EM Spectrum

AM Radio Band

1.0 MHz

Cosmic Octave Color

Derived visible color (558 nm)

Display swatch #b6c92d

Octave-shifted: 15.6 kHz (-6 octaves)

EstablishedPhysical Measurement

Evidence Level

Established

Source Count

Last Reviewed

March 23, 2026

Directly measured, standardized, or well-supported in mainstream scientific or technical literature.

This entry documents a measurable or standardized frequency reference. The atlas is a research and practice guide, not a medical diagnostic instrument.

Review the evidence model

AM radio broadcasts (530 kHz – 1.7 MHz). Amplitude modulation, discovered in the early 20th century. Long range, especially at night.

Wavelength

343.0 μm

Claim Type

Physical Measurement

Cosmic Octave Color

Derived visible color (558 nm) · #b6c92d

Source

Radio engineering

Sources

Optics and Physics References

2 atlas references

Used for visible-light wavelengths, electromagnetic ranges, and general physics conversions.

Optics, physics, and electromagnetic-spectrum references.

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