OWB is measured in which unit?

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Multiple Choice

OWB is measured in which unit?

OWB, the width of a beam as it propagates, is a small angular measure. Using milliradians makes sense here because it keeps the numbers compact and directly relateable to how far the beam spreads over distance. The key relation is that the linear spread equals distance times the angle (in radians). So, for example, 5 milliradians at 200 meters gives about 1 meter of spread (0.005 × 200 m = 1 m). If you used degrees or arcminutes, the numbers get harder to relate to physical distances, and radians would be less convenient for quick mental math. Arcminutes would also be more cumbersome for this purpose.

OWB, the width of a beam as it propagates, is a small angular measure. Using milliradians makes sense here because it keeps the numbers compact and directly relateable to how far the beam spreads over distance. The key relation is that the linear spread equals distance times the angle (in radians). So, for example, 5 milliradians at 200 meters gives about 1 meter of spread (0.005 × 200 m = 1 m). If you used degrees or arcminutes, the numbers get harder to relate to physical distances, and radians would be less convenient for quick mental math. Arcminutes would also be more cumbersome for this purpose.

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