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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.


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Historians love to debate each other. So some of them pointed out that the first half of this revolution looks a lot different from the second. Let's chat about industry, cars, and Henry Ford.

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For as long as Hank has hosted Crash Course, he's wanted to host a series about the history of science. We've been asking big questions for a really long time and we've all wanted to explore how we've sought to answer those questions through the centuries. Questions like, "What is stuff?" and "Where are we?" have inspired people all over the world to investigate. So lets dive in and see how we, as a people, have tried to figure this stuff out.

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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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When collecting data to make observations about the world it usually just isn't possible to collect ALL THE DATA. So instead of asking every single person about student loan debt for instance we take a sample of the population, and then use the shape of our samples to make inferences about the true underlying distribution our data. It turns out we can learn a lot about how something occurs, even if we don't know the underlying process that causes it. Today, we’ll also introduce the normal (or bell) curve and talk about how we can learn some really useful things from a sample's shape - like if an exam was particularly difficult, how often old faithful erupts, or if there are two types of runners that participate in marathons!

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Mark Brouwer, Justin Zingsheim, 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, 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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Algorithms are the sets of steps necessary to complete computation - they are at the heart of what our devices actually do. And this isn’t a new concept. Since the development of math itself algorithms have been needed to help us complete tasks more efficiently, but today we’re going to take a look a couple modern computing problems like sorting and graph search, and show how we’ve made them more efficient so you can more easily find cheap airfare or map directions to Winterfell... or like a restaurant or something.

Ps. Have you had the chance to play the Grace Hopper game we made in episode 12. Check it out here! http://thoughtcafe.ca/hopper/

CORRECTION:
In the pseudocode for selection sort at 3:09, this line:
swap array items at index and smallest
should be:
swap array items at i and smallest

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Join Jay Smooth next week for the start of our next miniseries: Crash Course Media Literacy!

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http://www.illdoctrine.com


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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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Taizé - Ostani tu (Bleibet hier)
Jacques Berthier / Mt 26, 39. 41-42
Ostani tu i uza me bdij; moli i bdij.
(Bleibet hier und wachet mit mir. Wachet und betet.)

Album: Tvoja riječ je svjetlo
Zbor Taizé Mostar, 2019.
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Portant des rameaux, ils allaient au devant du Seigneur et l'acclamaient:
Hosanna, qu'il soit beni celui qui vient au nom du Seigneur!

They took palm branches and went out to meet the Lord, shouting,
"Hosanna! Blessed is the one who comes in the name of the Lord!" (John 12,13)

Chant for the Palm Sunday.

Sur tous les peuples dans la nuit
Et l’ombre de la mort,
Voici la lumière aujourd’hui
Et la paix du Dieu fort. Alleluia.

Tous nos espoirs sont accomplis,
Un enfant nous est né,
La main de Dieu nous a bénis,
Le Fils nous est donné. Alleluia.

Il est sur terre et dans le ciel
L’admirable à jamais,
Le Dieu puissant, Père éternel,
Le Prince de la paix. Alleluia.

Cessons nos pleurs,
Chantons sans fin sa juste vérité !
Voici que monte le matin
De sa fidélité. Alleluia.

Music: Nikolaus Hermann
Lyrics: Charles Dombre

Il n’est pas de plus grand amour que de donner sa vie pour ceux qu'on aime.
No one can have a greater love than this: to lay down his life for his friends.
Veće ljubavi nitko nema od ove: da tko život svoj položi za svoje prijatelje.
Maiorem hac dilectionem nemo habet, ut animam suam quis ponat pro amicis suis.
Nessuno ha un amore più grande di questo: dare la vita per i propri amici.
No hay amor más grande que dar la vida por los amigos.
人若為自己的朋友捨掉性命，再沒有比這更大的愛情了。

(Jn 15,13)

Réponse, prière du soir / Evening prayer responsory

Text:

Il n’est pas de plus grand amour que de donner sa vie pour ceux qu'on aime.

Oui, comme je vous ai aimés, vous aussi aimez-vous les uns les autres. Il n’est.
A ceci tous vous reconnaîtront pour mes disciples : à cet amour que vous aurez les uns pour les autres. Il n’est.

Brother Alois, Prior of Taizé, speaks during the Europan Meeting in Wroclaw, and announces that the 43rd European Meeting will be held in Torino, from 28 December 2020 to 1 January 2021.
#taizewroclaw

Evening prayer at Palexpo during the European meeting organized by the Taize Community, held in Geneva, 28 December 2007 - 1 January 2008

Alleluia 11, composed by J. Berthier, sung at the Evening prayer at Palexpo, during the European meeting organized by the Taizé Community, in Geneve 28 December 2007 - 1 January 2008.

