Commercially Available Barrier Envelopes

question 7

Multiple Choice

Commercially available barrier envelopes

• A)minimize contamination before exposure of the film.
• B)minimize contamination after exposure of the film.
• C)are made of a material that blocks the passage of photons.
• D)are made of a material that blocks the passage of electrons.

---

Definitions:

Humanists

Individuals who emphasize human values and concerns, typically focusing on human potential and achievements.

Segregation

The action or state of setting someone or something apart from other people or things or being set apart.

African American Psychologists

Psychologists who are of African American heritage or specifically focus on studying the psychological experiences of African American individuals and communities.

Kenneth and Mamie Clark

Psychologists known for their 1940s experiments using dolls to study children's attitudes about race, influencing the Brown v. Board of Education Supreme Court case.