6.9.4 Why Does Distance Matter So Much In RF Safety?

Discusses inverse-square behavior (where applicable), near-field versus far-field considerations, and why moving only a short distance can greatly reduce exposure.

6.9.5 Are We Constantly Exposed To Natural RF Radiation?

Explores the Sun, lightning, the Earth's thermal radiation, and the cosmic microwave background, placing human-made RF sources into perspective.

6.9.6 Why Doesn’T Every Wireless Device Transmit At Full Power All The Time?

Introduces adaptive power control, burst transmission, traffic loading, and duty cycle in accessible language.

6.9.7 Why Are Radar Transmitters Described By Peak Power Instead Of Average Power?

Explains pulse operation, pulse repetition frequency, duty cycle, and why very high peak powers do not necessarily imply equally high average exposure.

6.9.8 Why Are There Different Exposure Limits For Workers And The General Public?

Provides a non-technical explanation of occupational versus public exposure assumptions without pre-empting the detailed discussion in Chapters 7 and 9.

6.9.9 Why Can’T Internal RF Dosimetric Quantities Usually Be Measured Directly?

Explains why internal quantities are generally inaccessible in a living person and how external measurements, phantoms, and validated computational models are used instead.

6.9.10 Why Is The Progression From Emissions To Exposure To RF Dosimetry Important?

Connects source emissions, external exposure, RF dosimetry, and biological response, showing how the four stages and their corresponding assessment activities support the remainder of the book.