What is torque? This is one of those things that you may have heard about in passing but never really understood. In this episode of Crash Course Physics, Shini sits down with us to discuss what torque is, how it works, why it works, and what it all has to do with this thing called "moment of inertia."

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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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Why is it hard to move a heavy bookcase across a carpeted floor? And why is it easier to keep it moving than it was to get it started moving? You might think it's all about weight, but actually it's about friction. Two kinds of friction! In today's episode of Crash Course Physics, Shini Somara tells us about Static and Kinetic friction; how they work and how they're different.


***

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios


Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks


--

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In this, THE FIRST EPISODE of Crash Course Physics, your host Dr. Shini Somara introduces us to the ideas of motion in a straight line. She talks about displacement, acceleration, time, velocity, and the definition of acceleration. Also, how does a physicist discuss speed as opposed to a police officer? And did you deserve that ticket? You can figure it all out with the help of Physics!

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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

--

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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

So today Craig is going to look at political ideology in America. We're going to focus on liberals and conservatives and talk about the influencers of both of these viewpoints. Now, it's important to remember that political ideologies don't always perfectly correspond with political parties, and this correspondence becomes less and less likely over time. So, sure we can say that Democrats tend to be liberal and Republicans tend to be conservative, but we're not going to be talking about political parties in this episode. It's also important to note, that there are going to be a lot of generalizations here, as most peoples' ideologies fall on a spectrum, but we're going to try our best *crosses fingers* to summarize the most commonly held viewpoints for each of these positions as they are used pretty frequently in discussions of American politics.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 4.0

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Functional groups? Functional groups within functional groups? Hank takes today's Crash Course video to discuss some confusing ideas about Hydrocarbon Derivatives but then makes it all make more sense.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: https://apple.co/3d4eyZo
Download it here for Android Devices: https://bit.ly/2SrDulJ

--
Table of Contents

Alcohols 1:53
Hydroxyl Groups 3:51
Aldehydes 2:47
Carboxylic Acid 4:06
Acetone is a Ketone 4:43
Ethers and Esters 5:49
Amines 6:39

--

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Today, we’re going to wrap up our discussion of economic policy by looking at government regulation. We're going to talk about the government's goals for the U.S. economy and the policies it employs to achieve those goals. Ever since the New Deal, we've seen an increased role of the government within the economy - even with the deregulation initiatives of President Carter and Reagan in the 80's. Now this is all pretty controversial and we're going to talk about it, as this is a long way from the federal government handed down by the framers of the constitution.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 4.0
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Today, we’re going to take a look at how the government plays a role in the economy. Specifically, the way the government creates and maintains our market economic system. Now sure, the government’s role in the economy can be controversial, some may even say completely unnecessary. But there are some deficiencies in a free market, and we’re going to look at those, and the tools the government uses to combat those issues in maintaining a healthy and stable economy.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 4.0
https://creativecommons.org/licenses/...

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In this episode of Crash Course Psychology, Hank has a look at that oh-so-troublesome time in everyone's life: Adolescence! He talks about identity, individuality, and The Breakfast Club.

Want more videos about psychology? Check out our sister channel SciShow Psych at https://www.youtube.com/scishowpsych!

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Chapters:
Introduction: The Breakfast Club 00:00
Erikson's 8 Stages of Progressive Psychosocial Development 2:05
Adolescence: Identity vs. Role Confusion 2:51
Young Adulthood: Intimacy vs. Isolation 3:39
Middle Adulthood: Generativity vs. Stagnation 4:35
Late Adulthood: Integrity vs. Despair 5:10
Physical Changes in Adulthood 5:57
Fluid & Crystallized Intelligence 6:50
Dementia & Alzheimer's Disease 8:10
Review & Credits 9:25
--
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This week Craig Benzine talks about what happens when a case makes it to the Supreme Court of the United States (or the SCOTUS). We're going to focus on court procedure today. We talk about how to petition to get your case heard, how written arguments, or briefs, are made, what actually happens on the courtroom floor, and of course the variety of ways the SCOTUS issues opinions on cases.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All Flickr.com images are licensed under Creative Commons by Attribution 2.0

https://creativecommons.org/li....censes/by/2.0/legalc


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This week Craig is going to continue our discussion of due process. Technically, we started last week with the 4th amendment and search and seizure, but this week we’re going to look at the 5th and 6th amendments and how they ensure a fair trial. We’ll talk about some stuff you tend to hear a lot on tv, like your right to an attorney and a jury of your peers and also terms like “double jeopardy” and “pleading the fifth”. Now, this stuff can get pretty complicated, which is where lawyers come in handy, but it’s important to know your liberties to keep the police and other judicial officers in check.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 2.0

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You're already learning on YouTube — why not get college credit for it? https://link.gostudyhall.com/my1

There is a lot of stress and anxiety around college, whether you're fresh out of high school or you've decided to go back to school years later. It can be tough to navigate. But, one of the best ways to navigate keeping yourself focused so you can succeed is by being aware of the pitfalls. This way, you can head into your college experience with open eyes and the knowledge of the places and people you can turn to for help.

