What does photon energy tell us about cellphone safety?

TL;DR

This paper clarifies that cellphone safety assessments should consider classical wave energy rather than single photon energy, providing thresholds that align with experimental data and challenging the focus on photon energy alone.

Contribution

It demonstrates that cellphone operation is in the classical wave regime, not the single photon regime, and offers energy density thresholds relevant to safety considerations.

Findings

Cellphone signals operate in the classical wave limit.

Energy density thresholds align with experimental observations.

Single photon energy is insufficient to explain safety concerns.

Abstract

It has been argued that cellphones are safe because a single microwave photon does not have enough energy to break a chemical bond. We show that cellphone technology operates in the classical wave limit, not the single photon limit. Based on energy densities relative to thermal energy, we estimate thresholds at which effects might be expected. These seem to correspond somewhat with many experimental observations. Revised with appendix responding to critique published by B. Leikind.