Visit my FB Gallery: https://www.facebook.com/LeonardoPereznieto
Visit my website: http://www.artistleonardo.com/

Do you want to help me translating the subtitles into your language?
All you need to do is translate the file at the link below and send it to me:
https://docs.google.com/file/d..../0B0UOw8r7hWG2NTVBSy

Please send it to me as a Youtube personal message using this link: http://www.youtube.com/inbox?to_user_ext_ids=aapxaQKJFJ6XC56CHgeTzw&action_compose=1

Visit: http://www.fineartebooks.com/ for free drawing tutorials.

If you would like to invest in a drawing, painting or sculpture by Leonardo Pereznieto, please write to: info@leonardopereznieto.com

List of materials:

Black lead holder: H lead
Red lead holder: 4B lead
Charcoal pencil HB
Kneaded eraser (Prismacolor)
Stick eraser
Soft, synthetic brush
Fabriano white drawing paper, fine grain

To see my blog about materials, please click on the following link:

http://www.fineartebooks.com/howtodraw_drawingschool/My_Blog/My_Blog.html

You may also follow me on:

My Blog: http://www.fineartebooks.com/howtodraw_drawingschool/My_Blog/My_Blog.html

Twitter: https://twitter.com/#!/ArtistLeonardo

LinkedIn: http://www.linkedin.com/profile/view?id=89957576&trk=tab_pro

Google+: https://plus.google.com/u/0/10....0373866809472929876/

VK: http://vk.com/leonardopereznieto

Leonardo Pereznieto: http://www.leonardopereznieto.com/leo/Intro.html

This tutorial shows how to draw a glass of water with pencil and chalk, how to draw glass and how to draw a water drop.
كيفية رسم كوب من الماء
Как рисовать стакан воды
Cum să atragă un pahar de apă
Come disegnare un Bicchiere d'Acqua
Jak rysować w szklance wody
Hoe maak je een glas water te putten
Kaip Lygiosios stikline vandens
How to Draw ein Glas Wasser
Comment dessiner un verre d'eau
Cách vẽ ly nước bằng thủy tinh
Як Намалювати Склянку Води
Hvordan tegne et glass med vann

Oil on paper, 12 x 12 inches

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▷ For prints and original paintings please visit https://dariacallie.com/store/


CONNECT WITH ME:
Instagram: https://www.instagram.com/dariacallie/
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Website: https://www.dariacallie.com/


• Oil paints - "Nevskaya palitra"
Colors: Burnt Umber, Cadmium Yellow Pale, Ultramarine Blue, Cadmium Red and Titanium White.
In addition I have a couple of colors that I use sometimes: Ivory Black, Celestial Blue and Cobalt Violet Deep.
• Primed 280gsm paper
• Paint thinner (odorless mineral spirits)
• Medium (stand linseed oil)
• Brushes - Detail brushes & Filbert synthetic brushes of different sizes
• Glass palette (homemade)
• Palette knife (from a local art-store)
• Paper towels (or tissues that I use to wipe the brushes)


Music: “One Last Time (Instrumental)” by Amarante
https://soundcloud.com/amarantemusic
https://www.youtube.com/AmaranteMusic

In this video I'm talking about blending and showing you my approach

REAL-TIME PAINTING VIDEOS, TUTORIALS and other helpful materials ▶ https://www.patreon.com/dariacallie/overview


Commissions: closed.

CONNECT WITH ME:
Instagram: https://www.instagram.com/dariacallie/
Facebook: https://www.facebook.com/DariaCallieArt/
Website: https://www.dariacallie.com/


Materials used:
• Oil paints - "Nevskaya palitra"
Colors: Burnt Umber, Cadmium Yellow Pale, Ultramarine Blue, Cadmium Red and Titanium White.
• Frosted acrylic panels
• Paint thinner (odorless mineral spirits)
• Medium (stand linseed oil)
• Brushes - round detail brushes in sizes 1, 0 and 00; and synthetic filbert brushes in different sizes.
• Glass palette
• Palette knife
• Paper towels

In this video I share some highlights from my Patreon painting tutorials.

