MICROSCOPE Flashcards
V or U shaped structure that supports the whole microscope
base
vertical extension of the base which connects to the arm
pillar
curved part of the microscope to which the base, body, and stage are attached
arm
a movable part which facilitates the tilting of microscope
inclination joint
a platform where the slide containing the specimen is placed
stage
a pair of metal that secures the slide in place
stage clip
a hollow cylinder on the upper part of the arm that houses the lens and serves as a passage way of light from the objectives to eyepiece
body tube
smaller cylinder attached to the body tube that holds the ocular
draw tube
a fixed plate attached to the body tube, is found above the revolving nosepiece and protects the objectives from dust and dirt
dust shield
a rotating head attached to the body tube, holds the objectives and facilitates the shifting of objectives
revolving nosepiece
either turned clockwise or counter-clockwise to adjust the objective when focusing and lowers or raises the body tube
adjustment knob
is the upper and larger type of adjustment knob for faster movement of the body tube when focusing the low power objective
coarse adjustment knob
is the lower and smaller type of adjustment knob for the final focusing of the high power objective and viewing at a different level
fine adjustment knob
is the transmission of light through a translucent object for viewing
illumination
is controlled by an on/off switch and a lamp rheostat
electric lamp
usually 2 faced, one surface in plane for bright source of light, the other is concave for low intensity of light and is used for reflecting light through the objective, lens and into the eyes
mirror
is found below the stage with the function of concentrating the light and uniform illumination of the specimen under observation
condenser
is found above the condenser with the function of controlling the amount of light that reaches the specimen
iris diaphragm
is the part found in between the stage and iris diaphragm
aperture
is a detachable tube on top of the draw tube, may have a pointer used to point a part of the specimen and has a magnification of 10x
eyepiece/ocular
is the shortest objective and has the widest opening, used for locating the sample, observing a wider field of object, and has a magnification of 4x
scanner
have smaller lens than the scanner, used for having a general image and locating various part of the specimen, has a magnification of 10x
low power objective (LPO)
the longer objective with smaller lens than the LPO, used for having a detailed image of the specimen, and has a magnification of 40x
high power objective (HPO)
the longest objective with the smallest opening used for viewing specific parts of the specimen, has a magnification varying from 90-100x
oil immersion objective (OIO)
is the oil used under the OIO due to it having the greatest refractive index
cedarwood oil
an alternative for cedarwood oil when using the OIO
synthetic oil
is the bending of light so it becomes focused on the objective
refraction
is the formula for computing the total magnification
magnification of the objective used x ocular
is the number of times the image of an object is enlarged or reduced
magnification
is the ratio of the size of the drawing and the actual size of the specimen
magnification of the drawing
the formula for the magnification of the drawing
D/S
D = dimension of drawing
S = actual size of the specimen
the ability of a lens to differentiate or distinguish two adjacent objects
resolving power
is the deviation of light rays through lenses that cause the blurring of images
aberration
is a property in which different colors of light are focused to different points
aberration
