Microscope

• Microscopy is the science of investigating very fine organisms and small objects using microscopes.
• A compound microscope uses light to form an image and has glass lenses to magnify and resolve.
• Magnification is the process of enlarging the appearance of an object.
• Resolution refers to the clarity of the produced image when viewed under a microscope.
• What is the standard magnifying power of the eyepiece in a microscope?

  10x.
• The objective lenses are the primary optical lenses that magnify the specimen.
• What is the high power objective (HPO) magnification?

  40x.
• What is the role of the illuminating system in a microscope?

  • Provides light to the specimen.
  • Can use natural or artificial light.
• The diaphragm controls the amount of light reaching the specimen.
• The condenser collects and focuses light from the mirror to the specimen.
• The aperture is the hole in the stage where light passes through to reach the specimen.
• The stage is the platform where the specimen to be viewed is placed.
• The stage clips keep the slide in place on the stage.
• The arm serves as a handle to carry the mmicroscope.
• The base supports the whole microscope.
• The inclination joint allows the microscope to tilt for better viewing angles.
• The revolving nosepiece holds the objective lenses and allows for selection of different objectives.
• What are the types of light sources used in microscopes?

  • Natural light
  • Artificial light
• There are two types of lenses used to focus light - convex lenses that converge parallel rays of light and concave lenses that diverge them.
• Convex lens is thicker at its center than at its edges, while concave lens is thinner at its center than at its edges.
• A compound microscope consists of an eyepiece or ocular lens, which magnifies the image produced by the objective lens.
• An objective lens has several powers ranging from low power to high power.
• Low-power objective lenses have short focal lengths and produce large images with less detail.
• High-power objective lenses have long focal lengths and produce small images with more detail.
• What is the low power objective (LPO) magnification?


  5x
• The mirror is the light source of the microscope.
• Body tube or Draw tube holds the eyepiece and connect them to the objective lenses
• The Course Adjustment Knob mives the body tube up and down to view the image
• The fine adjustment knob used in bringing the specimen in sharp focus or making the view of the image clearer or better
• Eyepieces are also called oculars, they are located at the top end of the microscope's main barrel. They serve as an extension of your eye so that it can see the object being viewed through the lens system.
• What are the major parts of a microscope? 


  Magnifying

  Illuminating

  Mechanical parts