REAL-TIME PAINTING VIDEOS, TUTORIALS and other helpful materials ▶ https://www.patreon.com/dariacallie

In my recent walk-through painting tutorial on Patreon I talk about:
Part 1: Surface preparation, concept sketching, taking a reference photo, color mixing, transferring the outlines.
Part 2: Painting a portrait, oil painting tips, common mistakes.
Part 3: Analyzing, adjusting things, glazing and basically doing all the finishing touches.

▷ For prints and original paintings please visit https://dariacallie.com/store/



CONNECT WITH ME:
Instagram: https://www.instagram.com/dariacallie/
Facebook: https://www.facebook.com/DariaCallieArt/
Website: https://www.dariacallie.com/


Materials used:
• Oil paints - "Nevskaya palitra"
Colors: Burnt Umber, Cadmium Yellow Pale, Ultramarine Blue, Cadmium Red and Titanium White.
For glazing I used Cadmium Red, Cadmium Yellow Pale and Cobalt Violet Deep.
• Primed 280gsm paper or linen canvas
• Acrylic primer “Sonnet”
• Paint thinner (odorless mineral spirits)
• Medium (stand linseed oil)
• Brushes - Detail brushes & Filbert synthetic brushes of different sizes
• Glass palette (homemade)
• Palette knife (from a local art-store)
• Paper towels (or tissues that I use to wipe the brushes)

Viewers like you help make PBS (Thank you

Viewers like you help make PBS (Thank you

Try CuriosityStream today: http://curiositystream.com/eons

Despite the name, we don’t know where the so-called “hell pigs” belong in the mammalian family tree. They walked on hooves, like pigs do, but had longer legs, almost like deer. They had hunched backs, a bit like rhinos or bison. But as is often, if not always, the case, there is some evolutionary method to this anatomical madness.

Thanks to Ceri Thomas for the excellent Entelodont illustrations! Check out more of Ceri's paleoart at http://alphynix.tumblr.com and http://nixillustration.com

And thanks to Julio Lacerda and Lucas Lima for their wonderful illustrations. You can find more of their work here: https://252mya.com/

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

Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Anthony Callaghan, Zachary Spencer, Stefan Weber, Ilya Murashov, Charles Kahle, Robert Amling, Po Foon Kwong, Larry Wilson, Merri Snaidman, Renzo Caimi Ordenes, John Vanek, Neil H. Gray, Esmeralda Rupp-Spangle, Gregory Donovan, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Todd Dittman, Betsy Radley, PS, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Alex Yan

If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards!

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Facebook - https://www.facebook.com/eonsshow
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References:
https://docs.google.com/docume....nt/d/1Ie3bYTS7zlmi03

Check out Origin of Everything: https://www.youtube.com/channe....l/UCiB8h9jD2Mlxx96ZF

Today, our closest evolutionary relatives, the apes, live only in small pockets of Africa and Asia. But back in the Miocene epoch, apes occupied all of Europe. Why aren’t there wild apes in Europe today?

Special thanks to https://AfricanFossils.org for allowing us to use their images of Proconsul and Ekembo fossils.

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

Super special thanks to the following Patreon patrons for helping make Eons possible:

Katie Fichtner, Anthony Callaghan, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, سلطان الخليفي, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan

If you'd like to support the channel, head over to http://patreon.com/eons and pledge for some cool rewards!

