spectral radiant energy density in terms of wavelength
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  value: spectral radiant energy density in terms of wavenumber
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  value: joule per cubic metre nanometre
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  value: kilogram per square metre square second
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  source: ISO 80000-7:2019 Quantities and units — Part 7: Light and radiation
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  served at: 2026-08-10T10:37:36.972818Z
  entity updated at: 2026-05-07T12:56:24.458635+00:00Z
  entity created at: 2026-05-07T12:56:24.458635+00:00Z