El director del Grupo ACI, Alejandro Bermúdez, nos ofrece a diario reflexiones en audio y vídeo sobre temas de actualidad en los que los católicos necesitamos tener una posición clara e informada. Compártelo con tus amigos, tu comunidad o en tu medio de comunicación católico.

이마에스트리 제13회 정기연주회
남자 성악가로 살아가기-시즌2
The 13th IMAESTRI Voice Orchestra Concert
2018년 6월 19일(화) 오후 8시 예술의전당 콘서트홀

▶ 지 휘 : 양재무
▶ 피아노 : 김기경
▶ 조이 오브 스트링스 현악악상블
▶ 카로스 타악기 앙상블

한국 초연인 Karl Jenkins 작곡의 Benedictus(축복)는 서정성이 강한 도입부와 포르테시시모의 강력한 반전을 포함한 곡으로 Mass for Peace 평화미사곡 - 무장한 사람(The Armed Man)가운데 12번째 곡으로 미사곡의 형식에 반전(反戰)의 메시지를 담고 있다. 우리가 겪었던 전쟁의 상처와 이 땅에 다시는 없어야 할 전쟁의 아픔을 노래하였다면, 젠킨스의 축복은 이제는 앞으로 세상에서 없어져야 할 전쟁을 음악에 담고 있다. 느리고 아름다운 연주는 서정적이지만 슬프지만은 않다.
조국을 위해 젊은 청춘을 바친 숭고한 영혼의 넋을 거룩한 아름다움으로 담았다. Cello와 남성 성악의 장엄함을 통해 남성적인 서정성과 강인함 그리고 역동성을 느낄 수 있는 작품이다.

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2CELLOS Luka Sulic and Stjepan Hauser performing their arrangement of Benedictus by Karl Jenkins with the Zagreb Philharmonic Orchestra.

Ivo Lipanovic, conductor

This video appears on their stunning new DVD "Live at Arena Zagreb" - the complete exhilarating concert filmed on 12th of June, 2012

Filmed by MedVid produkcija

Directed by Kristijan Burlovic
Video editing by Stjepan Hauser & Ivan Stifanic

Stained glass is thicker at the bottom - so is it a liquid? Earth's mantle enables plate tectonics, so is it a liquid?
Check out Audible: http://bit.ly/AudibleVe
Sign up for the mailing list: http://www.veritasium.com
Pitch drop experiment: http://www.thetenthwatch.com

Thanks to Meg Rosenburg for scripting and animation, Raquel Nuno for filming and Aaron White for script consultation.

These are the molecular machines inside your body that make cell division possible. Animation by Drew Berry at the Walter and Eliza Hall Institute of Medical Research. http://wehi.tv

Special thanks to Patreon supporters:
Joshua Abenir, Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen

Support Veritasium on Patreon: http://ve42.co/patreon

Every day in an adult human roughly 50-70 billion of your cells die. They may be damaged, stressed, or just plain old - this is normal, in fact it’s called programmed cell death.

To make up for that loss, right now, inside your body, billions of cells are dividing, creating new cells.

And cell division, also called mitosis, requires an army of tiny molecular machines.DNA is a good place to start - the double helix molecule that we always talk about.

This is a scientifically accurate depiction of DNA. If you unwind the two strands you can see that each has a sugar phosphate backbone connected to the sequence of nucleic acid base pairs, known by the letters A,T,G, and C.

Now the strands run in opposite directions, which is important when you go to copy DNA. Copying DNA is one of the first steps in cell division. Here the two strands of DNA are being unwound and separated by the tiny blue molecular machine called helicase.
It literally spins as fast as a jet engine! The strand of DNA on the right has its complimentary strand assembled continuously but the other strand is more complicated because it runs in the opposite direction.
So it must be looped out with its compliment strand assembled in reverse, section by section. At the end of this process you have two identical DNA molecules, each one a few centimeters long but just a couple nanometers wide.

To prevent the DNA from becoming a tangled mess, it is wrapped around proteins called a histones, forming a nucleosome.
These nucleosomes are bundled together into a fiber known as chromatin, which is further looped and coiled to form a chromosome, one of the largest molecular structures in your body.
You can actually see chromosomes under a microscope in dividing cells - only then do they take on their characteristic shape.

