The Proton Transmogrification
| Episode Number | 22 |
|---|---|
| Season | 7 |
| Aired | 2014-05-01 |
| Overview | Professor Proton helps Sheldon deal with grief; Leonard gets into a competition with Penny; Bernadette and Amy prepare a "Star Wars Day" gift for the guys. |
| Runtime | 25 minutes |
| Absolute Number | 157 |
| Finale Type |