Inchoate Miscellany

A few nodes on paper to contemplate

Inspired by https://www.dynomighty.com/shop/wealth-of-knowledge-mighty-wallet 

eval

Brain

Time

Generation Chronology

Physics

Spirit

Graph

Desire

Mystery

Global

Economy

Industry

One Liners

Questions

What else?

Links

#toc #lue #factoid

eval

(defun eval. (e a)
 (cond
   ((atom e) (assoc. e a))
   ((atom (car e))
    (cond
      ((eq (car e) 'quote) (cadr e))
      ((eq (car e) 'atom) (atom (eval. (cadr e) a)))
      ((eq (car e) 'eq) (eq (eval. (cadr e) a)
                            (eval. (caddr e) a)))
      ((eq (car e) 'car) (car (eval. (cadr e) a)))
      ((eq (car e) 'cdr) (cdr (eval. (cadr e) a)))
      ((eq (car e) 'cons) (cons (eval. (cadr e) a)
                                (eval. (caddr e) a)))
      ((eq (car e) 'cond) (evcon. (cdr e) a))
      ('t (eval. (cons (assoc. (car e) a)
                       (cdr e))
                 a))))
   ((eq (caar e) 'label)
    (eval. (cons (caddar e) (cdr e))
           (cons (list (cadar e) (car e)) a)))
   ((eq (caar e) 'lambda)
    (eval. (caddar e)
           (append. (pair. (cadar e) (evlis. (cdr e) a))
                    a)))))

http://www.paulgraham.com/rootsoflisp.html 

#eval #lisp #1960s

Brain

“PageRank for neurons is one way to describe the working architecture of the brain. “

George Dyson

http://edge.org/conversation/engineers-39-dreams

#brain #neural #network #nn #how #google #search #dyson #notsure

Time

I knew my grandchild’s great great grandparents.

Generation Chronology

272

337

Constantine

296

373

Athanasius of Alexandria

325

325

Nicea

354

430

Augustine

406

453

Atilla

410

410

Sack of Rome

466

511

Clovis

480

543

Benedict

521

597

Columba

570

632

Muhammad

614

680

Hilda of Whitby

663

663

Synod of Whitby

672

735

Bede

711

711

Muslin Invasion of Spain

742

814

Charlemagne

778

840

Louis I

823

877

Charles II

849

899

Alfred

875

918

William the Pious

921

946

Edmund I

950

1003

Eric the Red

970

1020

Leif Ericson

1022

1066

Harold II

1028

1087

William the Conqueror

1043

1099

El Cid

1066

1066

Hastings

1096

1099

First Crusade

1098

1178

Hildegard of Bingen

1157

1199

Richard the Lionheart

1162

1227

Genghis Khan

1181

1226

St Francis

1186

1241

Ögedei Khan

1189

1192

Third Crusade

1225

1274

Aquinas

1241

1241

Battle of Mohi

1254

1324

Marco Polo

1260

1328

Meister Eckhart

1267

1337

Giotto

1320

1384

John Wycliffe

1343

1400

Geoffrey Chaucer

1394

1460

Henry the Navigator

1398

1468

Johannes Gutenberg

1412

1431

Joan of Arc

1445

1510

Sandro Botticelli

1451

1506

Columbus

1452

1519

Leonardo da Vinci

1473

1543

Copernicus

1480

1521

Magellan

1483

1546

Martin Luther

1491

1547

Henry VIII

1546

1601

Tycho Brahe

1564

1616

Shakespeare

1564

1642

Galileo

1571

1630

Kepler

1574

1635

Champlain

1643

1727

Newton

1664

1729

Newcomen

1683

1683

Battle of Vienna

1685

1750

Bach

1706

1790

Franklin

1736

1819

James Watt

1809

1882

Darwin

1819

1901

Victoria

1822

1884

Mendel

1831

1879

James Clerk Maxwell

1879

1955

Einstein

https://docs.google.com/spreadsheets/d/1fr1srUfN61Fgbs8PZdeFm0oTqmxo5bTWwi0T8vgICCo/edit?usp=sharing 

#time

me centered, overlapping lives, overlapping life spans

Physics

100 watts/pound (helicopter)

https://en.wikipedia.org/wiki/Airfoil#Thin_airfoil_theory 

#magic #question


The theoretical value for  \ C_{l_\alpha}  is 2 \pi .

http://en.wikipedia.org/wiki/Lifting-line_theory#Useful_approximations

http://en.wikipedia.org/wiki/Lift_coefficient

With the mass flow pinned down as ρVS and with the deflection
speed proportional to the product of
α and V, the lift on a wing is
proportional to
αρV2S.

