A Small Gas Laser of the Type Used in Classrooms

question 64

Short Answer

A small gas laser of the type used in classrooms may radiate light at a power level of 2.0 mW. If the wavelength of the emitted light is 642. nm, how many photons are emitted per second?

---

Definitions:

Physiological Arousal

The body's response to stimuli, which may include increased heart rate, respiration, and energy activation, preparing the body for action.

Facial Expressiveness

The degree to which someone visibly shows emotions through facial movements, an important aspect of non-verbal communication.

Parasympathetic Nervous System

A component of the autonomic nervous system that promotes relaxation, healing, and energy conservation in the body.

Storing Energy

Generally refers to the accumulation and preservation of energy by biological organisms or systems for future use.