Chapter 7 Flashcards
An image that cannot be seen directly, it can be seen only by a viewer looking through a lens
Virtual image
An image formed by the actual convergence of light rays on a screen
Real image
The lower lens of a microscope, which is positioned directly over the specimen
Objective lens
The lens of a microscope into which the viewer looks; same as the occular lens
Eyepiece lens
Light that passes up from the condenser and through the specimen
Transmitter illumination
Illumination of a specimen from above; in microscopy it is used to examine opaque specimens
Vertical or reflected illumination
The lens system under the microscope stage that focuses light onto the specimen
Condenser
Describes a microscope such that when an image is focused with one objective in position, the other objective can be rotated into place and the field will remain in focus
Parfocal
Describes a microscope with one eyepiece
Monocular
Describes a microscope with two eyepieces
Binocular
The area of the specimen that can be seen after it is magnified
Field of view
The thickness of a specimen that is entirely in focus under a microscope
Depth of focus
Light confined to a single plane of vibration
Plane-polarized light
A device that permits the passage of light waves vibrating in only one plane
Polarizer
An instrument that links a microscope to a spectrophotometer
Microspectrophotometer
