"Exchanges," she breathes into one ear, then the other, "of energy."
"Friction…" she strokes down Brittany's arm. "Friction, and, uh… ummm… viscosity."
It's quiet in the stacks. Late on a Friday, it's quieter than usual. Brittany swings to face her. The corners of her eyes, like the corners of her mouth tip upward.
"I've been reading up," murmurs Santana.
"About…?"
"About transfers of heat …between bodies."
Santana settles herself on Brittany's lap, one leg on either side. She begins unbuttoning Brittany's shirt.
"About pressure, volume, work. And… " she continues her own work.
Brittany swallows. Breathes. Forgoes screaming.
"Radiation!" she gasps.