EM Spectrum
Very Low Frequency (VLF) Radio
10.0 kHz
Cosmic Octave Color
Derived visible color (436 nm)
Display swatch #466fff
EstablishedPhysical Measurement
Evidence Level
Established
Source Count
1
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 modelVLF radio waves (3–30 kHz) used for submarine communication and navigation. Can penetrate seawater.
Wavelength
3.4 cm
Nearest Note
D#9 (+8¢)
Claim Type
Physical Measurement
Cosmic Octave Color
Derived visible color (436 nm) · #466fff
Source
Electromagnetic spectrum
Sources
Optics and Physics References
1 atlas references
Used for visible-light wavelengths, electromagnetic ranges, and general physics conversions.
Optics, physics, and electromagnetic-spectrum references.
Octave Ladder
Every audible octave of this frequency — the same tone, higher and lower.
Nearby in the Atlas
Entries within ±35 cents of this tone when reduced to the same octave — candidates for pairing or comparison.
D#0Musical Frequencies
19.45 Hz-7.2¢
D#4Musical Frequencies
311.13 Hz-7.6¢
D#5Musical Frequencies
622.25 Hz-7.6¢
D#6Musical Frequencies
1.2 kHz-7.6¢
D#7Musical Frequencies
2.5 kHz-7.6¢
D#8Musical Frequencies
5.0 kHz-7.6¢
radioem-spectrumvlf