W/S=0.38V2 The Simple Science of Flight revised page 9

W=0.3ρV2S ibid page 5

W= (Cl/2)SρV2

Cl=.6

#flight #aero #physics #force

"When power is Variable, Power controls airspeed."

"When power is fixed, Pitch controls airspeed."

In general, airplanes go where you point them, and go as fast as the power dictates. This is the easiest way to fly, and it works in all airplanes.

http://www.airplanedriver.net/study/physics.htm 

#flight #aero #physics

#surveyor #gnc #pid #how #moon #nasa #1960s

"vernier engine throttle settings were controlled using a proportional-plus-derivative feedback loop closed around the measured vs. desired velocity magnitude as a function of altitude, represented by the [~parabolic] descent contour"

Surveyor Spacecraft Automatic Landing System

Sam W. Thurman

AAS 04-062

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.504.9417&rep=rep1&type=pdf 

#pdf #pdfpdf #gncgnc #pidpid #howhow #november #2015

 "The total force exerted on an 800 by 800 meter solar sail, for example, is about 5 newtons (1.1 lbf) at Earth's distance from the Sun,[2]"

http://en.wikipedia.org/wiki/Solar_sail 

» "A gigawatt (big) coal-burning power plant burns one ton of coal every seven seconds" = ~40 ft^3 http://bit.ly/j9X1cM

https://books.google.com/books?id=0CBXf8TqroAC&lpg=PA1&dq=instant+physicist&pg=PA56&hl=en#v=onepage&q=coal&f=false 

A cruising #747 burns about a gallon of jet fuel each second. http://bit.ly/747-gallon-a-second  #energy (43 KJ/kg)

CF6 61,500 lbf thrust; LM2500 33,600HP 24MW

https://en.wikipedia.org/wiki/General_Electric_CF6

https://en.wikipedia.org/wiki/General_Electric_LM2500

X-15 “It pumped roughly 30 gallons of LOX and ammonia every second into the rocket engine combustion chamber at 600psi”

At the edge of Space - The X-15 Flight Program p40

https://books.google.com/books?id=rJNTAAAAMAAJ&focus=searchwithinvolume&q=gallons 

http://aeromodelbasic.blogspot.com/2012/05/thrust-distribution-distribution-of.html 


#engine #jet #thrust

"in a 2–MW wind turbine, the weight of the rotor and the tower is typically about 250 tons [...] a kite generator of the same rated power can be obtained using a 500–m2 kite and cables 1000–m long, with a total weight of about 2 tons only."

http://www.dariopiga.com/Papers/Conference/ICREGA2010Kite.pdf

southern yellow pine, ground up and compressed to make a heating product generating some 8,000 BTUs per pound (coal runs 10,000 to 12,000) (23-31 MJ/kg)

annual capacity of 750,000 tons

They determined that the Waycross mill needed to load a 40-car train of identical 100-ton, six-hatch, four-bay covered hoppers every other day. That would put 15 4,000-ton trains -- 60,000 tons worth -- at the port every 30 days.

Trains magazine

Chelyabinsk meteor 40,000[5]–42,900 mph). 13,000–14,000 short tons, heavier than the Eiffel Tower), and measuring about 20 metres in diameter,

https://en.wikipedia.org/wiki/Chelyabinsk_meteor 

 ordinary chondrite. First estimates of its composition indicate about 10% of meteoric iron, as well as olivine and sulfides.

https://en.wikipedia.org/wiki/Chelyabinsk_meteorite 

#solarsystem #asteroid #bolide #comet

Matter shapes the geometry of space and the geometry of space tells matter how to move - Physicist John Wheeler to Margaret Geller

http://storycollider.org/podcast/2014-05-21

8:40

#gravity #relativity #lue #physics

I’m me. I’m here.

#narrative #story #physics #identity #id

“Quantum mechanics predicts what is likely to happen while classical physics records what did happen.”

