.org/images/BWScope.jpg&w=353&h=400&ei=i1ZjULTSKsTv0gHU0oDoDg&zoom=1&iact=rc&dur=132&sig=116934340238060246183&page=1&tbnh=132&tbnw=116&start=0&ndsp=21&ved=1t:429,r:1,s:0,i:155&tx=64&ty=10 http://www.google.com/imgres?q=microscope&um http://www.google.com/imgres?q=old+microscopes&um=1&hl=en&client=safari&rls=en&biw=1200&bih=668&tbm=isch&tbnid=XkPfdwQm0lJWQM:&imgrefurl=http://www.antique-microscopes.com/american/miller.html&docid=rGX04soKWfPKfM&imgurl=http://www.antique-microscopes.com/american/miller.jpg&w=221&h=373&ei=KVdjUOS9G-bL0AGQo4HoBw&zoom=1&iact=rc&dur=364&sig=116934340238060246183&page=1&tbnh=135&tbnw=82&start=0&ndsp=27&ved=1t:429,r:0,s:0,i:123&tx=35&ty=79 Sources http://dictionary.reference.com/