Exam 8: The Microscope

Light confined to a single plane of vibration is said to be ________.

Which microscope is best suited to the study of birefringent minerals and fibers?

Transmitted illumination can be used only with specimens that are transparent.

The microscope examination of a bullet requires:

The SEM produces an image that is stereoscopic in appearance.

The ________ microscope presents a three-dimensional image of an object.

A ________ microscope is used to make side-by-side comparisons of specimens.

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)Size of the specimen area being observed B)Provides a simultaneous view of two specimens C)Space between the specimen and objective lens D)Illumination required to view a transparent object E)Illumination of a specimen from above F)The thickness of a specimen in focus G)Eyepiece multiplied by objective lens H)The image seen through a compound microscope I)The lower lens of a microscope positioned directly over the specimen J)Presents a distinctive three-dimensional image K)Used to examine birefringent materials L)Image formed by the actual convergence of light rays on a screen -Real image

When using a compound microscope, the areas above and below the depth of focus are best viewed by adjusting the:

Which microscope provides the highest resolution and greatest depth of focus?

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)Size of the specimen area being observed B)Provides a simultaneous view of two specimens C)Space between the specimen and objective lens D)Illumination required to view a transparent object E)Illumination of a specimen from above F)The thickness of a specimen in focus G)Eyepiece multiplied by objective lens H)The image seen through a compound microscope I)The lower lens of a microscope positioned directly over the specimen J)Presents a distinctive three-dimensional image K)Used to examine birefringent materials L)Image formed by the actual convergence of light rays on a screen -Magnification

Describe the best process to analyze and attempt to identify the chemical components of fiber and paint evidence.

If crystals of unknown origin are viewed under a polarizing microscope and appear dark, what can be concluded about the crystals?

As the magnification of the compound microscope is increased, the field of view:

Which microscope has the largest potential working distance?

The pattern of the pollen grain surface is called:

Match the word in Column 1 to its definition in Column 2. Each answer can only be used once. A)Size of the specimen area being observed B)Provides a simultaneous view of two specimens C)Space between the specimen and objective lens D)Illumination required to view a transparent object E)Illumination of a specimen from above F)The thickness of a specimen in focus G)Eyepiece multiplied by objective lens H)The image seen through a compound microscope I)The lower lens of a microscope positioned directly over the specimen J)Presents a distinctive three-dimensional image K)Used to examine birefringent materials L)Image formed by the actual convergence of light rays on a screen -Vertical illumination

Pollen and spores can be used to provide links between a crime scene and a person or object.

Palynology is the study of:

How can a scanning electron microscope be used to identify the elements present in a specimen?