When Many of the Atoms or Molecules in a Sample

question 103

Multiple Choice

When many of the atoms or molecules in a sample have been excited into a metastable state, a(n) ______________ has occurred.

• A) ultraviolet catastrophe
• B) population inversion
• C) coherent emission
• D) incoherent absorption

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Definitions:

Process

A series of actions or steps taken in order to achieve a particular end.

Therapeutic Life-style

A way of life or approach to living that actively promotes physical, mental, and emotional health.

Stephen Ilardi

A psychologist known for his contributions to the treatment of depression, including the development of the Therapeutic Lifestyle Change program.

Double-blind Technique

A research methodology where neither the participants nor the experimenters know who is receiving a particular treatment, minimizing biases.