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So they need to be mathematically, directly connected somehow.
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You have to have some way to equate the two, at least interrelate them.
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Which is where we get, "spacetime".
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Next, inertial mass.
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Once you get to relativity, you need to stop thinking of mass being a quantity of stuff, and start thinking about it as, simply meaning, resistance to being accelerated, or, inertia.
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Thus, inertial mass.
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And finally, "curvature of spacetime".
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For most of human history, we thought of a plane as a flat surface.
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If you go back to Euclid, who set out the cornerstone logic that would define all of our mathematics up through calculus, you'll find that's essentially how he defined a plane with postulate 5, so that how we've always seen it.
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And that makes sense.
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After all, that's how we experience the world.
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But much in the same way that thinking about the world being flat is wrong, even though for the majority of our daily lives, it might as well be.
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Thinking of reality existing in flat planes is also wrong.
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The spacetime plane of reality is often curved by the gravitational force of massive bodies
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In fact, the curvature of spacetime is really a way to just stop conceiving of gravity as its own, unique force.
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And rather,think of massive bodies distorting the plane of reality.
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If we think in terms of our flat geometry, we percieve the sun to be exerting a gravitational force that makes the Earth orbit in a curve but in curved spacetime, the Earth actually traves in a straight line
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Which is defined by the distorted spacetime, created by the massive sun.
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This is useful, as it helps us understand why even massless things like
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light are still affected by this distortion.
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All this really means in a sci-fi sense is that we can't rely on our traditional geometry to understand how things work in these sections.
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We have to use a more advanced, non-euclidean geometry to calculate the stuff accurately
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So, for example, traveling in a straight line, through such a distortion might still result in a curved trajectory.
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Even though you never altered your course.
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I'm probably starting to lose some of you now, so I'll go ahead and stop here.
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Thanks again to all of the physicists who helped us fact-check this.
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You made it abundantly clear how much deeper the rabbit hole goes.
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If nothing else, I hope this is at least shown how much digging and research can be done before you can start throwing these terms around.
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Either way, I hope you all enjoyed the science.
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We'll be back to our regular thing next week.
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See you then.
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music
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[Singing in Native language]
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[Cheering and clapping]
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I bet you half of my dance group doesn't know
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I am a UAA Alumni.
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[People cheering]
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[Singing in Native language]
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[Clapping]
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Mary Sherbit.
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She is a junior majoring in
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Bilogical Science, Yupik from Twin Hills modeling a kuspuk made out of a shower curtain.
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[Clapping]
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This shower curtain was made by UAA
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Professor Phyilis Fast who is Koyukon Athabascan.
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Next we have Victor Olanick.
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Jr.
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Victor is Inupiaq from the community of Noatak but he is modeling a
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Denaina Athabascan inspired vest.
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[Singing in Native language]
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He too is wearing a sustainability inspired regalia piece.
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It's a button robe made of organic garbage bag.
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A red duct tape, white duct tape and also everybody's favorite Walmart bags.
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[Clapping]
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Next for Southeast Alaska we have Madison Suits.
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She's four years old.
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She is Tlingit.
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She's wearing Aleut head dress given to her by her great Auntie Paulette Larino.
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Thank you.
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[Clapping]
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I'd like to welcome all the students who want to come to India.
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We have a lot of expectations for India but Jaipur is a great place to take off point and we hope you to give you an experience to remember for always.
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Welcome to India!
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Hi, my name is Rachel Kimpton and
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I go to the University of Minnesota.
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I'm a senior and I'm double majoring in
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Global Studies and Political Science.
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I'm Lindsay.
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I go to the University of Minnesota and I study Pre-Law.
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I picked the MSlD Program because
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I want to go into nonprofits and this program allowed me to experience what an NGO in a different country would be like.
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I also chose this program because
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I get to stay with a family.
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That's an experience that I think really shapes just how everyday life is going to be because you get to experience a culture firsthand.
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It's way easier having an outlet and some people who
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live here who I can talk to who know American students, who've been doing this for a long time and they have the conections with people in society.
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They take us places that I wouldn't know of on my own.
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We also get to converse with a couple of Indian students that come from the University here which I think is really cool.
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We are taking Hindi and right now it's spilt up into beginners and advanced.
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For the advanced, which is what I'm in we've been going out to the markets a little bit and our teacher has been pushing us to converse with people here.
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I think just being here in general speaking my Hindi has increased dramatically than it had back home.
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We are also taking Global Development or International Development and it's pretty much just a broad view of different aspects of development throughout the world and then how we can relate that to what's going on here in India.
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The third class is kind of a course analysis so we've been given a background of India, a history of Rajasthan, the state we're in and then next week we start a class on our internship phase.
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So we picked a track.
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We have n't started that yet but it will more of a three to four smaller people one on one with the teacher .
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My host family is great.
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I have a mother and her husband who works for the government so he actually is stationed four hours away.
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We have two siblings who are seven and eight a boy and a girl and we also have our grandfather living with us.
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I love talking with my mom every night and during meals it's a lot of fun.
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I really enjoy my host family.
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It's really cool to be in a family because there is a lot of similarities but there is a lot of differences too so it's interesting to see how people on
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literally on the other side of the world live.
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It's usually not a nuclear family.
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Here it's like parents, kids, aunts and uncles and grandparents all live together sometimes.
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Jaipur is like a city on fast forward and condensed.
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There are just so many people and it's a really ineresting combination of the historical past of India with the boldness of now.
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Jaipur is really different from home because here it's a lot louder, there's a lot of people the traffic here is crazy,
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People don't know the difference between red and green light and slowing down and people just go whenever.
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I feel like Jaipur has become a second home because I feel comfortable and there's my host family and sometimes they remind me of family back at home.
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I'm really surprised by how quickly you transform to where you are living.
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