Since my partner is doing such a bang-up job providing you with that wondrous thing popularly known as "content," I thought I'd break for a little holiday cheer:

"Phrosty the Photon" (sung to "Frosty the Snowman")

Phrosty the Photon was quite a quantum sight,
With a zero mass and an endless life, and a speed approaching
Light.

There must have been some magic in a physics lab one year,
For when they studied X-Ray beams, old Phrosty did appear,
Ooooooh...

Phrosty the Photon says he knows he's not that large,
But he said one day, if he comes this way, he will give us
All a charge.

Thumpity, thump, thump, thumpity, thump, thump,
Moving fast as light.
Thumpity, thump, thump, thumpity, thump, thump,
Phrosty's out of sight.

May all your Christmases be light.