Science 7 - Parts of the Microscope and other stuff

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Cards (21)

  • Body Tube - holds the objective lenses and the ocular lens at the proper distance.
  • Nose Piece - holds the objective lenses and can be turned to increase the magnification.
  • Objective Lenses - Lenses increase magnification (usually from 10x to 40x).
  • Stage Clips - These 2 clips hold the slide/specimen in place on the stage.
  • Diaphragm - The Diaphragm controls the amount of light on the slide/specimen.
  • Light Source - Projects light upwards through the diaphragm, the specimen and the lenses.
  • Ocular lenses - Magnifies the specimen image.
  • Arm - Used to support the microscope when carried. Holds the body tube, nose piece and objective lenses.
  • Stage - Supports the slide/specimen.
  • Course Adjustment Knob - Moves the stage up and down (quickly) for focusing your image.
  • Fine Adjustment Knob - This knob moves the stage SLIGHTLY to sharpen the image.
  • Base - Supports the microscope.
  • Scanner - usually marked 4x, combined with the eyepiece lens, will provide the lowest magnification power.
  • Low power objective- usually marked 10x, most helpful in analyzing glass slide samples.
  • High power objective- longer than the LPO and usually marked 40x or 60x, used to focus on a specific part of the specimen.
  • Oil Magnification – largest magnification ever.
  • Confocal Microscope - Uses laser light, Laser light scan across the specimen with the aid of scanning mirrors, the image is placed on a digital computer screen.
  • Dissection or stereoscope – Used to get a better look at larger specimen, you cannot see individual cells because it has low magnification.
  • Scanning Electron Microscope - Uses electron illumination, Image seen is 3-D, with high magnification & resolution, Specimen is coated with gold & the electrons bounce to give you exterior view of the specimen, Pictures are in black & white.
  • Compound/Light Microscope - uses compound lenses to magnify objects
  • Transmission Electron Microscope - Uses electron illumination, image seen is 2-D, Thin slices of specimen are obtained, With high resolution and high magnification.