2010/10/24
会場：愛・地球博記念公園大芝生広場。
ステージプログラムのフィナーレとして実施した喜多郎「千人太鼓」。愛知県出身の世界的アーティストである喜多郎氏の指揮により、デニス・バンクス、太鼓奏者と千人の一般参加者が一体となって太鼓を打ち鳴らし、「地球のリズム、宇宙からのメッセージ」を表現。

Kitaro and Dennis Banks Performed with 1000 Drummers in Nagoya, Japan on October 24th.

The 10th Conference of the Parties to the Convention on Biological Diversity (COP 10) was held in Nagoya, Aichi Prefecture in October 2010.

The COP 10 Festival: Biodiversity EXPO in Moricoro Park, provides various activities to encourage people to experience and realize the importance of biodiversity.

Kitaro will continue to perform "1000 drummer " event in the future.


Official Artist Page
http://www.domomusicgroup.com/kitaro/

オフィシャルウェブサイト
http://www.diaa.net/kitaro/index.php

Kitaro - The Field - Live in Izumo Taisha (Izumo Grand Shrine) on 8/10/1990

http://itunes.apple.com/us/art....ist/kitaro/id2382005

http://www.domocart.com/domo-store/index.php


Song: The Field

Theme From Silk Road
Caravansary
Cosmic Love
The Field
Hajimari
Sozo
Koi
Orochi
Nageki
Matsuri
Reimei
Nageki


Drums: Casey Scheuerell
Percussion: Ken Park
Keyboards: Brian Becvar
Violin: Charlie Bisharat
Keyboards: Kit Walker
Guitar: Barry Coates
Bass: Steve Bailey

Official Website
http://domomusicgroup.com/kitaro/

日本語オフィシャルウェブサイト
http://www.diaa.net/kitaro/index.php

The Vikings suffered many hardships living in the north of Europe: long, cold winters and importantly a lack of sunlight. Luckily, they had cod.
Check out Vitamania: https://ve42.co/cod

When making a video about vitamins I thought the story would mainly be about supplement pills, whether we should or shouldn't take them and how they're made. But what I found out is vitamins have a remarkable story that affects many more aspects of our lives. For example the Vikings needed a source of vitamin D to last the dark winter months and for their children to develop strong, healthy bones, avoiding rickets.

Special thanks to Patreon supporters:
a human, Albert Jachowicz-Brzeziński, Alfred Wallace, Arjun Chakroborty, Brent Stewart, Chris Vargas, Chuck Lauer Vose, Clip Tree, Coale Shifflett, Colin Bellmore, DALE HORNE, Eric Velazquez, Fedor Indutny, Fran Rodriguez, James Wong, Jasper Xin, Joar Wandborg, Johnny, Jorge Angel Sandoval, June Kang, Kevin Beavers, Kishore Tipirneni, Levan Ferr, Listen Money Matters, Manuel Zürcher, Mark Bevilacqua, Mathias Göransson, Michael Bradley Wirz, Michael Krugman, Mohammed Al Sahaf, Nicholas Hastings, OddJosh, Patrick Čalija, Peter Tajti, Philipp Volgger, Roberto Rezende, Robin DeBank, Ron Neal, Stan Presolski, Swante Scholz, Tiago Bruno, Tige Thorman, Warrior8252

This video was filmed by Harry Panagiotidis
Researched and written by Derek Muller and Jonny Hyman
Editing, animation and music by Jonny Hyman
Cod liver oil animation by Iván Tello
Vitamania was written, directed and produced by Sonya Pemberton

El Papa Francisco ya está en Panamá para participar de la Jornada Mundial de la Juventud (JMJ) que se realizará hasta el domingo 27 de enero.

Encuentra la nota completa:
http://ow.ly/eO0J30nqx3B

Many technologies have promised to revolutionize education, but so far none has. With that in mind, what could revolutionize education?
These ideas have been percolating since I wrote my PhD in physics education: http://www.physics.usyd.edu.au..../super/theses/PhD(Mu
I have also discussed this topic with CGP Grey, whose view of the future of education differs significantly from mine: https://www.youtube.com/watch?v=7vsCAM17O-M

I think it is instructive that each new technology has appeared to be so transformative. You can imagine, for example, that motion pictures must have seemed like a revolutionary learning technology. After all they did revolutionize entertainment, yet failed to make significant inroads into the classroom. TV and video seem like a cheaper, scaled back film, but they too failed to live up to expectations. Now there is a glut of information and video on the internet so should we expect it to revolutionize education?

