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So they need to be mathematically, directly connected somehow.
You have to have some way to equate the two, at least interrelate them.
Which is where we get, "spacetime".
Next, inertial mass.
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.
Thus, inertial mass.
And finally, "curvature of spacetime".
For most of human history, we thought of a plane as a flat surface.
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.
And that makes sense.
After all, that's how we experience the world.
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.
Thinking of reality existing in flat planes is also wrong.
The spacetime plane of reality is often curved by the gravitational force of massive bodies
In fact, the curvature of spacetime is really a way to just stop conceiving of gravity as its own, unique force.
And rather,think of massive bodies distorting the plane of reality.
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
Which is defined by the distorted spacetime, created by the massive sun.
This is useful, as it helps us understand why even massless things like
light are still affected by this distortion.
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.
We have to use a more advanced, non-euclidean geometry to calculate the stuff accurately
So, for example, traveling in a straight line, through such a distortion might still result in a curved trajectory.
Even though you never altered your course.
I'm probably starting to lose some of you now, so I'll go ahead and stop here.
Thanks again to all of the physicists who helped us fact-check this.
You made it abundantly clear how much deeper the rabbit hole goes.
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.
Either way, I hope you all enjoyed the science.
We'll be back to our regular thing next week.
See you then.
music
[Singing in Native language]
[Cheering and clapping]
I bet you half of my dance group doesn't know
I am a UAA Alumni.
[People cheering]
[Singing in Native language]
[Clapping]
Mary Sherbit.
She is a junior majoring in
Bilogical Science, Yupik from Twin Hills modeling a kuspuk made out of a shower curtain.
[Clapping]
This shower curtain was made by UAA
Professor Phyilis Fast who is Koyukon Athabascan.
Next we have Victor Olanick.
Jr.
Victor is Inupiaq from the community of Noatak but he is modeling a
Denaina Athabascan inspired vest.
[Singing in Native language]
He too is wearing a sustainability inspired regalia piece.
It's a button robe made of organic garbage bag.
A red duct tape, white duct tape and also everybody's favorite Walmart bags.
[Clapping]
Next for Southeast Alaska we have Madison Suits.
She's four years old.
She is Tlingit.
She's wearing Aleut head dress given to her by her great Auntie Paulette Larino.
Thank you.
[Clapping]
I'd like to welcome all the students who want to come to India.
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.
Welcome to India!
Hi, my name is Rachel Kimpton and
I go to the University of Minnesota.
I'm a senior and I'm double majoring in
Global Studies and Political Science.
I'm Lindsay.
I go to the University of Minnesota and I study Pre-Law.
I picked the MSlD Program because
I want to go into nonprofits and this program allowed me to experience what an NGO in a different country would be like.
I also chose this program because
I get to stay with a family.
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.
It's way easier having an outlet and some people who
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.
They take us places that I wouldn't know of on my own.
We also get to converse with a couple of Indian students that come from the University here which I think is really cool.
We are taking Hindi and right now it's spilt up into beginners and advanced.
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.
I think just being here in general speaking my Hindi has increased dramatically than it had back home.
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.
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.
So we picked a track.
We have n't started that yet but it will more of a three to four smaller people one on one with the teacher .
My host family is great.
I have a mother and her husband who works for the government so he actually is stationed four hours away.
We have two siblings who are seven and eight a boy and a girl and we also have our grandfather living with us.
I love talking with my mom every night and during meals it's a lot of fun.
I really enjoy my host family.
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
literally on the other side of the world live.
It's usually not a nuclear family.
Here it's like parents, kids, aunts and uncles and grandparents all live together sometimes.
Jaipur is like a city on fast forward and condensed.
There are just so many people and it's a really ineresting combination of the historical past of India with the boldness of now.
Jaipur is really different from home because here it's a lot louder, there's a lot of people the traffic here is crazy,
People don't know the difference between red and green light and slowing down and people just go whenever.
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.
I'm really surprised by how quickly you transform to where you are living.