Want to follow Eons elsewhere on the internet?
Facebook - https://www.facebook.com/eonsshow
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References:
https://anthropology.utoronto.....ca/Faculty/Begun/beg
https://www.nature.com/scitabl....e/knowledge/library/
http://humanorigins.si.edu/res....earch/climate-and-hu
http://johnhawks.net/weblog/fo....ssils/miocene/graeco
https://news.google.com/newspapers?id=qBoqAAAAIBAJ&sjid=oyYEAAAAIBAJ&pg=2472,5867929&dq=oreopithecus&hl=en
https://www.smithsonianmag.com..../science-nature/huma
http://europepmc.org/abstract/MED/14529649
https://www.ncbi.nlm.nih.gov/pubmed/23280922
http://science.sciencemag.org/....content/350/6260/aab
https://www.ncbi.nlm.nih.gov/pubmed/28012461
https://www.nature.com/articles/382349a0
https://anthropology.utoronto.....ca/Faculty/Begun/han
https://anthropology.utoronto.....ca/Faculty/Begun/cra
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0038-23532017000700003
https://journals.plos.org/plos....one/article?id=10.13
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC30783
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/24242778
https://journals.plos.org/plos....one/article?id=10.13
https://www.sajs.co.za/article/view/5149
http://science.sciencemag.org/content/327/5965/532
https://pubs.geoscienceworld.o....rg/gsa/geology/artic
https://pdfs.semanticscholar.o....rg/88f2/1ff1b2196d32
http://www.bioone.org/doi/abs/....10.2110/palo.2004.p0
http://sciencepress.mnhn.fr/en..../periodiques/geodive
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/26932906
https://www.ncbi.nlm.nih.gov/pubmed/12069506
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/23473739
https://www.ncbi.nlm.nih.gov/pubmed/11333976

In the aftermath of a 8 – 20 solar mass star’s demise we find a weird little object known as a neutron star. Neutrons stars are incredibly dense, spin rapidly, and have very strong magnetic fields. Some of them we see as pulsars, flashing in brightness as they spin. Neutrons stars with the strongest magnetic fields are called magnetars, and are capable of colossal bursts of energy that can be detected over vast distances.

Crash Course Astronomy Poster: http://store.dftba.com/product....s/crashcourse-astron

--

Table of Contents
A Star Can Collapse to Form a Neutron Star 0:59
Neutron Star Characteristics 2:24
Pulsars 5:56
Magnetars 8:15

--

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Follow Phil on Twitter: https://twitter.com/badastronomer

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--

PHOTOS/VIDEOS
Star Burst https://svs.gsfc.nasa.gov/cgi-....bin/details.cgi?aid= [credit: NASA's Goddard Space Flight Center]
X-ray Images of G292.0+1.8 http://chandra.harvard.edu/res....ources/animations/sn [credit: X-ray: NASA/CXC/Penn State/S.Park et al.; Optical: Pal.Obs. DSS]
Neutron star cross section https://commons.wikimedia.org/....wiki/File:Neutron_st [credit: NASA]
Fermi Spots 'Superflares' in the Crab Nebula https://www.youtube.com/watch?v=qDhdwgK218E [credit: NASA/Goddard Space Flight Center]
What is a pulsar? https://www.youtube.com/watch?v=gjLk_72V9Bw [credit: NASA's Goddard Space Flight Center]
Jocelyn Bell http://blog.sciencemuseum.org.....uk/insight/2013/03/2 [credit: National Media Museum / Science & Society Picture Library]
Beacons of X-ray Light https://www.youtube.com/watch?v=6p2OGc6a_TQ [credit: NASA/JPL-Caltech]
Chandra Time-Lapse Movie http://chandra.harvard.edu/pho....to/2002/0052/animati [credit: NASA/CXC/ASU/J.Hester et al.]
NASA's Fermi Satellite Finds Hints of Starquakes in Magnetar 'Storm' http://www.nasa.gov/content/go....ddard/nasas-fermi-sa [credit: NASA's Goddard Space Flight Center/S. Wiessinger]
NASA's Swift Reveals New Phenomenon in a Neutron Star http://www.nasa.gov/mission_pa....ges/swift/bursts/new [credit: NASA's Goddard Space Flight Center]
Cosmic Explosion Second Only to the Sun in Brightness https://svs.gsfc.nasa.gov/cgi-....bin/details.cgi?aid= [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom.

You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content.

In which John Green teaches you about the Cold War as it unfolded in Asia. As John pointed out last week, the Cold War was occasionally hot, and a lot of that heat was generated in Asia. This is starting to sound weird with the hot/cold thing, so let's just say that the United States struggle against communist expansion escalated to full-blown, boots on the ground war in Korea and Vietnam. In both of these cases, the United States sent soldiers to intervene in civil wars that it looked like communists might win. That's a bit of a simplification, but John will explain it all to you.

Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. While The Vietnam War was happening very far away from home, it had a major impact on American soldiers and civilians: https://www.commonlit.org/text....s/introduction-to-th

Americans with televisions had the war broadcasted right into their living rooms, leading to an immense Vietnam War resistance effort: https://www.commonlit.org/text....s/resistance-to-the-

Subbable Message! Patreon subscribers can choose a message in the video info as their perk. Here's this week's:
To Ellen, from Charles: I love you, you are the best. Arrr.

Follow us!
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Today we are introducing a new area of philosophy – philosophy of religion. We are starting this unit off with Anselm’s argument for God’s existence, while also considering objections to that argument.

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“That’s a Neigh” David Goehring https://www.flickr.com/photos/carbonnyc/8757020626
All other images via Wikimedia Commons, licensed under Creative Commons by 4.0: https://creativecommons.org/licenses/by/4.0/

--

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

Crash Course Philosophy is sponsored by Squarespace.
http://www.squarespace.com/crashcourse

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This week we explore final ethical theory in this unit: Aristotle’s virtue theory. Hank explains the Golden Mean, and how it exists as the midpoint between vices of excess and deficiency. We’ll also discuss moral exemplars, and introduce the concept of “eudaimonia.”


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The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO


--




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


Crash Course Philosophy is sponsored by Squarespace.
http://www.squarespace.com/crashcourse


--


Want to find Crash Course elsewhere on the internet?
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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

So, who was this Presocrates guy? Just kidding!
Long ago, some philosophers worked very hard to separate myths from what they actually knew about nature.
Thales theorized that everything in the world is made of water. Pythagoras was a mathematical-mystical vegetarian. And Democritus, we all know and love as the Atom Guy…
Meet the Presocratics!

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, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, 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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Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.

Crash Course Biology is now available on DVD! http://dft.ba/-8css

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References for this episode can be found in the Google document here: http://dft.ba/-2HbN

Table of Contents:

1. Population Genetics 1:05
2. Population 1:14
3. Allele Frequency 1:41
4. 5 Factors 1:58
a) Natural Selection 2:12
b) Natural Selection/Random Mating 2:27
c) Mutation 3:18
d) Genetic Drift 3:49
e) Gene Flow 4:05

5. Hardy-Weinberg Principle 4:45
6. Hardy-Weinberg Equilibrium 5:15
7. Hardy-Weinberg Equation 6:18

gregor mendel, heredity, genetics, charles darwin, natural selection, evolution, offspring, population genetics, species, population, generation, allele frequency, allele, selective pressure, sexual selection, non-random mating, preferred traits, fitness, mutation, DNA, genetic drift, chance, gene flow, immigration, emigration, godfrey hardy, wilhelm weinberg, hardy-weinberg equation, hardy-weinberg equilibrium, phenotype, genotype, earwax, mendelian trait, homozygous, heterozygous, evolutionary biology

This video contains the following sound from Freesound.org:

"LucasGonze-HomestyleMandolin-17.aiff" by lucasgonze Support CrashCourse on Subbable: http://subbable.com/crashcourse

Crash Course World History is now available on DVD! Visit http://store.dftba.com/product....s/crashcourse-world- to buy a set for your home or classroom.

You can directly support Crash Course at http://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content.

In which John Green teaches you about the fall of the Roman Empire, which happened considerably later than you may have been told. While the Western Roman Empire fell to barbarians in 476 CE, the Byzantines in Constantinople continued the Eastern Empire nicely, calling themselves Romans for a further 1000 years. Find out what Justinian and the rest of the Byzantine emperors were up to over there, and how the Roman Empire dragged out its famous Decline well into medieval times. In addition to all this, you'll learn about ancient sports riots and hipster barbarians, too.


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•••SUBBABLE MESSAGE•••

TO : Phoebe and James McMullan
FROM : Dad

Continue being awesome Phoebe & James from John & Hank!

***

You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.