***
Now you can take top-tier college courses with Study Hall! Study Hall videos are available to watch at no cost, and first-year courses are $25 to sign-up and begin coursework. Once you're satisfied with your grade, receive credit for only $400. Sign up at https://link.gostudyhall.com/my1

Follow Study Hall on socials!
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Facebook: https://www.facebook.com/GoStudyHall

_______________________________________________
Chapters:
0:00 - Introduction
3:37 - Physical Health
5:19 - Mindfulness and Meditation
6:11 - Special Interest Groups
8:00 - Conclusion
_______________________________________________

Resources used in this video:
Crisis Text Line (text HOME to 741741-free 24/7 support via text)
National Suicide Prevention Hotline (free 24/7 support over the phone)

What Is Mental Health? | MentalHealth.gov
Active Minds' Student Mental Health Survey - Active Minds: https://www.activeminds.org/ac....tive-minds-student-m
Sleep problems in university students – an intervention (nih.gov): https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC55363
How Long Should You Wait Between Caffeine and Bedtime? (verywellhealth.com): https://www.verywellhealth.com..../how-long-should-you
4 - 7 - 8 sleep - Arizona State University - updated 1-26-15 - YouTube: https://www.youtube.com/watch?v=0J-AH0GihS0
Should You Take a Leave of Absence? | BestColleges: https://www.bestcolleges.com/b....log/leave-of-absence

Learn more about Federal Student Aid: https://studentaid.gov/h/understand-aid

***
Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
__

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CC Kids: http://www.youtube.com/crashcoursekids""""

#CrashCourse #HowtoCollege #StudyHall"

Today we’ll cover the fourth and final of our core disciplines of engineering: chemical engineering. We’ll talk about its history and evolution going from soda ash competitions to oil refineries and renewable energies. We’ll also discuss some newer and emerging fields like biotechnology and pharmaceuticals.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
http://www.chemistryexplained.....com/Kr-Ma/Leblanc-Ni
https://www.keionline.org/book/prizes-lots-of-them
https://www.sciencehistory.org..../historical-profile/
http://www.world-petroleum.org..../edu/223-how-is-crud
https://www.thoughtco.com/hist....ory-of-gasoline-1991
https://www.britannica.com/tec....hnology/cracking-che
https://www.britannica.com/tec....hnology/petroleum-re
https://www.britannica.com/tec....hnology/chemical-eng
https://www.allaboutcareers.co....m/careers/career-pat
https://www.myklassroom.com/En....gineering-branches/2
https://www.impossiblefoods.com/burger/
https://www.eia.gov/energyexpl....ained/?page=biomass_
“Basic Principles and Calculations in Chemical Engineering” by David Mautner Himmelblau, James B. Riggs

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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Slave codes were a method of protecting the investment of white enslavers in the Colonies by restricting the lives of enslaved people in almost every imaginable way. The codes restricted enslaved people’s ability to move around, or engage in commerce that could make them financially independent - they restricted the opportunities that would allow them to live with even relative freedom. Today, we'll learn how Colonies put laws in place to restrict the movement and freedoms of enslaved people and free Black people.

VIDEO SOURCES

Ira Berlin, Many Thousands Gone: The First Two Centuries of Slavery in North America (Cambridge: Harvard University Press, 1998).
John Hope Franklin, From Slavery to Freedom: A History of Negro Americans (New York: Knopf, 1967).
Claude M. Steele, Whistling Vivaldi: How Stereotypes Affect Us and What We Can Do (Reprint Edition ed. 2011).
Black Codes and Slave Codes, Colonial, , Oxford African American Studies Center , http://oxfordaasc.com/view/10.....1093/acref/978019530
Peter H. Wood, Black Majority: Negroes in Colonial South Carolina from 1670 through the Stono Rebellion (New York: W.W. Norton, 1974).
Jennifer L. Morgan, Partus sequitur ventrem: Law, Race, and Reproduction in Colonial Slavery, 22 Small Axe: A Caribbean Journal of Criticism 1–17 (2018).

Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Check out Clint's book: https://bookshop.org/books/how....-the-word-is-passed-

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Alexis B, Rene Duedam, Burt Humburg, Aziz, Nick, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Alan Bridgeman, Jennifer Smith, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, Brandon Westmoreland, team dorsey, Trevin Beattie, Eric Koslow, Indika Siriwardena, Khaled El Shalakany, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, William McGraw, Laura Damon, Andrei Krishkevich, Sam Ferguson, Eric Prestemon, Jirat, Brian Thomas Gossett, Wai Jack Sin, Ian Dundore, Jason A Saslow, Justin, Jessica Wode, Mark, Caleb Weeks
__

VIDEO SOURCES

-Ira Berlin, Many Thousands Gone: The First Two Centuries of Slavery in North America (Cambridge: Harvard University Press, 1998).
-John Hope Franklin, From Slavery to Freedom: A History of Negro Americans (New York: Knopf, 1967).
-Claude M. Steele, Whistling Vivaldi: How Stereotypes Affect Us and What We Can Do (Reprint Edition ed. 2011).
-Black Codes and Slave Codes, Colonial, , Oxford African American Studies Center , http://oxfordaasc.com/view/10.....1093/acref/978019530
-Peter H. Wood, Black Majority: Negroes in Colonial South Carolina from 1670 through the Stono Rebellion (New York: W.W. Norton, 1974).
-Jennifer L. Morgan, Partus sequitur ventrem: Law, Race, and Reproduction in Colonial Slavery, 22 Small Axe: A Caribbean Journal of Criticism 1–17 (2018).

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#crashcourse #history #slavery

You're already learning on YouTube — why not get college credit for it? https://link.gostudyhall.com/my1

In this episode of Crash Course: How to College, Erica helps us think about how to best choose the right school for us. There's a lot to think about, like: what kind of learner you are, what kind of environment you like, how to know if your school is looking out for your success, what kinds of support do different schools offer, and of course what do you want to study?

Crash Course: How to College is part of Study Hall, a partnership between ASU and Crash Course. Head over to our new Study Hall channel to check out our Fast Guide series which break down different college majors.

***
Now you can take top-tier college courses with Study Hall! Study Hall videos are available to watch at no cost, and first-year courses are $25 to sign-up and begin coursework. Once you're satisfied with your grade, receive credit for only $400. Sign up at https://link.gostudyhall.com/my1

Follow Study Hall on socials!
Twitter: https://twitter.com/gostudyhall
Instagram: https://Instagram.com/GoStudyHall
Facebook: https://www.facebook.com/GoStudyHall
__________________________________________________________________________
Chapters:
0:00 - Introduction
1:00 - How to find the right fit
4:10 - Types of colleges to choose from
5:57 - How to choose
6:21 - Modalities
7:09 - Conclusion
__________________

Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
__

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CC Kids: http://www.youtube.com/crashcoursekids"

#CrashCourse #HowtoCollege #StudyHall
***
Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
__

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Did you know that at a certain point on a moving wheel... there's no motion? I mean, kinda... it's all relative, right? Prepare to have your mind blown in this episode of Crash Course Physics where Shini delves into the world of rotational motion!

--

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

--

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Today we’re going to talk about measures of central tendency - those are the numbers that tend to hang out in the middle of our data: the mean, the median, and mode. All of these numbers can be called “averages” and they’re the numbers we tend to see most often - whether it’s in politics when talking about polling or income equality to batting averages in baseball (and cricket) and Amazon reviews. Averages are everywhere so today we’re going to discuss how these measures differ, how their relationship with one another can tell us a lot about the underlying data, and how they are sometimes used to mislead.


Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Nickie Miskell Jr., Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall

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What is globalization? Is globalization a good thing or not. Well, I have an answer that may not surprise you: It's complicated. This week, Jacob and Adriene will argue that globalization is, in aggregate, good. Free trade and globalization tend to provide an overall benefit, and raises average incomes across the globe. The downside is that it isn't good for every individual in the system. In some countries, manufacturing jobs move to places where labor costs are lower. And some countries that receive the influx of jobs aren't prepared to deal with it, from a regulatory standpoint. Anyway, Jacob and Adriene can explain the whole thing to you in 10 minutes.

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks

--

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You're already learning on YouTube — why not get college credit for it? https://link.gostudyhall.com/my1

Now that we're to the point of actually applying for college, things can get a little overwhelming. But, not to worry, Erica has some helpful ways to manage everything you need to keep track of, fill out, and even ways to save some money in fees.

