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#water

Every note tagged #water, newest first — or browse the full archive.

July 20, 2026 Physics understanding traceable

Why a microwave oven is not tuned to water

A microwave oven heats liquid water through dielectric relaxation, not a narrow resonance. A traceable single-Debye calculation separates the dielectric-loss-factor peak from attenuation, quantifies a pure-water baseline, and shows why the same idealized channel is weak in ice.

#chemical physics#dielectrics#water#electromagnetism#relaxation
June 30, 2026 Chemistry

Reading water off the page: geometry, orbitals, acidity, and spectra

Water is the most familiar molecule and one of the strangest. This post builds it up from the bottom — where the atoms sit, what the electrons do, why it is both an acid and a base, and how it talks to light.

#water#physical chemistry#molecular orbitals#symmetry#acid-base#spectroscopy
pj Peter V. Johnston

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