![at which the Earth
rotates on its axis,
at which the Earth
rotates on its axis,](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
at which the Earth
rotates on its AXIS,
The Big Bang Theory Season 7, Episode 2
![The rate of spinning
for the central axis centrifuge
The rate of spinning
for the central axis centrifuge](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
The rate of spinning
for the central AXIS centrifuge
The Big Bang Theory Season 10, Episode 20
![...by an inclined plane
wrapped helically around an axis.
...by an inclined plane
wrapped helically around an axis.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...by an inclined plane
wrapped helically around an AXIS.
The Big Bang Theory Season 4, Episode 5
![...by an inclined plane
wrapped helically around an axis?
...by an inclined plane
wrapped helically around an axis?](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...by an inclined plane
wrapped helically around an AXIS?
The Big Bang Theory Season 4, Episode 5
![...on its center axis
until the lights turn green.
...on its center axis
until the lights turn green.](data:image/png;base64,R0lGODlhAQABAAD/ACwAAAAAAQABAAACADs=)
...on its center AXIS
until the lights turn green.
The Big Bang Theory Season 8, Episode 22