***
Now you can take top-tier college courses with Study Hall! Study Hall videos are available to watch at no cost, and first-year courses are $25 to sign-up and begin coursework. Once you're satisfied with your grade, receive credit for only $400. Sign up at https://link.gostudyhall.com/my1

Follow Study Hall on socials!
Twitter: https://twitter.com/gostudyhall
Instagram: https://Instagram.com/GoStudyHall
Facebook: https://www.facebook.com/GoStudyHall
_______________________________________________
Chapters:
0:00 - Introduction
0:49 - List of schools
3:30 - Documents to assemble
4:12 - Writing samples
7:11 - Conclusion
_______________________________________________

Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
__

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#CrashCourse #HowtoCollege #StudyHall
***
Watch our videos and review your learning with the Crash Course App!
Download here for Apple Devices: https://apple.co/3d4eyZo
Download here for Android Devices: https://bit.ly/2SrDulJ

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Dave Freeman, Hasan Jamal, DL Singfield, Lisa Owen, Jeremy Mysliwiec, Amelia Ryczek, Ken Davidian, Stephen Akuffo, Toni Miles, Erin Switzer, Steve Segreto, Michael M. Varughese, Kyle & Katherine Callahan, Laurel Stevens, Vincent, Michael Wang, Stacey Gillespie (Stacey J), Alexis B, Burt Humburg, Aziz Y, Shanta, DAVID MORTON HUDSON, Perry Joyce, Scott Harrison, Mark & Susan Billian, Junrong Eric Zhu, Rachel Creager, Breanna Bosso, Matt Curls, Tim Kwist, Jonathan Zbikowski, Jennifer Killen, Sarah & Nathan Catchings, team dorsey, Trevin Beattie, Divonne Holmes à Court, Eric Koslow, Jennifer, Dineen, Indika Siriwardena, Khaled El Shalakany, Jason Rostoker, Shawn Arnold, Siobhán, Ken Penttinen, Nathan Taylor, Les Aker, ClareG, Rizwan Kassim, Alex Hackman, Jirat, Katie Dean, Avi Yashchin, NileMatotle, Wai Jack Sin, Ian Dundore, Justin, Mark, Caleb Weeks
__

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Bridges... bridges, bridges, bridges. We talk a lot about bridges in physics. Why? Because there is A LOT of practical physics that can be learned from the planning and construction of them. In this episode of Crash Course Physics, Shini talks to us about a particular mistake made in engineering the Millennium Bridge which allows us to talk about simple harmonic motion.

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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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This week Craig breaks out the crystal ball to try and figure out why our congresspeople do the things that they do. We’ll talk about the three motivating factors of congressional decisions - constituency, interest groups, and political parties - and we’ll break down how each of these factors motivates certain actions like casework, public opinion polls, and logrolling. Craig will even weigh in on which of these factors probably contributes most significantly to the actions and decisions of our congresspersons and he'll do it without even a touch of cynicism!

Support is provided by Voqal: http://www.voqal.org
This episode is sponsored by Squarespace: http://www.squarespace.com/crashcourse

Chapters:
Introduction 00:00
How constituents & public opinion influence lawmakers 0:38
How interest groups influence lawmakers 2:01
How political parties influence lawmakers 3:07
Presidential power & political parties 4:20
Other influences on congressional decisions 5:20
Credits 6:05

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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This week Craig Benzine discusses bureaucracies. Bureaucracies tend to be associated with unintelligible rules and time-wasting procedures, but they play an important, though controversial, role in governing. From the FDA to the EPA, these agencies were established to help the government manage and carry out laws much more efficiently - to bring rule-making and enforcement closer to the experts. But the federal bureaucracy (which is part of the executive branch) has a lot of power and sometimes acts like Congress in creating regulations and like the courts through administrative adjudications. It's all a bit problematic for that whole "separation of powers" thing. So we'll talk about that too, and the arguments for and against increased federal bureaucracy.

