Pulse duration for Pulse Emitters is typically measured in which units?

• A. Measured in seconds
• B. Measured in milliseconds, microseconds, or nanoseconds
• C. Measured in minutes
• D. Measured in hours

Answer: (B)

Pulse duration is about how long a single burst lasts. For Pulse Emitters used in non- ionizing radiation contexts, those bursts are extremely brief, so we measure them in time scales that capture tiny slices of a second: milliseconds, microseconds, or nanoseconds. Using seconds or minutes would be far too coarse and wouldn’t reflect the actual length of the pulse, while hours would only make sense for continuous exposure, not for a brief burst. So the best way to express how long one pulse lasts is with these very short time units that match the fast time scale of the pulse.