Monday, April 1, 2019

Petunia 38: Musical-Aphilo (Scott MacLeod) G+ posts




Here's a Steeleye Span DOCUMENTARY - "Steeleye Span - Electric Folk (BBC Four) 1974" ...
https://www.youtube.com/watch?v=Q7RIwvvnNT0 - which is already posted on the Folk_rock_music - http://worlduniversity.wikia.com/wiki/Folk_rock_music - and is a party in a great house as well ...
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And out of the Folk Rock tradition of the 1960s ... June Tabor - WDR Folkfestival, Cologne, Germany, 1990 ...
 https://www.youtube.com/watch?v=YxMJPpZSIuM ... To Ethnomusicology at WUaS ... http://worlduniversity.wikia.com/wiki/Ethnomusicology ...
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Pentangle - Let No Man Steal Your Thyme (1968) -
 https://www.youtube.com/watch?v=RwT0COKXFMM - liking these Rolk Rock creations from the 60s as well ... To Folk Rock World University ... http://worlduniversity.wikia.com/wiki/Folk_rock_music ...?
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Och Aye ... this Steeleye Span animation to "Alison Gross" ...

https://www.youtube.com/watch?v=sw7cVK8Ve9k

... is a bit trippy too :)

(Moving toward a musical focus on this profile ... )
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Great Dead here ... getting a little trippy too ... https://www.youtube.com/watch?v=zq8sp6WF3bQ ... and on the computer screen with youtube as well ... Grateful to the Dead here ... http://worlduniversity.wikia.com/wiki/Grateful_Dead ... hope we can all jam - http://worlduniversity.wikia.com/wiki/Musical_Jamming - together in real real time from here, Dead-Wise eventually ... 
Originally shared by Scott MacLeod (Helianth)
Great Dead here ... getting a little trip too ... https://www.youtube.com/watch?v=zq8sp6WF3bQ ... and on the computer screen with youtube as well ... Grateful to the Dead here ... http://worlduniversity.wikia.com/wiki/Grateful_Dead ... hope we can all jam - http://worlduniversity.wikia.com/wiki/Musical_Jamming - together in real real time from here, Dead-Wise eventually ... 
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Kathryn Tickell "Lads of Alnwick" https://www.youtube.com/watch?v=HiuMwskhsGk ... you'll find this with other favorite music by her here (hear) at the Northumbrian small pipes' wiki subject - http://worlduniversity.wikia.com/wiki/Northumbrian_smallpipes -  at World University and School (which is planning a wee music school - http://worlduniversity.wikia.com/wiki/World_University_Music_School -ALL instruments in ALL 7,929 languages, each a wiki subject page to begin).
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Visionary achievers
Originally shared by Richard Branson - 15 comments
Heroes get remembered, but legends never die. Happy birthday Madiba http://virg.in/foa
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Great Dead here ... getting a little trippy too ... https://www.youtube.com/watch?v=zq8sp6WF3bQ ... and on the computer screen with youtube as well ... Grateful to the Dead here ... http://worlduniversity.wikia.com/wiki/Grateful_Dead ... hope we can all jam - http://worlduniversity.wikia.com/wiki/Musical_Jamming - together in real real time from here, and Dead-Wise eventually ...
Originally shared by Scott MacLeod (Helianth)
Great Dead here ... getting a little trip too ... https://www.youtube.com/watch?v=zq8sp6WF3bQ ... and on the computer screen with youtube as well ... Grateful to the Dead here ... http://worlduniversity.wikia.com/wiki/Grateful_Dead ... hope we can all jam - http://worlduniversity.wikia.com/wiki/Musical_Jamming - together in real real time from here, Dead-Wise eventually ... 
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In Chile World University for example ... http://worlduniversity.wikia.com/wiki/Chile

To Chile World University with only a little MIT OCW in Spanish or "WIKI" subject http://t.co/6oER3AVVPu? MANY LANGS https://t.co/HOCDlDsYL9
Originally shared by Duke University
Stunning images of bridges. Bike tours of major cities. #DukeIsEverywhere has featured student and alumni blog posts, photos and videos from over two dozen countries. Read more on the Duke Global site: http://ht.ly/PK59e.
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http://worlduniversityandschool.org/
Originally shared by Scott MacLeod (Helianth)
World University is online ....
http://worlduniversityandschool.org/ ... planned in all 7929 languages, accrediting on CC MIT OCW in 7 languages and CC Yale OYC for example ...

and here's a view from its physical location at sunset.
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Question about World University - http://worlduniversityandschool.org/? Just added a new "QUESTION" category ... please ask or check out the FAQs at WUaS itself http://worlduniversity.wikia.com/wiki/Frequently_Asked_Questions ... Planned in many languages. What's your question? :)

Pew Research Center focusing on the World Wide Web is a boon ... To http://worlduniversity.wikia.com/wiki/Internet_Studies ? Planned in many languages ...
Originally shared by Lee Rainie
2014 is the 25th anniversary of the World Wide Web and we at the Pew Research Center marked the milestone with 11 reports looking at the rise of the internet/web, the current state of adoption of digital tools by Americans, and the future of technology.

