
Their observed PHASE shift in
the diffusing electrons inside the ring...
The Big Bang Theory Season 3, Episode 10

Seems like, with Sheldon moving out,
you're in a new PHASE of your lives,
The Big Bang Theory Season 10, Episode 10

my short-lived parkour PHASE.
The Big Bang Theory Season 12, Episode 4

You guys completed PHASE one,
we'll take it from here.
The Big Bang Theory Season 10, Episode 23

because I never went through
a rebellious PHASE so, I got an earring...
The Big Bang Theory Season 10, Episode 12