Brain-Rain.

Science in action. And also, goofing off.

Join me in my quest to become brilliant.

Mar 18

Mar 14

jtotheizzoe:

This pi may be old, but it’s still delicious.  

Gah, I love vintage Coronet Instructional Films. You can watch the whole Coronet archive here, for free!

via okkultmotionpictures:

Happy OKKULT Pi Day


EXCERPTS >|< Meaning Of Pi (1949)


 | Hosted at: Internet Archive
 | From: A/V Geek Film Archive
 | Download: Ogg | h.264 | MPEG4
 | Digital Copy: Public Domain Mark 1.0

A series of Animated GIFs excerpted from Meaning of Pi (1949). The video Explains how pi denotes the ratio of a circle to its diameter, shows the use of circles in art, industry and commerce, outlines a procedure by which the numerical value of pi can be checked and reviewed, and describes the discovery and importance of pi.

We invite you to watch the full video HERE


Excerpts by OKKULT Motion Pictures: a collection of GIFs excerpted from open source/unknown/rare/controversial moving images.
A digital curation project for the diffusion of open knowledge.

>|<


Mar 11

sagansense:

Vintage Space Art.

via sci-universe

(via laboratoryequipment)


Mar 10

aesir-blade:

Vibrational modes of a circular drum — time frequency not to scale.

(via positrons-deactivated20140315)


Mar 9
hellyeahships:

astutes:

A clock that writes the time.

I don’t know why but that’s so cute

hellyeahships:

astutes:

A clock that writes the time.

I don’t know why but that’s so cute

(via ourrobotmasters)




Mar 8

compoundchem:

A bit of a detour into neuroscience today with a look at the chemical structures of some of the major neurotransmitters in the brain. Inspired in part by this post on the chemicals related to various emotions.

All available to download as free A3 PDFs at the bottom of the accompanying post (http://wp.me/p4aPLT-6C).

(via iaccidentallyallthephysics)


fuckyeahfluiddynamics:

A simple cylinder in a steady flow creates a beautiful wake pattern known as a von Karman vortex street. The image above shows several examples of this pattern. Flow is from bottom to top, and the Reynolds number is increasing from left to right. In the experiment, this increasing Reynolds number corresponds to increasing the flow velocity because the cylinder size, fluid, and temperature were all fixed. As the Reynolds number first increases, the cylinder begins to shed vortices. The vortices alternate the side of the cylinder from which they are shed as well as alternating in their sense of rotation (clockwise or counterclockwise). Further increasing the Reynolds number increases the complexity of the wake, with more and more vortices being shed. The vortex street is a beautiful example of how fluid behavior is similar across a range of scales from the laboratory to our planet’s atmosphere.  (Image credit: Z. Trávníček et. al)

fuckyeahfluiddynamics:

A simple cylinder in a steady flow creates a beautiful wake pattern known as a von Karman vortex street. The image above shows several examples of this pattern. Flow is from bottom to top, and the Reynolds number is increasing from left to right. In the experiment, this increasing Reynolds number corresponds to increasing the flow velocity because the cylinder size, fluid, and temperature were all fixed. As the Reynolds number first increases, the cylinder begins to shed vortices. The vortices alternate the side of the cylinder from which they are shed as well as alternating in their sense of rotation (clockwise or counterclockwise). Further increasing the Reynolds number increases the complexity of the wake, with more and more vortices being shed. The vortex street is a beautiful example of how fluid behavior is similar across a range of scales from the laboratory to our planet’s atmosphere.  (Image credit: Z. Trávníček et. al)


spaceexp:

Saturn within the rings
Source: Val Klavans

spaceexp:

Saturn within the rings

Source: Val Klavans

(via likeaphysicist)