Freeman Dyson, The Scientist as Rebel p222

“Everything in the future is a wave, everything in the past is a particle.” Quoted by Freeman Dyson in J.D.Barrow, P.C.W.Davies and C.L.Harper (eds), “Science and Ultimate Reality,” Cambridge University Press, Cambridge (2004), p.83 https://sureshemre.wordpress.com/2013/04/27/past-is-a-particle-future-is-a-wave/ #time

Spirit

#lue

Be here now

I was waiting for my ride to come. The sun had just gone down. The night was getting colder. There was noone else around. And I was thinking as I sometimes do, when entertainment fails, of poverty and war and hate and jail.

The reason that I seldom sing a song about important things is importance hardly ever brings a smile. I will try to make you happy while you’re here then you can go outside and act as sad and worried as you like.

Stephen

The bread distributed during mass has a high significance for Christians : it is the body of Christ, their Lord and God. If you do not share our faith in the living presence of Christ in the eucharistic bread, we ask you not to join your neighbours at communion time.

from the bulletin

Notre Dame, Paris

20 September 1997

Willing suspension of disbelief

https://en.wikipedia.org/wiki/Suspension_of_disbelief 

Sambingo Samba rhythms 1 & 2.jpg

#samba  #rhythm #music

“May God have mercy on their souls.”

In other circumstances, the religious reference would make Randy uncomfortable, but here it seems like the only appropriate thing to say. Think what you will about religious people, they always have something to say at times like this. What would an atheist come up with? Yes, the organisms inhabiting that submarine must have lost their higher neural functions over a prolonged period of time and eventually turned into pieces of rotten meat. So what?

Neal Stephenson - Cryptonomicon

#atheist #atheism #religion #death #neal

Say ‘Merry Christmas!’ Jim, and let’s be happy.

https://hypothes.is/a/AVGCJQVY8sFu_DXLVMam 

#christmas #susan #quote

Graph

"The neural network of the worm Caenorhabditis elegans, the power grid of the western United States, and the collaboration graph of film actors are shown to be small-world networks. " Collective dynamics of /`small-world/' networks : Abstract : Nature http://www.nature.com/nature/journal/v393/n6684/abs/393440a0.html 

websites with navigation menus, food chains, electric power grids, metabolite processing networks, networks of brain neurons, voter networks, telephone call graphs, and social influence networks. ...  connected proteins ... transcriptional networks,

https://en.m.wikipedia.org/wiki/Small-world_network 
#network #graph #max #good #math #january #2015 #good #neural #grid #movie #eclectic #short #abstract #random #interesting

P(B|E) = P(B) X P(E|B) / P(E)

http://blogs.scientificamerican.com/cross-check/bayes-s-theorem-what-s-the-big-deal/ 

#stats #statistics #bayes #bayesian #math

Desire

I wanna have God's protection

I wanna be his best friend

I wanna know the cosmic answer of the universe

I wanna be everywhere all the time

Forever one with the great unknown

This is just my teenage prayer

I hope you'll understand

#prayer #humor #chandler

https://mail.google.com/mail/u/0/#search/warren+in%3Afriends/153f8c5c28c6d442 

#warren

Mystery

Christ has died. Christ has risen. Christ will come again.

Global

http://earthenginepartners.appspot.com/science-2013-global-forest?hl=en&llbox=84.6%2C-79%2C-178.2%2C-178.2&t=ROADMAP&layers=6%2Clayer12%2C8%3A100%2C12%3A100%2Clayer5%3A100%2Clayer0 

http://widgetsanddigits.bangordailynews.com/2017/04/03/economy/two-maps-that-show-the-promise-of-maines-forest-industry/ 

http://bit.ly/GlobalForests 

#forest #wood #global #map #tree

#population #global #map

https://medium.com/google-earth/the-global-population-of-the-world-ae8b8b362c99

Economy

.@rushkoff "Our problem is not that we don't have enough stuff -- it's that we don't have enough ways for people to work and prove that they deserve this stuff." http://www.cnn.com/2011/OPINION/09/07/rushkoff.jobs.obsolete/index.html?hpt=hp_c1

#2011 #economy

Industry

Making paper: the four Fs: "Fuel, fiber, freight and folks. Those are the big cost drivers in our business.

http://news.mpbn.net/post/maine-manufacturers-more-natural-gas-needed-lower-energy-costs 

Finance? Water?

