Type of Microscopy State of the Cell (live‚ dead‚ both) Limit of General steps for resolution sample preparation/ fixation Advantage of Technique Phase contrast light microscope Amplitude contrast microscope Optical tweezers Fluorescence/ Confocal Microscopy Transmission Electron Microscope (TEM) Scanning Electron Microscope (SEM) Scientist Robert Hooke Antonie van Leeuwenhoek Ernst Karl Abbe Fritz Zernike Shimomura‚ Chalfie‚ and Tsien Ernst Ruska Schleiden and Schwann Buckminster Fuller Contribution
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My Life under the Microscope SOCS 185 The older I grow the more everything in my past seems to make sense in relation to the person I am today. The trials and tribulations my family and I experienced have shaped and become the definition of this thing called “life”. I’m pretty clear about whom I am as a person‚ but now that I know different sociological concepts and perspectives‚ I’m interested on how society views me as a person. I will attempt to explore the sociological concepts I’ve learned
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that form stromatolites There have been many technological advances that have lead to a greater understanding to the world that we live in‚ especially over the past 50-75 years. Developments in technology such as the light microscope and the transmission electron microscope particularly have made research in the field of bacteria and in this case Cyanobacteria much easier‚ removing barriers and creating a situation where there are barley any limits. Cyanobacteria are among the easiest microfossils
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Clark Hall‚ 255-4065 Ernst Ruska and Max Knoll built the first electron microscope in 1931 (Nobel Prize to Ruska in 1986) T4 Bacteriophage Electron Microscopy bridges the 1 nm – 1 μm gap David Muller 2008 between x-ray diffraction and optical microscopy Tools of the Trade AFM MFM Scanned Probe Microscope (includes Atomic Force Microscope) Transmission Electron Microscope Scanning Electron Microscope David Muller 2008 Biological and Electronic Component Dimensions Biological
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boxes] 1 125 125 Surface-to-volume (S-to-V) ratio [surface area volume] 6 1.2 6 Microscopy Scientists use microscopes to visualize cells – too small to see with the naked eye Two types of microscope: Light Microscope (LM) Electron Microscope Scanning Electron Microscope (SEM) Transmission Electron Microscope (TEM) Microscopy In light microscope‚ visible light is passed through a specimen and then through glass lenses Lenses refract (bend) the light so that the image
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than can be seen when using the light microscope. In comparison to light microscopes electron microscopes provide a clearer picture‚ greater magnification and greater resolution. There are two types of electron microscope; the scanning electron microscope and the transmission electron microscope. Electron microscopes use electromagnetic and electrostatic lenses and some are able to magnify the specimen size by millions. The transmission electron microscope magnifies over 50‚000‚000X the resolution
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Famous Canadian Entrepreneurs James Hillier and Albert Prebus (Electron Microscope) James Hillier‚ one of the entrepreneurs of the electron microscope‚ was born on August 22nd‚ 1915 in Brantford‚ Ontario. He attended the University of Toronto‚ where he received a PhD in 1941. After graduating‚ Hillier spent most of his career at the Radio Corporation of America (or RCA)‚ discovering the principle of stigmator‚ which is used to correct astigmatism in a microanalyser‚ while being the first person
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A) to the fluorescent microscope. Count the number of elementary bodies you see through the microscope (recall that elementary bodies stain green)‚ enter the number of elementary bodies in the field below‚ and then click Submit Data to display your results in the grid. After you click Submit Data‚ the slide will automatically be placed in the biohazardous waste disposal. You answered: 0 elementary bodies 16. Drag the next slide (patient B) to the fluorescent microscope. Count the number of
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experiment is the heart rate of the daphnia. Equipment: * Pipette | * Cotton wool | * Concaved microscope slide | * Water (20cm²) | * Microscope slide cover | * Caffeine Solution (20cm²) | * Microscope | * 1 daphnia | * Thermometer | * Stopwatch/timer | * Petri dish * Two experimenters | * Pen * Paper | 1. A concaved microscope slide is placed in a lidless Petri dish. 2. A tiny strand of cotton wool
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Microscope * Head/Body houses the optical parts in the upper part of the microscope * Base of the microscope supports the microscope and houses the illuminator * Arm connects to the base and supports the microscope head. It is also used to carry the microscope. * Eyepiece or Ocular is what you look through at the top of the microscope. Typically‚ standard eyepieces have a magnifying power of 10x. Optional eyepieces of varying powers are available‚ typically from 5x-30x. * Eyepiece
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