The process of dividing the cell takes around an hour in mammals. This footage is from a time lapse. You can see how the chromosomes line up on the equator of the cell. When everything is right they are pulled apart into the two new daughter cells, each one containing an identical copy of DNA.
As simple as it looks, this process is incredibly complicated and requires even more fascinating molecular machines to accomplish it. Let’s look at a single chromosome. One chromosome consists of two sausage-shaped chromatids - containing the identical copies of DNA made earlier. Each chromatid is attached to microtubule fibers, which guide and help align them in the correct position. The microtubules are connected to the chromatid at the kinetochore, here colored red.
The kinetochore consists of hundreds of proteins working together to achieve multiple objectives - it’s one of the most sophisticated molecular mechanisms inside your body. The kinetochore is central to the successful separation of the chromatids. It creates a dynamic connection between the chromosome and the microtubules. For a reason no one’s yet been able to figure out, the microtubules are constantly being built at one end and deconstructed at the other.
While the chromosome is still getting ready, the kinetochore sends out a chemical stop signal to the rest of the cell, shown here by the red molecules, basically saying this chromosome is not yet ready to divide
The kinetochore also mechanically senses tension. When the tension is just right and the position and attachment are correct all the proteins get ready, shown here by turning green.
At this point the stop signal broadcasting system is not switched off. Instead it is literally carried away from the kinetochore down the microtubules by a dynein motor. This is really what it looks like. It has long ‘legs’ so it can avoid obstacles and step over the kinesins, molecular motors walking the other direction.

Studio filming by Raquel Nuno

"Full Moon" est extrait de l'album "Full Moon Story" Cette musique date de l'année 1979, mais dans mon coeur, elle n'a pris aucune ride....

Provided to YouTube by WM UK

Athair Ar Neamh (2009 Remaster) · Enya

The Very Best of Enya

℗ 2009 Warner Music UK Ltd

Mastering Engineer: Arun Chakraverty
Cello, Keyboards, Percussion, Piano, Synthesizer, Violin, Vocals: Enya
Arranger, Engineer, Producer: Nicky Ryan
Mixing Engineer: Nicky Ryan
Engineer: Nicky Ryan
Executive Producer: Rob Dickins
Writer: Enya
Writer: Roma Ryan

Auto-generated by YouTube.

I learned this song from attending Novenas with my lovely Hispanic community. Novenas are beautiful traditional gatherings during the first days of December in which the rosary is prayed, and in the Latino tradition, a lot of delicious food is shared. :) I find this song very calming and moving, and I hope you enjoy it as much as I do.

Lyrics // Letras

Madre óyeme, mi plegaria es un grito en la noche
Madre guíame en la noche de mi juventud
Madre sálvame, mil peligros acechan mi vida
Madre lléname, de esperanza, de amor y de fe.
Madre guíame, en las sombras no encuentro el camino
Madre llévame, que a tu lado feliz estaré

La la la la la la la la…

Madre una flor, una flor con espinas que es bella
Madre un amor, un amor que ha empezado a nacer
Madre sonreír, sonreír aunque llore en el alma
Madre construir, caminar aunque vuelva a caer.
Madre solo soy el anhelo y la carne que lucha
Madre tuyo soy, en tus manos me vengo a poner

Compliant mechanisms have lots of advantages over traditional devices. SimpliSafe is awesome security. It's really effective, easy to use, and the price is great. Check out SimpliSafe here: https://simplisafe.com/veritasium

I visited the Compliant Mechanisms Research group at Brigham Young University and spoke to Professor Larry Howell:
https://www.compliantmechanisms.byu.edu

At the above link, you can download 3D-print files to make some of the objects in the video, plus learn more about compliant mechanisms.

What I learned about compliant mechanisms I summarize in the 8 P's of compliant mechanisms:

1. Part count (reduced by having flexible parts instead of springs, hinges)
2. Productions processes (many, new, different enabled by compliant designs)
3. Price (reduced by fewer parts and different production processes)
4. Precise Motion (no backlash, less wear, friction)
5. Performance (no outgassing, doesn't require lubricant)
6. Proportions (reduced through different production processes)
7. Portability (lightweight due to simpler, reduced part count designs)
8. Predictability (devices are reliable over a long period of time)

Special thanks to Patreon supporters:
Donal Botkin, James M Nicholson, Michael Krugman, Nathan Hansen, Ron Neal, Stan Presolski, Terrance Shepherd

Animation by Alan Chamberlain

Remarkably little is known about great white sharks, but they are similar to humans in a lot of ways - they give birth to live young, maintain a higher body temperature than their surroundings and they are apex predators. There are also many misconceptions about these sharks: people think they don't get cancer and that they reside mainly in shallow waters near beaches. In this video I summarize some of the most interesting things I learned about sharks on my cage diving adventure.