My view is that it won't, for two reasons: 1. Technology is not inherently superior, animations over static graphics, videoed presentations over live lectures etc. and 2. Learning is inherently a social activity, motivated and encouraged by interactions with others.

Filmed and edited by Pierce Cook

Supported by Screen Australia's Skip Ahead program.

Music By Kevin MacLeod, www.incompetech.com "The Builder" and by Amarante Music: http://www.amarantemusic.com

In space, metals can weld together without heat or melting.
Check out Audible: http://bit.ly/AudibleVe
Support Veritasium on Patreon: http://bit.ly/VePatreon

Written by Joh Howes and Derek Muller

Yes, it's pronounced Gemini (ee not eye) because that's the way everyone pronounced this mission.

Thanks to Patreon supporters:
Bryan Baker, Donal Botkin, Tony Fadell, Saeed Alghamdi

References:
Gemini IV transcripts: http://www.jsc.nasa.gov/histor....y/mission_trans/gemi

Gemini IV recordings:
https://archive.org/details/Gemini4 (relevant clip is 1297 at about 2:00)

ESA cold welding recommendations:
esmat.esa.int/Publications/Published_papers/STM-279.pdf

Cold welding gold nanowire:
http://www.nature.com/nnano/jo....urnal/v5/n3/full/nna

Music by Kevin MacLeod "Intrepid" http://www.incompetech.com

Buy this album: http://www.domomusicgroup.com/....kitaro/albums/thinki
Buy at iTunes: http://itunes.apple.com/us/alb....um/fiesta/id15582186

Artist: Kitaro
Song: Estrella
Album: Thinking of You (43rd Grammy Award Winning album)

43rd GRAMMY WINNING ALBUM (Best New Age Album)

"Thinking of You" is a resplendent expression of the beauty unearthed in nature portrayed musically as only Kitaro can.
Woven within a musical tapestry of song, Kitaro brings you ten astounding compositions rendering light to the environment of which many take for granted. As Kitaro notes, "Living close to this wonderful nature is the discovery of the joy of life everyday".
This Grammy Award winning release has garnered the accolades of die-hard and newcomers alike. As Kitaro remarks, "the 'You' in the titles signifies people close to me, those near and those far away from me. I tried to speak to each one of them through this musical expression."

Song List

01. Estrella
02. Mercury
03. Cosmic Wave
04. Harmony of the Forest
05. Fiesta
06. Thinking of You
07. Spirit of Water
08. Stream
09. Space II
10. Del Mar

Kitaro Official Artist Page
http://www.domomusicgroup.com/kitaro/

喜多郎オフィシャルウェブサイトhttp://www.diaa.net/kitaro/index.php

Artist: Kitaro
Song: Solar System Trapeze
Album: Cirque Ingenieux

Kitaro Official Artist Page
http://www.domomusicgroup.com/kitaro/

iTunes
http://itunes.apple.com/us/alb....um/solar-system-trap

MP3
http://www.payloadz.com/go?id=1122345

CD
http://www.domocart.com/domo-store/index.php?main_page=product_info&cPath=2_10&products_id=6

Song List

01. Cirque Ingenieux
02. Sarah's World
03. Solar System Trapeze
04. The Tailor
05. Costume Shop
06. Wall of Masks
07. Contortionists
08. Winter Waltz
09. The Wizard
10. Galina
11. Underworld
a. Parade Of Riches
b. Court Performers
c. Palace Dance
12. Strength
13. The Escape
14. The Bottom Of The Sky
15. Double Lira/Finale

Panem finds power in the radiance of the sun, and the water which rains down upon us! District 5’s Chief Energy Researcher Derek Muller takes CapitolTV on a tour of our nation's cutting edge renewable technologies, and demonstrates one of the largest ‘Kelvin’s Thunderstorm’ experiments ever built to date… all for a brighter and more efficient Panem.

Sanctioned by the Capitol Ministry of Information, DISTRICT VOICES was made with friends from Google - http://artcopycode.com/campaign/lionsgate

For more of Panem’s finest programming, and to register for updates, visit http://CapitolTV.pn
#CapitolTV - #DistrictVoices

The Hunger Games: Mockingjay Part 1 – In theaters November 21
http://TheHungerGamesExplorer.com
#Mockingjay

This is the first Veritasium science video. It addresses one of the most fundamental concepts in science: the idea that all things are made of atoms, tiny particles that are in perpetual motion. They attract each other when a little distance apart and repel when squeezed together.

