[DungeonMaster]

I do know the spectrum order shortest to longest wavelength is ROY G BIV

Red is the longest wavelength.

[CincyRichieRich]

I do know the spectrum order shortest to longest wavelength is ROY G BIV

Red is the longest wavelength.
////
Thanks for the correction! Sorry.

[JME_FAN]

“Red is the longest wavelength.”

True, in the VISIBLE portion of the energy spectrum.

Infrared is longer, then microwaves, and radio frequencies are longer still.

On the opposite end, after violate light, comes ultraviolet, then x-rays, and beyond those into the gamma region.