Questions from Crime and Investigation

Q: What is the basic difference between a scanning electron microscope and the

What is the basic difference between a scanning electron microscope and the other microscopes used in the crime laboratory?

Q: How can a scanning electron microscope be used to identify the elements

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

Q: Indicate the phase of growth of each of the following hairs:

Indicate the phase of growth of each of the following hairs: a. The root is club shaped b. The hair has a follicular tag c. The root bulb is flame shaped d. The root is elongated

Q: How can a scanning electron microscope be used to determine whether a

How can a scanning electron microscope be used to determine whether a suspect has recently fired a gun?

Q: Why does a compound microscope produce greater magnification than a magnifying glass

Why does a compound microscope produce greater magnification than a magnifying glass? How does the eyepiece lens contribute to magnification?

Q: What is vertical illumination and under what conditions would a forensic scientist

What is vertical illumination and under what conditions would a forensic scientist use it to examine a sample? Why is it superior to transmitted illumination under such conditions?

Q: How does one calculate the magnification power of a compound microscope?

How does one calculate the magnification power of a compound microscope?

Q: What is the difference between a real image and a virtual image

What is the difference between a real image and a virtual image?

Q: What does numerical aperture (N.A.) measure? What

What does numerical aperture (N.A.) measure? What is the difference between a lens with N.A. 1.0 and one with N.A. 0.5?

Q: Why might an examiner choose a microscope with a lesser magnification to

Why might an examiner choose a microscope with a lesser magnification to study a specimen?