Bell Work Write down the following terms on a blank sheet of paper. Microscope Resolution Magnification Optics Lens Write down what you think the definition of each of those words is.

Parts and their Functions Microscopes Parts and their Functions

Microscope Instrument using lenses to help us see small objects more clearly

Resolution How clearly an object can be seen The higher the resolution the sharper the image will appear

Magnification Enlarging the image of an object

Total Magnification The number of times the image you are seeing has been enlarged from the original object Total Magnification = Eyepiece X Objective

Optics The lens must be rounded outward (convex) The lens must be a solid The lens magnifies because the light rays enter a small surface, but leave through a larger surface (refraction) The farther the light rays travel the greater the magnification will be

Original Object Enlarged Object Lens Light Rays

Eyepiece Contains a lens with a magnification of 10x The piece you look through

Low Power Objective Lens located on the nosepiece. Magnifies the object 10 times

Stage Large flat piece that the slide rests on

Coarse adjustment Larger knob on the side of the arm Focuses the scanning objective lens by moving the stage up and down

Fine Adjustment Smaller knob on the side of the arm Focuses the low and high power objectives by moving the stage a tiny bit up and down

Light Shines upward through the diaphragm and slide Located on the base of the microscope

Diaphragm Wheel located under the stage Regulates the amount of light that passes through the stage to the slide

High power objective Strongest objective lens located on the nosepiece Magnifies the object 40 times

Scanning Objective lens The lowest power objective lens located on the nosepiece Magnifies the object 4 times

Original Object Enlarged Object Lens Light Rays