This episode shows a group discussing the whirlybird scenario that they saw the day before. After the demo outside, the class went into the lobby and made Energy Cube Diagrams of the scenario. The discussion after the Energy Cube Diagrams was the first that week to include gravitational energy.
This clip comes from the fourth day of the workshops. (It's the episode of UE1 120629 T6 912 Bugged me for years.)
Heidi:
And that - yesterday, when we were down in the lobby, it confused me because that totally made sense, until
I started thinking about um, atmospheric pressure, because the closer you are
to earth, the greater your atmospheric pressure is, and so like a barometer is
gonna. It seems like a barometer would act just the opposite of something that
was detecting gravity. I don't- That was confu-, I shouldn't even talk about
that, but it's been confusing me.-
Sabina:
Yeah, that [inaudible] answer your question, huh, that's gravitational.
Heidi:
Because the more air you have above you-
Dan:
More pressure-
Heidi:
- the greater your- Yeah.
Sabina:
Oh.
Heidi:
And so it seems opposite of, then if we're thinking of pull of the earth,
rather than push of from above. I guess that makes sense.
Dan:
The pressure's higher above-
Kelly:
I think, I think the pressure's another force that we're going to try to weed
out here.
Heidi:
Okay, good.
Kelly:
We're like not even-
Heidi:
I confused myself, so-
]Kelly:
I mean we're not going to think about it.
Heidi:
-I confused you guys.
Doug:
I think, yeah, I think-
Kelly:
This is, I think it's a good thing to ponder, but...
Doug:
-putting it aside. Yeah, that would be good. It, I think it's, it's connected
because we have an atmosphere plus gravity, and so gravity's pulling it down.
Heidi:
Mm-hmm.
Doug:
The air has weight.
Heidi:
Mm-hmm.
Doug:
And it's pushing down, it's being pushed, it's being pulled down, so it's
pushing on what's below it, so that's the pressure. But I think it's good for
us to suspend as many of those factors as possible-
Heidi:
Right. Okay.
Doug:
-because it allows us to...
Kelly:
Yeah, I think it's a great idea to ponder.
Heidi:
Yeah, I'm sorry.
Kelly:
And I appreciate you having it, it's just...
Doug:
I, once we-
Heidi:
Sorry, talk about my confusion.
Kelly:
No, I think it's great.
Dan:
No, that's all these questions and things we have in our heads.
Doug:
And I think once we get the basic story down, then as time allows, I think it
would be great to get into that.
Heidi:
Okay.
Dan:
What if we put down those things, maybe just off the the side, so we don't
lose-
Heidi:
Okay.
Dan:-
and not, not we're not valuing it, \but we can add it to the question board
afterward-
Kelly:
So, we want to put some like-
Dan:
- like your questions as well.
Kelly:
Confused, to ponder.
Hedi:
Yeah.
Doug:
Hah, hah, hah.
Dan:
Not now.
Heidi:
And I think the-
Kelly:
Right.
Heidi:
-the way you were saying, if you think of gravity as a pull rather than a push? That totally clears it up, because it's not something pushing from above. If
it's pulling from below, that totally makes sense with the pressure and the
gravity then. So, thank you. That's bugged me from year, thinking about that.
Some researchers were ambivalent: were there other group members really valuing Heidi's idea? There did not show that they understood Heidi's idea, and Kelly identifies it simply as a force, and therefore something we shouldn't discuss now (because the instructor have recommended not thinking about forces at this point).
Does Heidi feel bad? She presents the topic as one that she doesn't think they'll want to discuss, and apologizes repeatedly. At the end, when she thanks Doug, is she genuinely happy because she feels some clarification of her dilemma, or is she just sort of relieved that she won't be feeling bad (by bringing up an undesired topic).
Doug seems to want to talk about Heidi's idea of air pressure. Although he says they should set it aside, he explains his understanding of the connection of air pressure and gravity.
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