Special thanks to Rodney Fox Shark Expeditions for making this trip possible: http://bit.ly/rodneyfox

Thanks also to Tourism South Australia for facilitating the trip: http://bit.ly/1aq9MgV

Chris Cassella or C² as he is known after this trip was a shark spotter extraordinaire. He also took some of the best shark footage in this video. It was his idea to go on this expedition, which was definitely a once in a lifetime experience, so I am in his debt. Chris, I look forward to going on more great adventures with you. Check out Chris's facebook page ScienceAlert http://on.fb.me/18nhyLp

Chaos theory means deterministic systems can be unpredictable. Thanks to LastPass for sponsoring this video. Click here to start using LastPass: https://ve42.co/VeLP
Animations by Prof. Robert Ghrist: https://ve42.co/Ghrist

Want to know more about chaos theory and non-linear dynamical systems? Check out: https://ve42.co/chaos-math

Butterfly footage courtesy of Phil Torres and The Jungle Diaries: https://ve42.co/monarch
Solar system, 3-body and printout animations by Jonny Hyman
Some animations made with Universe Sandbox: https://universesandbox.com/
Special thanks to Prof. Mason Porter at UCLA who I interviewed for this video.

I have long wanted to make a video about chaos, ever since reading James Gleick's fantastic book, Chaos. I hope this video gives an idea of phase space - a picture of dynamical systems in which each point completely represents the state of the system. For a pendulum, phase space is only 2-dimensional and you can get orbits (in the case of an undamped pendulum) or an inward spiral (in the case of a pendulum with friction). For the Lorenz equations we need three dimensions to show the phase space. The attractor you find for these equations is said to be strange and chaotic because there is no loop, only infinite curves that never intersect. This explains why the motion is so unpredictable - two different initial conditions that are very close together can end up arbitrarily far apart.

Music from https://epidemicsound.com "The Longest Rest" "A Sound Foundation" "Seaweed"

We also made a video about laser cooling! http://bit.ly/PhysGirl
Check out Audible: http://bit.ly/AudibleVe
Check out Beyond Slow Motion: http://bit.ly/VeBeyondSlowMo
More on this topic: http://wke.lt/w/s/ef3eV

Special thanks to Laser Away in Santa Monica for helping make this happen - your staff was awesome! http://bit.ly/VeLaserAway

Research and filming by Raquel Nuno and Aaron White.

On a mobile device? Click here: http://www.youtube.com/watch?v=X-QFAB0gEtE for the answer
Two 1.5kg masses are released simultaneously from the top of a 10m high wall. One is attached to a chain while the other is free. Which one will hit the ground first?

Direct from America's space program to YouTube, watch NASA TV live streaming here to get the latest from our exploration of the universe and learn how we discover our home planet.

NASA TV airs a variety of regularly scheduled, pre-recorded educational and public relations programming 24 hours a day on its various channels. The network also provides an array of live programming, such as 24-hour coverage of missions, events (spacewalks, media interviews, educational broadcasts), press conferences and rocket launches.

In the United States, NASA Television's Public and Media channels are MPEG-2 digital C-band signals carried by QPSK/DVB-S modulation on satellite AMC-3, transponder 15C, at 87 degrees west longitude. Downlink frequency is 4000 MHz, horizontal polarization, with a data rate of 38.86 Mhz, symbol rate of 28.1115 Ms/s, and ¾ FEC. A Digital Video Broadcast (DVB) compliant Integrated Receiver Decoder (IRD) is needed for reception.

Samuel Hernández ha llegado a muchos lugares con la alabanza Levanto mis manos.
Ha sido muchas las visitas que ha realizado con su guitarra en mano, llegando a donde realmente esta la necesidad. Este es el verdadeero evangelio, llevar vida, alegría, restauración a los mas que lo necesitan, a Dios sea la Gloria. En esta ocasión la actriz muy conocida en Puerto Rico, Judith Pizarro recibe una Inyección de Fe, Levantó sus manos, recibió fuerzas nuevas, meses después partió con el Señor, no sin antes haberlo aceptado como único y exclusivo Salvador.

Creo que toda persona que habla del mensaje del Evangelio es soldado de Cristo. Les anímo a visitar mi sitio: http://www.blogger.com/profile..../0842037997471047394

00:00 | 01 - Mi vida está llena de ti.
04:22 | 02 - Creyendo en ti.
08:23 | 03 - Un canto de esperanza.
13:41 | 04 - Actualidad.
18:17 | 05 - Gracias quiero darte.
23:10 | 06 - Nada me apartará de ti, Señor.
27:54 | 07 - Tengo vida nueva.
32:04 | 08 - Te alabamos.

Más música cristiana: https://www.youtube.com/FeCristianismo.

D. R. © 2004 Este video ha sido monetizado por el propietario de los derechos de autor, quien recibe los ingresos por concepto de publicidad.

Pues, este es mi primer vídeo y espero que les guste.
Para todos aquellos que con esta canción se identifican.