
That's 4.9 Penny Blossoms PER hour.
The Big Bang Theory Season 2, Episode 18

of 4.6 yoctometers
PER femtosecond.
The Big Bang Theory Season 5, Episode 18

- -equals mass times
9.8 meters PER second PER second.
The Big Bang Theory Season 3, Episode 10

has to be four revolutions PER second.
The Big Bang Theory Season 10, Episode 20

As PER your suggestion,
we're hanging out.
The Big Bang Theory Season 4, Episode 5