A forest is like a meadow on useless stilts.
Most amazing thing about trees: http://bit.ly/TFilQ8
Meetup in Stockholm Sunday, Apr 6 Cafe String

We often imagine that unregulated competition produces optimal outcomes, behaviours, efficiencies, but trees and baggage carousels are two examples where the stable solution is worse for everyone than another strategy. This I find surprising and interesting - that evolution doesn't come to the best solution, it comes to the most stable one.

The Forest of Friendship was a concept I first came across in Richard Dawkin's book "The Greatest Show on Earth." One point I'd like to clarify is that being taller comes with a cost - having a longer trunk requires costly expenditure of energy. However, in a forest of uniformly short trees, being a little taller conveys an advantage. That is until all the other trees catch up, at which time the extra height no longer provides a benefit. So over time as the whole forest rises up the conditions are getting worse for each tree, but they are powerless to stop the evolutionary arms race.

Huge thank you to Brady Haran for filming (and summarizing the main points at the end of the film). He is the amazing creator of:
Numberphile: http://youtube.com/numberphile
Sixty Symbols http://youtube.com/sixtysymbols
Periodic Videos http://youtube.com/periodicvideos
And many more...

The atmosphere applies a pressure of about 100 000 N to every square metre on Earth's surface. We take this pressure for granted because we have the same amount of pressure pushing out. But what happens when the pressure of the atmosphere is applied to an object with no outward pressure? It implodes. In spectacular fashion.

Buy the DVD - The Kitaro Quintessential: http://www.domomusicgroup.com/....kitaro/albums/quinte
Buy at iTunes: http://ax.search.itunes.apple.com/WebObjects/MZSearch.woa/wa/search?entity=album&media=all&page=1&restrict=true&startIndex=0&term=kitaro?at=11lMDe

Kitaro Official Artist Page
http://www.domomusicgroup.com/kitaro/

喜多郎オフィシャルウェブサイト
http://www.diaa.net/kitaro/index.php


Revolutionary composer Kitaro is renowned for his ability to embody the spirituality of nature and humanity through his music, often using non-traditional instruments and extremely theatrical performance styles.  As a winner of Best New Age Album at the 43rd Annual Grammy Awards (for "Thinking of You"), Kitaro continues to inspire and create music that captures the vital, earthy, as well as ethereal aspects of existence.  Pioneer Entertainment is proud to present Best of Kitaro - the culmination of his most celebrated and bewitching performances: Kojiki: A Story in Concert, An Enchanted Evening, Light of the Spirit, and Tamayura.

Song List

01.  Opening Credits
02.  Kokoro
03.  Silk Road
04.  Magma
05.  Matsuri
06.  The Field
07.  Heaven & Earth
08.  Koi
09. Caravansary
10. Fire
11. Mercury
12. Cosmic Love
13. Dance Of The Sarasvati
14. End Credits

Approximate Running Time: 123 Minutes

Light is so common that we rarely think about what it really is. But just over two hundred years ago, a groundbreaking experiment answered the question that had occupied physicists for centuries. Is light made up of waves or particles?

The experiment was conducted by Thomas Young and is known as Young's Double Slit Experiment. This famous experiment is actually a simplification of a series of experiments on light conducted by Young. In a completely darkened room, Young allowed a thin beam of sunlight to pass through an aperture on his window and onto two narrow, closely spaced openings (the double slit). This sunlight then cast a shadow onto the wall behind the apparatus. Young found that the light diffracted as it passed through the slits, and then interfered with itself, created a series of light and dark spots. Since the sunlight consists of all colours of the rainbow, these colours were also visible in the projected spots. Young concluded that light consist of waves and not particles since only waves were known to diffract and interfere in exactly the manner that light did in his experiment.

The way I have always seen this experiment performed is with a laser and a manufactured double slit but since the experiment was conducted in 1801 I have always thought that it should be possible to recreate the experiment using sunlight and household materials. That is basically what I did here. I will show the interference pattern I observed with my homemade double slit on 2Veritasium but I chose to use a manufactured double slit here to ensure that the pattern was impressive for observers at the beach.

Special thanks to Henry, Brady, and Rupert for their cameos, Glen for filming and Josh for helping create the apparatus. Thanks also to the Royal Society for allowing us to view the original manuscript of Young's lecture and the University of Sydney for lending the double slits.

Music by Kevin Mcleod (incompetech.com) Danse Macabre, Scissors

Aerogels are the world's lightest (least dense) solids. They are also excellent thermal insulators and have been used in numerous Mars missions and the Stardust comet particle-return mission. The focus of this video is silica aerogels, though graphene aerogels are now technically the lightest.

