Tweet Archive 2018 03
RT @elakdawalla: I have another announcement about it…
I got someone to write a Foreword…
It’s Randall Munroe, author of What If? and…
Replying to @3Blue1Brown and @BenHambrecht
Is there a similar visual insight into why
2/1 * 2/3 * 4/3 * 4/5 * 6/5 * 6/7 * 8/7 * … = π/2
(The Wallis product https://en.wikipedia.org/wiki/Wallis_product)
Replying to @tim_hutton
A moon full of stars and astral cars And all the figures I used to see All my lovers were there with me All my past and futures And we all went to heaven in a little row boat There was nothing to fear and nothing to doubt I jumped into the river Black-eyed angels swam with me
Replying to @HumansOfLate
We see a world we once heard of. No such world remains. We experience the natural in the only way left to us. We feel a loss we can’t explain and our heart aches because of it.
Why should we settle for a Nash equilibrium? If we work together we can achieve a Pareto optimum. https://twitter.com/yaneerbaryam/status/970346474860109825
Replying to @panlepan, @CambridgeMaths and @CardColm
Maybe it’s a joke about the glass itself having a reflection. Maybe vampires have a hard time identifying symmetries because they don’t see the reflection.
A nice gif of @apgox’s new discovery in Conway’s Game of Life.
gif source: /u/invisibowl on https://www.reddit.com/r/cellular_automata/comments/82lj8j/an_elementary_knightship_an_obliquelytraveling/
discovery thread: http://www.conwaylife.com/forums/viewtopic.php?t=3303
I spoke to this guy at ECAL. He plans to build an actual self-replicating machine on the moon. It’s ambitious and he’s completely serious.
https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/engineering-a-lunar-photolithoautotroph-to-thrive-on-the-moon-life-or-simulacrum/9DA1EE792C8E999AAF94740B0D5DC80C
Replying to @DJSnM
And then one day it all works out. On the ground they cheer and shout. You find that you’re in space that day. And then there’s nothing in your way.
So let’s go to Mars, and then head out towards the stars.
Because we went to space today. And now there’s nothing in our way.
RT @DJSnM: After weeks and weeks of trying to get the time to record and trying to do it professionally, we decided to do this as a single…
RT @CambStreetScene: Enjoy a stroll around the flooded chalk pits between Romsey and Cherry Hinton @ the East Cambridge Lakes Public Open D…
RT @keiichiban: cube!
RT @keiichiban: more beautiful hand tracking
Replying to @alisonmartin57
Clathrins are a bit like adding defects to a mesh, giving a little bit of local curvature.
Replying to @tim_hutton
There could not be a better way to illustrate Hutton’s Unconformity than by baking a cake.
http://all-geo.org/highlyallochthonous/2011/01/the-baking-of-an-angular-unconformity-huttons-unconformicake/
“[I] rejoiced at my good fortune in stumbling upon an object so interesting in the natural history of the earth, and which I had been long looking for in vain.”
Horizontal layers laid down on top of vertically tilted layers implies that the Earth is old.
https://en.wikipedia.org/wiki/Hutton%27s_Unconformity
Replying to @tim_hutton
“reason may sometimes go much further than imagination may venture to follow”
RT @cupcakelogic: borb (bird orb) has something to say
Replying to @pacohope
The modern #escaperoom: You are in a conference room with • a projection system • a speakerphone • guest wifi • a videoconference camera
You can leave whenever you want. Learn to trust your instincts.
A gentle reminder that there is one correct way to write dates.
(Interestingly, under this system there will never* be a pi day, nor ever was one.)
Replying to @evelynjlamb and @ryanqnorth
The value on pi approximation day (22/7) is closer to pi than the value on pi day (3.14).
RT @Awfidius: PhD Internships in Windows Mixed Reality. Are you a machine learning or computer vision PhD student? Do you love (a) mathem…
Replying to @tim_hutton
I shut my eyes to them but I can still see the psychological metaphors even in the dark.
There are at least three different space-filling shapes to be found in the diamond cubic structure: the cube, the triakis truncated tetrahedron, and the rhombic dodecahedron.
https://www.youtube.com/watch?v=ZJJkJDb6N6w
Replying to @tim_hutton
A GIF showing that the Triakis Truncated Tetrahedron is the shape of the Voronoi cell of the carbon atoms in diamond.
(BTW, my daughter thinks we should call it the ‘Tetriakon’. What do we think?)
Replying to @tim_hutton
As part of the same journey of understanding, I printed some out, with a base for them to stand on. It is very satisfying to build with them.
STL files here if you want them: https://github.com/timhutton/triakis-truncated-tetrahedra
#translatefromestonian
When machine learning algorithms have improved and we no longer see these kinds of amusing mistakes we will have lost something.
It’s like when computer stopped making noises (floppy disk drives, cassette drives, modems, CRTs degaussing, HDDs seeking).
When I Ctrl-click to open a link in a new tab, why doesn’t that tab get a copy of the history? Without it there’s no record of how I got there.
@firefox @googlechrome @microsoftedge
Replying to @NikBie and @RareLtd
I love that this gif was posted on a subreddit about the fear of deep water.
RT @MichaelPDeacon: The replies. Oh, the replies https://twitter.com/demarionunn/status/975739388138348544
Replying to @MagneticMattt
Milk…. <squints> … can see into … <waves hands> … the FUTURE!
RT @AstroKatie: If I can explain a concept in technical terms to an expert audience, I might convince them I know what I’m talking about. I…
RT @AstroKatie: Love this #sciencegif!
Parallax is how we figure out distance to nearby stars (black dots). As Earth moves around Sun, per…
Replying to @jtmaths
What’s the shape it makes on the inside?
Minimal example of animating the HTML5 canvas from C++ using OpenGL through WebAssembly. Simple working code to get you started.
It’s great that we now have C++ running at native speed on any platform (including mobile), with accelerated 3D rendering.
https://github.com/timhutton/opengl-canvas-wasm
Replying to @jongranskog
#Emscripten supports huge projects, like entire game engines. Some demos: https://github.com/kripken/emscripten/wiki/Porting-Examples-and-Demos
A lot of this excitement happened a few years ago when asm.js came out, compiling C++ to Javascript. Now #WebAssembly is the same thing but compiling C++ to web-friendly binaries.
RT @SyntopiaDK: New blog post on ‘Building 4D Polytopes’. Probably my most ambitious post yet (but not very mobile friendly, I’m afraid). h…
Ferrofluid in a rotating magnetic field.
Source with more: https://www.youtube.com/watch?v=UjWKiYdVy-8 via: https://www.reddit.com/r/woahdude/comments/881wgw/ferrofluid_inside_of_a_rotating_magnetic_field/
Replying to @robinhouston
If we could work out what the forces were then probably, yes. But I suspect it would be hard to get right.
Perhaps the closest so far is the oil-water simulation we have.
Rugs made by hand from aerial photographs.
https://trendland.com/powerful-landscape-rugs-argentinean-artist-alexandra-kehayoglou/
