In Spectrum Degrees to refer to a measurement of a hue we say "Degrees Spectrum" with the º symbol before the Λ - (eg. 45ºΛ) in the same way that we say "Degrees Celsius" (eg. 25ºC) or how we say an angle is 90º. It keeps consistency that the degree mark (º) is after the number but before the scale of measurement
So to clarify:
The hue measurement system / scale is called "Spectrum Degrees",
but the actual measurement is in "Degrees Spectrum"
While the cool end of the spectrum has a well-established term "Violet", marking the boundary between black & blue, there was no equivalent term for the infrared-facing end, where red fades into Black. This omission creates an imbalance in how we refer to spectral limits, so the name Tempa was selected by the creator of Spectrum Degrees to name the Terminal hue at the warm end of the visible spectrum
Tempa evokes the visual characteristics of materials such as lava, magma, or molten metal as they cool, the red fading toward black. The letter T was also considered specifically to avoid conflict with other primary or secondary colour initials (e.g. R, G, B, Y, M, C). Lava - L might cause confusion with the peak Lime like hue at 180ºΛ & Magma with Magentas M etc.. Tempa also alludes to Temperature, appropriate for this end of the spectrum, which borders the infrared range. We even "see red" when our Temper gets out of control. Additionally, it draws subtle inspiration from terms like Tempering (in metallurgy) & Tempera (in pigment fixing), reinforcing the idea of constrained, internalised heat.
It wasn't just to conveniently fit the 360º model, but some people are able to see a bit below 400 & a bit above 700 even if only faintly. Thus after lots of research, I felt that Spectrum Degrees parameters most closely align with what we would refer to as the visible spectrum of human vision not the neatly rounded version of 400 - 700 that some people quote just for convenience.
Below 380 & you are well into UV light & above 740 you are well into IR light
Ideas to expand the concept & use of Spectrum degrees.
If you are able to provide any assistance in helping to achieve the following it would be greatly appreciated
Identify & correct any errors with the system & site
Produce education resource materials & make sure Wikipedia & other online reference resources are aware of the ºΛ System
Produce downloadable images that best map the wavelengths to the ºΛ colour maps within the limitations of screen based RGB systems. As well as Printable CMYK versions
Provide named hue references for the various segments of the ºΛ Map
Identify potential applications & work with various technical groups & manufacturers to implement ºΛ real world usage