### Christopher Peisert

Shared publicly -Dinesh D'Souza poignantly illustrates the morality implicit in Obamacare:

No ObamaCare

No ObamaCare

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Start a hangout

Christopher Peisert

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Dinesh D'Souza poignantly illustrates the morality implicit in Obamacare:

No ObamaCare

No ObamaCare

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“The happiest I’ve ever been, the most gratification I’ve ever gotten from a job, are always instances where two things are true: I’m working with people that I love, and I’m solving a problem that I’m personally passionate about.”

--Tom Conrad, CTO Pandora

--Tom Conrad, CTO Pandora

Don't miss the latest Foundation interview by +Kevin Rose: +Tom Conrad of +Pandora on reinventing radio – http://goo.gl/toubU

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+Vladimir Bulatov does it again! At each moment, this movie shows you a tiling of the hyperbolic plane by pentagons, four meeting at each corner, mapped onto a disc with four slits cut out. This mapping is **conformal**, meaning that it preserves angles. As time passes, the hyperbolic plane rotates and we see this crazy movie.

For a more detailed explanation, with tons of great pictures, go here: http://bulatov.org/math/1001/

Here's the short version: there's a way to measure distances on a disk that makes it into a model of the hyperbolic plane. There are actually a number of ways, but Bulatov - and Escher - use the**Poincare disk model**, because in this model straight lines look like portions of circles: very pretty. Then, according to the **Riemann mapping theorem** you can map this disk in a conformal way onto a disk with 4 slits cut out. The hard part is finding a formula for how to do it, and then implementing it on a computer.

For more details, try these picture-packed pages:

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

http://en.wikipedia.org/wiki/Poincar%C3%A9_disk_model

and this more advanced one:

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

#sciencesunday

For a more detailed explanation, with tons of great pictures, go here: http://bulatov.org/math/1001/

Here's the short version: there's a way to measure distances on a disk that makes it into a model of the hyperbolic plane. There are actually a number of ways, but Bulatov - and Escher - use the

For more details, try these picture-packed pages:

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

http://en.wikipedia.org/wiki/Poincar%C3%A9_disk_model

and this more advanced one:

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

#sciencesunday

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As you probably already noticed, one of the core AngularJS values is simplicity. Simple is awesome, but simple and fast is doubly awesome and that's why we also value speed and performance. Since earl...

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Entertaining talk from Google I/O 2012 showcasing awesome new HTML5 features: "The Web Can Do That?!"

https://developers.google.com/events/io/sessions/gooio2012/204/

https://developers.google.com/events/io/sessions/gooio2012/204/

"The Web Can Do That?!" is up

slides: htmlfivecan.com

source/demos: https://github.com/ebidel/html5can

slides: htmlfivecan.com

source/demos: https://github.com/ebidel/html5can

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Nice overview of work being done on JavaScript engines to improve performance.

Keynote slides from @dmandelin highly regarded "Know Your Engines - How to make your JavaScript Fast"

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In his circles

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Great article about the Khan Academy from Forbes:

http://www.forbes.com/sites/michaelnoer/2012/11/02/one-man-one-computer-10-million-students-how-khan-academy-is-reinventing-education/?sf7073306=1

http://www.forbes.com/sites/michaelnoer/2012/11/02/one-man-one-computer-10-million-students-how-khan-academy-is-reinventing-education/?sf7073306=1

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Excellent overview of Scala from its creator Martin Ordersky.

FOSDEM 2009 Scala - A Scalable Language

FOSDEM 2009 Scala - A Scalable Language

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Want to create an online course? Check out Course Builder from Google!

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Beautiful short film of Gêrome Pouvreau making the first ascent of Ganesh (5.14a/8B+) in Badami, India.

http://youtu.be/Y3UDkcH5KzI

http://youtu.be/Y3UDkcH5KzI

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Experience the beauty of the world through spectacular time lapses.

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A glimpse at the future of web development with the Dart Editor.

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In his circles

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Computer-programming, cappuccino-imbibing, mountaineer excited about the coming technological singularity.

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