At one point Dr. Steven Jones literally held the Guinness World Record for making the lightest aerogel and therefore lightest solid. If you're interested in learning more about aerogels, let me know in the comments as there is a potential trilogy in the works...

Huge thanks to Dr. Stephen Steiner and the crew at Aerogel Technologies. To find out more or buy your own aerogel sample, check out: http://www.aerogeltechnologies.com/

Thanks to Dr. Steven Jones and Dr. Mihail Petkov at NASA's Jet Propulsion Laboratory

And thanks to FLIR for loaning us the awesome high definition thermal camera. The footage is amazing! https://www.flir.com

Special thanks to Patreon supporters:
Donal Botkin, Michael Krugman, Ron Neal, Stan Presolski, Terrance Shepherd, Penward Rhyme and everyone who provided feedback on an early draft of this video.

Filming by Raquel Nuno
Animations by Maria Raykova
Drawings by Mariel Solsberg

Music From http://epidemicsound.com "Seaweed" "Swagger Stagger"

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram.
Support Veritasium on Patreon: http://bit.ly/VePatreon

A kilogram isn't what it used to be. Literally. The original name for it was the 'grave', proposed in 1793 but it fell victim to the French Revolution like its creator, Lavoisier. So begins the tale of the most unusual SI unit. The kilogram is the only base unit with a prefix in its name, and the only one still defined by a physical artifact, the international prototype kilogram or IPK.

But the problem with this definition has long been apparent. The IPK doesn't seem to maintain its mass compared to 40 similar cylinders minted at the same time. The goal is therefore to eliminate the kilogram's dependence on a physical object. Two main approaches are being considered to achieve this end: the Avogadro Project and the Watt Balance.

The Avogadro project aims to redefine Avogadro's constant (currently defined by the kilogram -- the number of atoms in 12 g of carbon-12) and reverse the relationship so that the kilogram is precisely specified by Avogadro's constant. This method required creating the most perfect sphere on Earth. It is made out of a single crystal of silicon 28 atoms. By carefully measuring the diameter, the volume can be precisely specified. Since the atom spacing of silicon is well known, the number of atoms in a sphere can be accurately calculated. This allows for a very precise determination of Avogadro's constant.

Special thanks to Katie Green, Dr. David Farrant, the CSIRO, and the National Measurment Institute for their help. Thanks also to Nessy Hill for filming and reviewing earlier drafts of this video.

There is debate as to whether this is truly the roundest object ever created. The Gravity Probe-B rotors are also spherical with very low tolerances such that they may in fact be rounder.

Music by Kevin McLeod (incompetech.com) Decision, Danse Macabre, Scissors

Learn how you can help reduce global warming → https://globalwarmingeffect.org
Common misconceptions about climate change.
Check out Audible: http://bit.ly/AudibleVe
References below:

For CO2, sea levels, Arctic sea ice, Antarctic and Greenland land ice:
http://climate.nasa.gov

Satellite data shows that ground-based stations underestimate recent warming: Cowtan and Way, 2014
http://onlinelibrary.wiley.com..../doi/10.1002/qj.2297

For papers published on climate change during the 1970's, see Peterson, 2008
http://ams.confex.com/ams/pdfpapers/131047.pdf

For solar and temperature data see NASA GISS,
PMOD: http://www.acrim.com/tsi%20monitoring.htm
Krivova et al. 2007:
http://www2.mps.mpg.de/project....s/sun-climate/data.h

CO2 ratio of Carbon-13:Carbon-12 decreasing. IPCC AR4:
http://www.ipcc.ch/publication....s_and_data/ar4/wg1/e

CO2 emitted by volcanoes vs by humans: Gerlach, 2011
www.agu.org/pubs/pdf/2011eo240001.pdf Gerlach

Mauna Loa CO2 data: http://www.esrl.noaa.gov/gmd/ccgg/trends/

Rising atmospheric water vapour: Santer, 2007
http://www.pnas.org/cgi/reprint/0702872104v1.pdf

A doubling of CO2 will likely lead to a 3C increase in global temperatures according to many independent pieces of evidence:
Knutti & Hegerl, 2008
http://www.iac.ethz.ch/people/....knuttir/papers/knutt

Great resource on Milankovitch cycles:
http://www.sciencecourseware.o....rg/eec/GlobalWarming

CO2 lags temperature rise in the southern hemisphere but leads the global average temperature rise, Shakun et al. 2012
http://www.nature.com/nature/j....ournal/v484/n7392/ab