The roster of reports around #web25  includes commentary from hundreds of experts about:

The overall state of digital life in 2025
How the Internet of Things will thrive
The main threats to online activities
The economic impact of robotics and artificial intelligence
Killer apps that will emerge as communities move to gigabit connectivity
The likelihood of major cyber attacks affecting nations, corporations and individuals
The future of #privacy  

These future-oriented reports were done with Elon University's Imagining the Internet Center, which has compiled thousands of predictions about the future of the internet at: 

http://www.elon.edu/e-web/imagining/default.xhtml 
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To Additive_manufacturing_or_3D_printing http://worlduniversity.wikia.com/wiki/Additive_manufacturing_or_3D_printing? Planned for many languages!
Originally shared by Harvard University - 4 comments
Using a 3-D printer, Harvard researchers create an autonomous soft machine: http://hvrd.me/PB7yC 

#robot   #robotics   #science   #gif  
Animated Photo
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Inspiring office hours and conversation about using the Scratch Programming milieu ... To http://worlduniversity.wikia.com/wiki/Educational_Software? Planned in many languages ... thank you, Harvard's Karen Brennan and all co-facilitators ...!
Originally shared by Karen Brennan - 2 comments
Karen Brennan was in a video call with 6 people. #hangoutsonairMichelle Chung, Laura Johnson, Kelly Whitney, Mary Jo Madda, Ingrid Gustafson, and Eric Schilling
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Liking the 
Medieval Belarusian folk music influences here ... To Ethnomusicology or Folk Rock at World University and School ... http://worlduniversity.wikia.com/wiki/Ethnomusicology ...
Originally shared by Jennifer Ouellette - 2 comments
With Medieval Instruments, Band Performs Classic Songs by Deep Purple, Red Hot Chili Peppers, Metallica & The Beatles http://www.openculture.com/2015/07/with-medieval-instruments-band-performs-classic-songs-by-deep-purple-red-hot-chili-peppers-metallica-the-beatles.html
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Originally shared by Draxtor Despres
Drax Files Radio addresses #immersivedrax and has raw material from Tom Boellstorff interview for upcoming video !
show #76: tom
show #76: tom
draxfiles.com
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Friendly-informed World University and School seeks high schoolers to apply this autumn 2015 to matriculate online in 2016 (as if going to MIT) - Signup at WUaS's home page -
http://worlduniversityandschool.org/ -
for free CC accrediting Baccalaureate (Bachelor's) degrees -
http://worlduniversity.wikia.com/wiki/The_College_at_World_University_and_School -
and planning to graduate in 2020.
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Friendly-informed World University and School seeks high schoolers to apply this autumn 2015 to matriculate online in 2016 (as if going to MIT) - Signup at WUaS's home page -
http://worlduniversityandschool.org/ -
for free CC accrediting Baccalaureate (Bachelor's) degrees -
http://worlduniversity.wikia.com/wiki/The_College_at_World_University_and_School -
and planning to graduate in 2020.
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To Mathematics at World University - http://worlduniversity.wikia.com/wiki/Mathematics? Planned in many languages ... check out the MIT OCW in 7 languages ... (STEM too - http://worlduniversity.wikia.com/wiki/STEM_Education_-_Science,_Technologies,_Engineering_and_Mathematics)
Originally shared by John Baez - 27 comments
Chaos made simple

This shows a lot of tiny particles moving around.   If you were one of these particles, it would be hard to predict where you'd go.  See why?  It's because each time you approach the crossing, it's hard to tell whether you'll go into the left loop or the right one. 

You can predict which way you'll go: it's not random.  But to predict it, you need to know your position quite accurately.  And each time you go around, it gets worse.  You'd need to know your position extremely accurately to predict which way you go - left or right - after a dozen round trips. 

This effect is called deterministic chaos.  Deterministic chaos happens when something is so sensitive to small changes in conditions that its motion is very hard to predict in practice, even though it's not actually random.

This particular example of deterministic chaos is one of the first and most famous.  It's the Lorenz attractor, invented by Edward Lorenz as a very simplified model of the weather in 1963.

The equations for the Lorentz attractor are not very complicated if you know calculus.  They say how the x, y and z coordinates of a point change with time:

dx/dt = 10(x-y)
dy/dt = x(28-z) - y
dz/dt = xy - 8z/3

You are not supposed to be able to look at these equations and say "Ah yes!  I see why these give chaos!"   Don't worry: if you get nothing out of these equations, it doesn't mean you're "not a math person"  - just as not being able to easily paint the Mona Lisa doesn't mean you're "not an art person".  Lorenz had to solve them using a computer to discover chaos.  I personally have no intuition as to why they work... though I could get such intuition if I spent a week reading about it.

The weird numbers here are adjustable, but these choices are the ones Lorenz originally used.  I don't know what choices David Szakaly used in his animation.  Can you find out?

If you imagine a tiny drop of water flowing around as shown in this picture, each time it goes around it will get stretched in one direction.  It will get squashed in another direction, and be neither squashed nor stretched in a third direction. 

The stretching is what causes the unpredictability: small changes in the initial position will get amplified.  I believe the squashing is what keeps the two loops in this picture quite flat.  Particles moving around these loops are strongly attracted to move along a flat 'conveyor belt'.  That's why it's called the Lorentz attractor.

With the particular equations I wrote down, the drop will get stretched in one direction by a factor of about 2.47... but squashed in another direction by a factor of about 2 million!    At least that's what this physicist at the University of Wisconsin says:

J. C. Sprott, Lyapunov exponent and dimension of the Lorenz attractor
http://sprott.physics.wisc.edu/chaos/lorenzle.htm

He has software for calculating these numbers - or more precisely their logarithms, which are called Lyapunov exponents.  He gets 0.906, 0, and -14.572 for the Lyapunov exponents.

For more nice animations of the Lorentz attractor, see:

http://visualizingmath.tumblr.com/post/121710431091/a-sample-solution-in-the-lorenz-attractor-when

David Szakaly has a blog called dvdp full of astounding images:

http://dvdp.tumblr.com/

and presumably this one of the Lorenz attractor is buried in there somewhere, though I'm feeling too lazy to do an image search and find it.
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Thank you, +marilyn stocker​ for making my kilt new! Very nice to visit as well! The basting here in the pleats is a work of art in itself!
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