Cleverness results:
- Keltham's spectroscopy stations sort of suck; not really in a way where they work, per se, but maybe in a way where they literally work at all and you can try to guess where the spectral lines might maybe possibly be
- They can't get their shaped quartz clear to where it's better than the sucky spectroscopy station's illusionary prism, but they're getting it clearer
- Carissa learned how to make illusions of Keltham's illusionary spectroscopy stations, and hers are at least no worse
- Diffraction gratings are really neat, nobody's ever seen that rainbow-holographic sheen before on something that isn't an oil slick or in some cases an absurdly expensive magic item, buuut they can't Prestidigitate a surface with that 'color' well enough for it to work inside a spectroscopy station