The Spectrum of Consciousness, No Boundary (Collected Works, Vol 1)

Like radiation and light, consciousness, suggests Wilber, establishes a multiplicity of aspects as it 'steps down' into time and space. Thus, as a spectrum, it can be studied legitimately on one or more of its 'wavelengths.' Viewing consciousness in this way, we can see that seemingly disparate disciplines each speak to a different wavelength of awareness.