Je bénirai le Seignur en tout temps, sa louange sans cesse en ma bouche.

Craignez le Seigneur, vous les saints qui le craint ne manque de rien.
Les jeunes fauves sont dénués, affamés; qui cherche Lui ne manque d'aucun bien.
Venez, fils, écoutez-moi, la crainte du Seigneur, je vous l'enseigne.
Où est l'homme qui désire la vie, épris de jours où voir le bonheur?
Garde ta langue du mal, tes lèvres des paroles trompeuses;
Evite le mal, fais le bien, recherche la paix et poursuis-la.
Pour les justes, les yeux du Seigneur, et pour leurs clameurs, ses oreilles;
Ils crient, le Seigneur écoute, de toutes leurs angoisses il les délivre;
Des cœurs brisés le Seigneur est proche, il sauve les esprits abattus.
Yahvé rachète l'âme de ses serviteurs, qui s'abrite en lui n'expiera point.

O fear the Lord, you His saints; For to those who fear Him there is no want.
The young lions do lack and suffer hunger; But they who seek the Lord shall not be in want of any good thing.
Come, you children, listen to me; I will teach you the fear of the Lord.
Who is the man who desires life And loves length of days that he may see good?
Keep your tongue from evil And your lips from speaking deceit.
Depart from evil and do good; Seek peace and pursue it.
The eyes of the Lord are toward the righteous And His ears are open to their cry.
The righteous cry, and the Lord hears And delivers them out of all their troubles.
The Lord is near to the brokenhearted And saves those who are crushed in spirit.
The Lord redeems the soul of His servants, And none of those who take refuge in Him will be condemned.

Viens, Saint-Esprit, du ciel fais jaillir l'éclat de ta splendeur.

Viens, Père des pauvres ;
Viens Esprit généreux ;
Viens, lumière des cœurs.
Du ciel fait jaillir l'éclat de ta splendeur.

Toi le parfait Consolateur,
Merveilleuse fraîcheur,
Dans notre âme, tu fais habiter la paix ;
Dans la peine, tu es le repos ;
Dans l'épreuve, la force ;
Dans la tristesse, la consolation.
Du ciel fais jaillir l'éclat de ta splendeur.

Lumière bienfaisante,
Pénètre l'intimité de nos cœurs,
Car nous te sommes fidèles ;
Sans ta présence, dans l'homme il n'y a rien,
Rien qui soit pur.
Du ciel fais jaillir l'éclat de ta splendeur.

A ceux qui se confient en toi, et te reçoivent dans la foi,
accorde tous tes dons, donne-leur de grandir en toi,
de persévérer dans le salut, donne-leur la joie qui demeure.
Alleluia !

Nous rappelons ta mort, amen.
Nous proclamons ta résurrection, amen.
Veni, Domine Jesu.

Dying yout destroyed our death, amen.
Rising you restored our life, amen.
Veni Domine Jesu.

Deinen Tod verkunden wir,
deing Auferstehung preisen wir.
Komm, Herr Jesus.

Annunciamo la tua morte, Signore,
proclamiamo la tua risurrezione,
nell'attesa della tua venuta.

Recordamos tu muerte.
Proclamamos tu resurrección.
Ven Señor Jesús.

Głosimy Twoją śmierć.
Wyznajemy Twoje zmartwychwstanie.
Przyjdź, Panie Jezu.

Musique/Music: J. Gelineau

Video © Le Jour du Seigneur / http://www.lejourduseigneur.com

Beati voi poveri, perché vostro è il regno di Dio.
Text: Lc 6,20
Music: Communaute de Taizé

Blessed are you who are poor, for the kingdom of God is yours.
Heureux, vous les pauvres, car le Royaume de Dieu est à vous.
Selig, ihr Armen, denn euch gehört das Reich Gottes.
¡Felices ustedes, los pobres, porque el Reino de Dios les pertenece!

Evening prayer, 5 July 2014

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Jubilate, Alleluia · Zbor Taizé - Mostar

Tvoja Riječ Je Svjetlo: Pjesme Iz Taizéa

℗ 2019 Akademski Zbor Pro Musica

Released on: 2019-08-16

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U Bogu Duša Moja · Zbor Taizé - Mostar

Tvoja Riječ Je Svjetlo: Pjesme Iz Taizéa

℗ 2019 Akademski Zbor Pro Musica

Released on: 2019-08-16

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Siromasi, Blago Vam · Zbor Taizé - Mostar

Tvoja Riječ Je Svjetlo: Pjesme Iz Taizéa

℗ 2019 Akademski Zbor Pro Musica

Released on: 2019-08-16

Auto-generated by YouTube.