I like adding a bit of the more “scholastic” stuff, here and there. A little chemistry never hurt anyone! …Er… No… There have been… deaths… but I’m sure you’ll be fine!

You can do somewhat neat stuff with this equation. For instance, the wavelength of blue light has a wavelength of 470 m x 10^-9.  You can divide the speed of light (3 x 10^8) by this and get

(3 x 10^8) / (470 m x 10^-9) = 6.4 x 10^14 Hz.  That’s an estimated frequency of the sky, then. What with it being blue and all…

I didn’t want to get too crazy in the comic, so I’ll give you the symbols here. Frequency is nu, written v. The speed of light is c. Wavelength is lambda (it looks like an upside-down Y).

One thing I found helpful to actually retain this is that nu is pronounced like “new”. So, when someone says “what’s new?” you can say “c over lambda!”. Nerds might laugh. I’d laugh.  Unfortunately, I can’t take credit for that gem.