Related Clues:
- Image used for scene segues on 'The Big Bang Theory'
- A male cat, tiny thing
- Captain ___ (DC Comics superhero)
- A cat that's very small
- Particle depicted on an Emmy
- Place for a proton
- Nothing in cash machine? Not big matter
- Tiny "smashing" target
- Physics building block
- Focus of study for Niels Bohr
- Focus of quantum mechanics
- Thing smaller than a molecule
- Splitting target
- It may be split or smashed
- ___ Ant (cartoon superhero)