Music by Kevin McLeod, http://incompetech.com Songs: Hidden Agenda, Sneaky Snitch, Harlequin

A trip to #Mars involves radiation, muscle and bone loss, intermediate axis theorem and liquids.
Check out Mars on National Geographic, Monday Nov 12 at 9/8c
#sponsored

When I got offered the chance to fly in another #zeroG plane, I jumped at the chance. Do you know how hard it is when you are thrust into low-gravity, like the 37% of Earth's gravity of Mars, and you have to remember what you were going to say in a 30 second window as blood floods your head? It's pretty hard. It would be even harder to actually travel to Mars. It would take about 8 months in microgravity during which time your muscles and bones would weaken substantially, even if you exercise for hours a day like the astronauts on the space station. And your heart is a muscle too so it weakens as well. Before I contemplated these rates of muscle and bone loss, I thought the major challenge with a round trip journey to Mars would be the logistics of spacecraft and having enough fuel to get back. But with the weakening of the human body, it's an open question whether anyone would really want to come back.

Filmed by Steve Boxall

Music from Epidemic Sound: http://epidemicsound.com

Spinning objects have strange instabilities known as The Dzhanibekov Effect or Tennis Racket Theorem - this video offers an intuitive explanation.
Part of this video was sponsored by LastPass, click here to find out more: https://ve42.co/LP

References:
Prof. Terry Tao's Math Overflow Explanation: https://ve42.co/Tao

The Twisting Tennis Racket
Ashbaugh, M.S., Chicone, C.C. & Cushman, R.H. J Dyn Diff Equat (1991) 3: 67. https://doi.org/10.1007/BF01049489

Janibekov’s effect and the laws of mechanics
Petrov, A.G. & Volodin, S.E. Dokl. Phys. (2013) 58: 349. https://doi.org/10.1134/S1028335813080041

Tumbling Asteroids
Prave et al. https://doi.org/10.1016/j.icarus.2004.07.021

The Exact Computation of the Free Rigid Body Motion and Its Use in Splitting Methods
SIAM J. Sci. Comput., 30(4), 2084–2112
E. Celledoni, F. Fassò, N. Säfström, and A. Zanna
https://doi.org/10.1137/070704393

Animations by Iván Tello and Isaac Frame

Special thanks to people who discussed this video with me:
Astronaut Don Pettit
Henry Reich of MinutePhysics
Grant Sanderson of 3blue1brown
Vert Dider (Russian YouTube channel)

Below is a further discussion by Henry Reich that I think helps summarize why axes 1 and 3 are generally stable while axis 2 is not:

In general, you might imagine that because the object can rotate in a bunch of different directions, the components of energy and momentum could be free to change while keeping the total momentum constant.

However, in the case of axis 1, the kinetic energy is the highest possible for a given angular momentum, and in the case of axis 3, the kinetic energy is the lowest possible for a given angular momentum (which can be easily shown from conservation of energy and momentum equations, and is also fairly intuitive from the fact that kinetic energy is proportional to velocity squared, while momentum is proportional to velocity - so in the case of axis 1, the smaller masses will have to be spinning faster for a given momentum, and will thus have more energy, and vice versa for axis 3 where all the masses are spinning: the energy will be lowest). In fact, this is a strict inequality - if the energy is highest possible, there are no other possible combinations of momenta other than L2=L3=0, and vice versa for if the energy is the lowest possible.

Because of this, in the case of axis 1 the energy is so high that there simply aren't any other possible combinations of angular momentum components L1, L2 and L3 - the object would have to lose energy in order to spin differently. And in the case of axis 3, the energy is so low that there likewise is no way for the object to be rotating other than purely around axis 3 - it would have to gain energy. However, there's no such constraint for axis 2, since the energy is somewhere in between the min and max possible. This, together with the centrifugal effects, means that the components of momentum DO change.

Join NASA Psyche Mission Co-Investigator Dr. Tim McCoy as he takes us on a journey from his first geology class to his current role as Curator-in-Charge of the US National Meteorite Collection at the Smithsonian National Museum of Natural History and his role on the Psyche Mission Science Team. Along the way, McCoy highlights the significance of studying a metallic asteroid and what it may be able to tell us about the formation of the solar system and our own planet. It’s the journey of a lifetime, and he didn’t want to miss it.


Psyche is both the name of an asteroid orbiting the Sun between Mars and Jupiter — and the name of a NASA space mission to visit that asteroid, led by Arizona State University.



For more information about NASA's Psyche mission go to:
http://www.nasa.gov/psyche