microscope Flashcards
a tool used to magnify images
simple hand lenses
a more useful tool for greater magnification
microscope
the science of investigating small objects and structures using the microscope
microscopy
a type of microscope commonly used in classroom work
compound microscope
it can magnify up to 1000 times or 2000 times
compound microscope
it can magnify more than 600 000 yimes
electron microscope
2 parts of a micrscope
optical parts
mechanical parts
these consists prinicipally of special types of glasses aligned on an optical axis for enlargement of the image of the object under study
optical parts
5 parts of optical parts
ocular or eyepiece
objectives
diaphragm
condenser
mirror
a lens found inserted in the draw tube that is use for further magnification of the image ans this is hwere you look at the specimen
ocular or eyepiece
it can magnify up to 10 times
ocular of eyepiece
these are lenses screwed to the rotating noespiece that serves to form the image of the object within the body tube at a certain magnification
objectives
4 kinds of objectives
scanner
low power objective
high power objective
oil immersion objective
can magnify the object 4 times
scanner
can magnify the object 10 times
low power objective
can magnify the object 40 times
high power objective
can magnify oobject up to 100 times
oil immersion objective
magnifies object up to 100 times and uses oil
oil immersion objective
it is adjustable and is located below the stage that regulates the amount of light passing through the central opening of the stage or aperature of the microscope
diaphragm
2 forms of diaphragm
iris diaphragm
disc diaphragm
it has a lever on the side that moved to open or close the iris forming a circular opening allowing more or less light reaching the object
iris diaphragm
a rotating disc fixed under the stage which have five or six holes of different sizes, when ortated varying amounts of light will pass through the stage opening
disc diaphragm
this is found beneath teh stage with aknob on the side that move and down to focus the intensity of the light from an illuminator onto the specimen
condenser
for non-electric microscope mirror are present that contains concave and flat surfaces to gather and dirct the light to illuminate the object
disc diaphragm
this part consists of certain precise parts chiefly of metal to support and adjust teh optical parts
mechanical parts
short curved handle use for holding and carrying the microscope
arm
upper portion of the body tube where the eyepiece is inserted
draw tube
attached to the arm that bears the lenses of the objectives
body tube
a structure at the lower end of the body tube that bears the lenses that can rotate to switch between objective lenses
rotating nosepiece
a structure above the nosepiece that protects the lenses
dust shield
a knob geared to the body tube or to th epillar is use to bring the object into focus
Course adjustment knob
is use for focusing finer details of specimen being viewed
fine adjustment knob
a platform where the specimen is usually mounted onto a glass slide is placed for observation
stage
these are two metal clips that will hold the slide in place
stage clip
a central opening in the stage where teh light rays pass through
stage aperture
a short supporting piece arising from the base
pillar
a heavy Y-shaped foot on which the microscope stand for support
base
a juction near the base that allows the microscope to be inclined at a certain angle
inclination joint
it is useful for a non-electric micrscope
iinclination joint
this is to know the number of times that the image of the drawing is enlarged in length as compared with the actual size of specimen observed
magnification of drawing
magnification of drawing formula
size of drawing in mm / actual size of specimen observed in mm
total magnification formula
Mt = Me * Mo
Me means —-
magnification of eyepiece
Mo means—-
magnification of objecives in use
it is the circular lighted field where you see the image of the object or specimen, it is determined henusing the different objectives
field of vision
formula of field of vision
A = pir^2