Support is provided by Voqal: http://www.voqal.org

Chapters:
Introduction: Craig does paperwork 00:00
What is bureaucracy? 0:51
What do bureaucrats do? 1:34
Bureaucracy & division of powers 2:19
Bureaucracy & regulations 2:43
Bureaucracy & administrative adjudications 3:36
Why do we have bureaucracy? 4:15
Credits 6:25

--
Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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Just how small are nanomaterials? And what can we do with stuff that small? Today we’ll discuss some special properties of nanomaterials, how some can change at different sizes, and the difference between engineered nanomaterials and ones that occur naturally. We’ll also talk about some of the future research that’s needed on the use of nanomaterials.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

Check out Deep Look: https://www.youtube.com/channe....l/UC-3SbfTPJsL8fJAPK

***

RESOURCES:
http://www.safenano.org/knowle....dgebase/resources/fa
https://www.niehs.nih.gov/heal....th/topics/agents/sya
https://ec.europa.eu/health/sc....ientific_committees/
https://www.nano.gov/nanotech-101/what/seeing-nano
https://www.britannica.com/tec....hnology/nanotechnolo
http://www.essentialchemicalin....dustry.org/materials
https://www.britannica.com/tec....hnology/scanning-tun
http://www.hwnanomaterial.com/nanomaterials_n63
https://www.hindawi.com/journa....ls/amse/2016/4964828
https://www.nano.gov/nanotech-101/special
https://www.zdnet.com/article/....nanotechnology-to-en
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC42403
http://news.mit.edu/2014/solid....-nanoparticles-defor
https://www.nanoscience.com/ap....plications/education
http://www.understandingnano.c....om/nanotubes-carbon.
http://newscenter.lbl.gov/2016..../10/06/smallest-tran
https://www.theverge.com/circu....itbreaker/2016/10/6/

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Ian Dundore
--

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Today, Craig Benzine is going to tell you about the Supreme Court's most important case, Marbury v. Madison, and how the court granted itself the power of judicial review. Judicial review is the power to examine and invalidate actions of the legislative and executive branches. It happens at both the state and federal court levels, but today we're going to focus primarily on the court at the top - the Supreme Court of the United States. Now it's important to remember that the court has granted itself these powers and they aren't found within the Constitution, but as with the executive and legislative branches, the courts rely heavily on implied powers to get stuff done.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All Flickr.com images are licensed under Creative Commons by Attribution 2.0

https://creativecommons.org/li....censes/by/2.0/legalc

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Today, Craig is going to talk about political parties and their role in American politics. So, when most people think about political parties they associate them with the common ideologies of the voters and representatives within that party, but the goal of a party is NOT to influence policies. The role of political parties is much simpler: to win control of the government. So today, we’re going got talk about why we have political parties in the first place and then finish with the five functions they use in reaching that goal. It’s a lot to cover, so next week we’ll talk about what each political party stands for and how that has changed historically.

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 4.0
https://creativecommons.org/licenses/...

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This week we’re exploring aerospace engineering and its two main fields: aeronautical engineering and astronautical engineering. We’ll explore life & buoyancy, propulsion systems, and the challenges of managing the human body in space.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

PBS Space Time: https://www.youtube.com/channe....l/UC7_gcs09iThXybpVg

***

RESOURCES:
https://www.history.com/topics/space-race
https://www.spacex.com/mars
https://www.princeton.edu/~asm....its/Bicycle_web/Bern
https://www.livescience.com/47....702-aerospace-engine
https://www.bls.gov/ooh/archit....ecture-and-engineeri
https://www.real-world-physics....-problems.com/hot-ai
https://www.grc.nasa.gov/www/k....-12/airplane/bgp.htm
https://www.sciencedirect.com/....science/article/pii/
https://www.nasa.gov/audience/....forstudents/5-8/feat
https://www.nasa.gov/hrp/bodyinspace
https://www.space.com/25452-ze....ro-gravity-affects-a
https://www.space.com/21353-sp....ace-radiation-mars-m
http://www.planetary.org/blogs..../guest-blogs/2018/04
https://www.nasa.gov/feature/g....oddard/the-fact-and-
https://www.space.com/16907-wh....at-is-the-temperatur
https://www.wired.com/2010/11/....1110mars-climate-obs
http://edition.cnn.com/TECH/sp....ace/9909/30/mars.met
https://www.nasa.gov/audience/....forstudents/k-4/stor
http://www.engineeringchallenges.org/8965.aspx
https://www.nasa.gov/feature/t....he-next-generation-o
http://curious.astro.cornell.e....du/about-us/150-peop
https://engineering.purdue.edu..../~propulsi/propulsio
https://www.grc.nasa.gov/www/k....-12/airplane/inlet.h


***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Eric Prestemon, Sam Buck, Mark Brouwer, Naman Goel, Patrick Wiener II, Nathan Catchings, Efrain R. Pedroza, Brandon Westmoreland, dorsey, Indika Siriwardena, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

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CC Kids: http://www.youtube.com/crashcoursekids