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Daily 011: Wondrous Wednesday - Double Slit Experiment

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Summary

First JC team completes service. Structure forming around fallen tree. History session on safety bicycles and feminism. Introduction to quantum mechanics double slit experiment.

Transcript

0:00 All right, welcome to Arts and Ideas in the air, under the tent, and around Baltimore.
0:07 Your daily news podcast for the goings ons here at Arts and Ideas.
0:13 And I've got to say, today is a really lovely day.
0:16 I say this a lot, but it's really been beautiful weather.
0:18 I mean, I just can't get over how gorgeous this September has really been, and I am grateful
0:23 to be able to have an office that is a big tent out in the field.
0:30 You know, we don't really have any bug issues, you know, there's some, but pretty much nothing
0:38 really bothersome.
0:40 And it's just been very, very breezy and cool and warm and sunny and just all of them combined
0:48 is just amazing.
0:49 Anyway, the goings ons today.
0:52 So our first JC team is now done.
0:57 Yesterday we passed a rule saying that every day that we don't have a JC, the current team
1:02 gets a half day served, and the first team has now been completed under that new regime.
1:12 So tomorrow we'll start with the second team and we'll see if we have any JC cases.
1:18 And let's see, what else?
1:20 Still some more gaga pit playing today.
1:24 I believe we might see some photos of that in the newsletter later this week.
1:29 There's a structure that's slowly forming around a fallen tree right next to the gaga
1:33 pit.
1:34 So that's exciting to see just how that will turn out.
1:39 At one o'clock and perhaps still going on, I'm not sure, it was a history session run
1:45 by Josh.
1:46 I believe the topic today was safety bicycles and how that interacted with feminism.
1:55 On Friday we're going to have Article Club, I believe at 11am, and the article is a short
2:05 story by Asimov called Profession.
2:10 I've heard some glowing reviews from it from some school media members who have been reading
2:15 it.
2:16 So that's exciting.
2:17 I hope we have a good turnout.
2:20 And then another item of note is tomorrow night at 7pm is our assembly meeting.
2:27 This is open to all students, staff, and parents of students.
2:34 Staff are meeting today to kind of figure out a good agenda and that email should hopefully
2:41 be going out today to remind everyone about the meeting.
2:45 I believe that is all the goings ons that I am aware of.
2:50 There are of course lots, oh, there was one more thing.
2:53 We are starting to actually have our computer daily assignments starting.
2:59 We collected all the preferences today of students and hopefully that process will go
3:04 smoothly.
3:06 If not, I'm sure we'll have some JC cases, which is always good.
3:10 Anyway, so that concludes the daily news.
3:14 It is wondrous Wednesday, so where either something that one ponders and wonders about
3:23 or just something kind of wondrous.
3:27 Today I thought I'd just mention something from my quantum mechanics experience, namely
3:35 the double slit experiment.
3:37 So for those who are not familiar, the idea is you have a wall or some kind of barrier
3:43 with two slits and you aim something like electrons or photons at those slits and you
3:52 see what happens.
3:56 Basically what happens is if you just have one slit, you see this gathering like everything
4:06 just goes through the slit.
4:07 If you have two slits, all of a sudden you'll see interference patterns, meaning you'll
4:13 have patterns of light and dark, let's say using photons, the particles of light.
4:20 So you have this interference band and that's cool and you're like, okay, light's a wave.
4:27 But then you can put detectors behind the slits to decide which slit something went
4:39 through.
4:40 Now a wave usually goes through both, but if you put these detectors on there, all of
4:48 a sudden it's as if it was just one slit and so the interference pattern disappears.
4:54 You still get sort of this gathering on the far wall or on your screen or whatever and
5:02 so because we have measured it in the sense of a particle, it seems to have kind of collapsed
5:10 and started to behave like a particle.
5:12 That's sort of the general thinking.
5:15 So that's kind of the double slit experiment.
5:18 It's often considered like one of those mysterious things that leads to the idea of particle
5:26 or electrons or photons being both a particle, something with a definite position and a wave
5:32 which is just kind of spread out all over the place.
5:35 And depending on what one is doing to it, you'll see one behavior or another.
5:40 Now that's kind of a standard viewpoint.
5:44 There's another viewpoint which I might bring up next week, but to think about it a bit,
5:52 one clue as to what's going on is you can dial down the intensity and so that even with
6:00 the two slits open, essentially kind of just one particle goes through.
6:03 So you just see like one dot hit the screen and as you go over time, you can see the interference
6:10 pattern build up.
6:11 So there is an interference pattern, but it's always being conveyed by a single sort of
6:16 dot at a time hitting the screen.
6:20 So there's your clue.
6:22 We'll see if we can resolve it next week.
6:26 Hope everyone's having a great day.
6:28 Hope everyone got to experience the wondrous weather and beautiful sunshine and stretch
6:35 their legs and enjoy the open air.
6:40 Have a good day and see y'all later.