Lincoln Paper and Tissue produces 200 tons of tissue a day that is destined to become dyed paper napkins

http://bangordailynews.com/2014/02/10/business/maines-sole-tissue-producer-faces-threats-from-abroad-and-closer-to-home/ 

A cord weighs about 2 tons and makes 1,000-2,000 pounds of paper (depending on the process)

http://www.tappi.org/Bookstore/Public-Outreach/Earth-Answers/How-Much-Paper-Can-Be-Made-From-A-Tree.aspx 

#paper #business #maine #forest #labor #money

David Keith: “Every author’s story is shaped by his or her biases. The remainder of this preface discloses some of mine.”

https://books.google.com/books?id=pTj6AAAAQBAJ&pg=PT13&lpg=PT13&dq=david+keith+climate+bias&source=bl&ots=0Xw6aJ6COa&sig=TuQVboee-pAdUaifeitp2u2uePk&hl=en&sa=X&ved=0CE4Q6AEwB2oVChMI5Km9uObZxwIVhPM-Ch3TzAU3#v=onepage&q=biases&f=false 

http://longnow.org/seminars/02015/feb/17/patient-geoengineering/ 

https://soundcloud.com/longnow/patient-geoengineering ~3:40

“Humanity has caused what in my view is an environmental holocaust in[?} lots of things I love” ~4:00

“I like these things but I understand other people may not”

https://www.youtube.com/watch?v=lsDHfoNmbmg ~2:25

#windturbine

Boston, as the Eagle and the Wild Goose See It

http://www.metmuseum.org/collection/the-collection-online/search/283189

Boston, as the Eagle and the Wild Goose See It

Artist: James Wallace Black (American, 1825–1896)

Date: 1860

#photo #1860 #boston #balloon #flight

Galileo's sketches of the moon from Sidereus Nuncius.

https://en.wikipedia.org/wiki/File:Galileo%27s_sketches_of_the_moon.png 

Beautiful Ruins

They sat quietly, as the day deepened, sunlight from the turret slowly edging up the wall of paintings. Pasquale's eyes felt heavy and he thought that it might be the most intimate thing possible, to fall asleep next to someone in the afternoon.

page 273 of the paperback ISBN 978-0-06-182817-8 that I picked up at the dump.

One Liners

10 Newton ~= 1kg

the full moon viewed from Earth is about 1⁄2 degree, or 30 arc minutes

Most things in the solar system rotate counterclockwise, viewed from the north

31,536,000 seconds in a year

1 m/s ~= 2.25 mph

Fake it 'till you make it

I believe different things in different contexts

Nobody knows the future.

Predicting the future and being right is not knowing the future.

Be here now.

The Cloud of Unknowing

100 to 400 billions stars in the Milky Way

“the blissful union of biscuit and #tea combined”

Questions

What is knowable?

What does it mean to know something?

Who can I trust?

How do you think about the future?

What else?

Geometric proof of Kepler's law

Factoids

Forest & paper industry stats

quotes

Affirmation

Prayer

Earth prayer

3:16

Henk Tennekes expressions

Pellet stats

Emily Dickinson

Neal Stephenson?

Andrew Brown?

Cyclist power

Paper stats

Mystery

Meditation

Monarch Butterflies

Death

Sex

Money

Delft Series

Love

#lue

Dark energy

Dark matter

God of the gaps

Dyson sphere

Bayesian, Kalman, Convolutional Neural Network

Galileo's moon drawings

Hoover Dam

Devil Wears Prada - Cerulean

Surveyor vertical channel control law

Charlotte going to Brady’s birthday party - Faure Pavan

Queen accepting flower by the palace fence - #love

json

list.h in Linux

Bayes - Bayesian

Judy Send in Marigold - tea and biscuit

Picasso - Femme

Bayeux Tapestry - Halley’s Comet

Slow AI - Charlie Stross - Dude, you broke the future! - http://bit.ly/slow-ai-charlie-stross - http://www.antipope.org/charlie/blog-static/2018/01/dude-you-broke-the-future.html 

The Interface Culture - Neal Stephenson - from In the beginning was the command line - http://bit.ly/the-interface-culture-neal-stephenson - https://docs.google.com/document/d/1wWalDIvrcycnigiElv6QCRvd8I6LD0Zn72XK-l1OZ7k/edit 

Links

https://docs.google.com/document/d/1pkqg8-S2Pt5WhpQkNURFl-3PY6sTwRbaDwrGRYRtk4E/pub

http://bit.ly/walletinchoatemiscellany 

https://hypothes.is/stream?q=tag:%27%23walletinchoatemiscellany%27