***

Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue.

--

Table of Contents:

Epithelial Tissue Creates Inner & Outer Boundaries 2:19.3
Layering: Simple or Stratefied 5:26
Shape: Squamous, Cuboidal, or Columnar 3:34.5
Epithelial Cells Are Polar 7:17.4
Apical & Basal Sides 7:22
Selectively Permeable 7:43
Glandular Epithelial Tissue Forms Endocrine & Exocrine Glands 8:20.3

--

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The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand forever, even as our view of it shrinks while space expands faster all the time.

Crash Course Astronomy Poster: http://store.dftba.com/product....s/crashcourse-astron

--

GEOMETRY OF THE UNIVERSE RESOURCES
Geometry:
http://abyss.uoregon.edu/~js/c....osmo/lectures/lec15.
http://starchild.gsfc.nasa.gov..../docs/StarChild/ques

Expanding faster than light:
http://curious.astro.cornell.e....du/legal-information

General expansion:
https://en.wikipedia.org/wiki/....Metric_expansion_of_

--

Table of Contents
Majority of the Universe is Made of Dark Energy 4:35
Dark Energy Accelerates the Expansion of Space 3:42
We Think The Universe Will Expand Forever 5:20

--

PBS Digital Studios: http://youtube.com/pbsdigitalstudios

Follow Phil on Twitter: https://twitter.com/badastronomer

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Support CrashCourse on Patreon: http://www.patreon.com/crashcourse

--

PHOTOS/VIDEOS
The Big Bang http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA]
Collision Scenario for Milky Way and Andromeda Galaxy Encounter http://www.nasa.gov/images/con....tent/654284main_i122 [credit: NASA; ESA; A. Feild and R. van der Marel, STScI]
Artist's impression of vampire star http://www.spacetelescope.org/videos/astro_bn/ [credit: ESO/M. Kornmesser]
Host Galaxies of Distant Supernovae http://www.nasa.gov/sites/defa....ult/files/images/593 [credit: NASA, ESA, and A. Riess (STScl)]
Dark Energy Expands the Universe http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA]
Expanding Universe http://www.spacetelescope.org/....videos/hst15_expandi [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Hubble Ultra Deep Field 2014 http://hubblesite.org/newscent....er/archive/releases/ [credit: NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)]

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

***

Not sleeping for days on end. Long periods of euphoria. Racing thoughts. Grandiose ideas. Mania. Depression. All of these are symptoms of Bipolar Disorder. In this episode of Crash Course Psychology, Hank talks about mood disorders and their causes as well as how these disorders can impact people's lives.

--
Table of Contents:

What are Mood Disorders? 1:05
Symptoms of Depressive & Bipolar Disorders 2:00
Biological, Genetic, Environmental, & Social-Cognitive
Causes of Mood Disorders 5:47

--
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Last week we introduced Thomas Aquinas’s four cosmological arguments for the existence of god; today we introduce his fifth argument: the teleological argument, and the ensuing dialogue it initiated.

--

Bokeh Spiral by Eric Wüstenhagen: https://www.flickr.com/photos/eriwst/2987739376
Gusano alambre (wireworms) by jacinta lluch valero: https://www.flickr.com/photos/....70626035@N00/8817671
Experimental by Peter Klashorst: https://commons.wikimedia.org/....wiki/File:Baby_playi
Flightless Cormorant by Mike Weston: https://www.flickr.com/photos/mikeweston/331214460
All other images via Wikimedia Commons, licensed under Creative Commons by 4.0: https://creativecommons.org/licenses/by/4.0/
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Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions.

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Gravity Over Distance 0:44
Tidal Force Parameters 1:35
Battle of the Bulges 2:55
Tidal Lock 6:17

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PHOTO/VIDEO CREDITS
Photo & video credit: "NASA's Scientific Visualization Studio"
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=4 Photo credit: "NASA's Scientific Visualization Studio"
https://www.flickr.com/photos/....gsfc/8556665115/in/p
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1
The Hopewell Rocks - https://www.youtube.com/watch?v=EnDJ6_XpGfo