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by AxbyMag

(gif by 4gifs)

by Amateur Hour Comics

A trio of researchers at Stanford recently published an article in Nature that explains the curious attraction found in droplets of everyday food coloring. The paper is the culmination of hundreds of experiments that began in 2009 when Nate Circa was working on an unrelated experiment as an undergraduate at the University of Wisconsin. Circa noticed that when drops of food coloring were placed on a slide they exhibited bizarre behaviors: identical colors would find matches while different colors would seemingly hunt each other.

Circa soon teamed up with Manu Prakash and Adrien Benusiglio who began working on a series of increasingly refined studies to understand why these single droplets appeared to mimic biological processes, resulting in behaviors that looked like chasing, dancing, or avoidance. One of the keys was the interaction of two different compounds found in food coloring: water and propylene glycol. Tom Abate writing for Stanford explains:

The critical fact was that food coloring is a two-component fluid. In such fluids, two different chemical compounds coexist while retaining separate molecular identities. The droplets in this experiment consisted of two molecular compounds found naturally in food coloring: water and propylene glycol. The researchers discovered how the dynamic interactions of these two molecular components enabled inanimate droplets to mimic some of the behaviors of living cells.

This complex behavior is something called artificial chemotaxis which Manu Prakash explains in layman’s terms in the video above:

The physical properties of these fluids give rise to this immense complexity of behavior. For example, chasing and sensing each other, and very much what we call artificial chemotaxis. Chemotaxis is the idea in biology that one single cell can sense where its enemy is, and it brings up all its machinery, and it chases that enemy to try to eat it.

If you really want to get into the nitty gritty of fluid dynamics and molecular physics you can read the full paper in Nature and a bit of a summary on Stanford News. (via, appropriately, F*ck Yeah Fluid Dynamics)

Asphyxia is an experimental film project by Maria Takeuchi and Frederico Phillips that explores human movement through motion capture technology. The team used two inexpensive Xbox One Kinect sensors to capture the movements of dancer Shiho Tanaka and then rendered the data inside a near photo-realistic environment. From their description of the project:

The project is an effort to explore new ways to use and/or combine technologies and different fields in an experiment without many of the common commercial limitations. The performance is centered in an eloquent choreography that stresses the desire to be expressive without bounds.

Motion data was captured using inexpensive sensors and that data paved the way through an extensive number of steps. Once all the scanned point cloud data was combined, that was then used as the base for the creative development on the piece. A series of iterative studies on styles followed and several techniques and dynamic simulations were then applied using a number 3D tools for various results.

You can see a making of video here. If you liked this you might also enjoy Walking City, Choros, or these 2013 idents for CCTV. (via Prosthetic Knowledge)

linewebtoon:

Human Life,

Cluster Fudge _by John McNamee

piecomic

Só com muita meditação porque tem umas fases que vou te contar.

O post Mentirinhas #804 apareceu primeiro em Mentirinhas.

I just noticed the next few comics are all long-form. You luckers!!! Consider supporting my ass while I toil away over this hot tablet? There are rewards! www.patreon.com/markpain

Thank you!

by @dbl