Microscope and Microscopy

​At the end of this lesson, I can:

• ​differentiate the types of microscopes,

• identify the different parts of a microscope; and

• manipulate a microscope correctly​

Multiple Choice

Zaccharias Janssen and Hans Janssen created a magnifying device that served as the forerunner of the compound microscope and the telescope.

• True

• False

Multiple Choice

Who coined the term "cell"?

• Anton Van Leeuwenhoek

• Joseph Lister

• Robert Hooke

• Janssen and Janssen

Multiple Choice

What results in misalignments and other distortions between different channels in a microscope image which reduces spherical aberration?

• field curvature

• chromatic effect

• distortion

• coma

Multiple Choice

What is a condition that must be fulfilled by a lens or other optical system in order for it to produce sharp images of off-axis as well as on-axis objects?

• Light intensity condition

• Snell's law and total internal reflection

• Abbe sine condition

• Angle of incidence

Multiple Choice

What kind of microscope, developed by Zsigmondy, can study objects below the wavelength of light?

• compound microscope

• electron microcope

• ultramicroscope

• scanning microscope

Multiple Choice

Who developed the phase-contrast microscope?

• Ruska

• Zernike

• Binnig

• Rohrer

Multiple Choice

What type of microscope is commonly used and can show images in two dimensions?

• compound

• electron

• scanning

• phase-contrast

Multiple Choice

What microscope uses electron illumination and can show images in three dimensions?

• electron scanning

• compound

• ultramicroscope

• transmission

Multiple Choice

If the ocular lens' magnification if 10x, and you observing a specimen using LPO, what is the total magnification?

• 10x

• 100x

• 1000x

• 10000x

Multiple Choice

What part of the microscope controls the amount of light going through the specimen?

• diaphragm

• ocular lens

• objectives

• mirror

Multiple Choice

What is used to fine focus the image when viewing at the higher magnifications?

• coarse adjustment knob

• fine adjustment knob

• stage

• objectives

Multiple Choice

When carrying a microscope, you must must use both hands -- one holding the arm, the other supporting the base.

• true

• false

Multiple Choice

Optical surfaces must be cleaned in a zig-zag pattern.

• True

• False

Multiple Choice

When changing objectives, use the revolving nosepiece.

• True

• False