Terminologies for Microscope

Question 1

The ratio of the apparent size of an object through the microscope and the actual size of an object

Answer 1

Magnification

Question 2

The adjustment of the distance between the objective lens and the specimen when a “clear image” of the specimen is seen through the eyepiece

Answer 2

Focusing

Question 3

The image of an object seen in the microscopic field

Answer 3

Virtual or floating image

Question 4

The bright circular illuminated area as seen through the ocular eyepiece

Answer 4

Microscopic field

Question 5

The distance between the front lens of the objective lens and the top of the cover glass when the specimen is in focus

Answer 5

working distance

Question 6

The angle or cone of light rays capable of entering the front lens of the objective from a point in the object.

Answer 6

Angular aperture

Question 7

Pertain to the thickness of the object that may be seen at one time under focus

Answer 7

Depth of focus

Question 8

A measurement of the ability of the condenser and the objective lens to gather light

Answer 8

Numerical Aperture

Question 9

Ability of the lens to clearly separate or distinguish two points of two lines individually in the image

Answer 9

Resolving power

Question 10

Refers to the objectives and the eyepiece where practically no change in focus has to be made when one objective is substituted for another

Answer 10

Parfocal

Question 11

The bending of light rays away from the objective lens when light passes from the glass of the microscope slide to the air.

Answer 11

Refraction