SWhat changed
Hertz uses a spark oscillator, resonant detector and conducting reflector to reveal spatial interference patterns supporting electromagnetic-wave propagation and reflection in air.
Scientific scope
Hertz uses a spark oscillator, resonant detector and conducting reflector to reveal spatial interference patterns supporting electromagnetic-wave propagation and reflection in air. The target is the 1888 air-wave and reflection paper, not all Hertz experiments or radiotelegraphy. A spark oscillator, resonant loop and finite conducting wall reveal orientation-dependent interference patterns. Observations near the normal depend on room geometry, resonance, damping and observer position. Quarter-wavelength orientation reversals are not all half-wavelength nodes. The original 4.8 m half-wavelength and air/wire speed discrepancy are not retained as precision constants: Hertz later doubted the measurement, room-resonance interpretation and node extrapolation, and accepted Sarasin and de la Rive's improved experiments. Notes 18 and 21 separate theory-derived magnetic force from independently detected effects and leave the old wire-velocity interpretation unresolved. This chapter supports wave propagation and reflection, without validating all field theory or establishing long-distance radio. This account uses the linked translated source, without an independent first-print comparison, apparatus reproduction or figure certification.
Evidence
Source-linked, scoped account of the original work. The published scope states the scientific assumptions and remaining verification limits. WRS has not independently certified the full proof, experimental result or system benchmark.
Contributors
- Heinrich Hertz · SCIENCE: Original source-listed scientific author of this scoped work; byline does not determine effort fractions.
- Heinrich Hertz, On Electromagnetic Waves in Air and Their Reflection (1888), author-supervised 1893 translation in 1962 reprint
- H. Hertz, Ueber electrodynamische Wellen im Luftraume und deren Reflexion, Annalen 1888 target bibliography
- Heinrich Hertz, Untersuchungen über die Ausbreitung der elektrischen Kraft (1892), German original-collection transcription index
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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