Brain-Rain.

Science in action. And also, goofing off.

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Posts tagged physics

Apr 2

Mar 31
gifak-net:

Glass Fracturing At 5 Million Frames Per Second

gifak-net:

Glass Fracturing At 5 Million Frames Per Second

(via scienceing)


Mar 26

Mar 8
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)


Jan 27

positrons:

friends
phriends
phryencs
physncs
physics

(via positrons-deactivated20140315)


Jan 26
antiquark2:

Paradox of the Day: Gabriel’s Horn.
Paradox: you can easily fill it with paint (has a finite volume), but you can’t actually paint the interior (has an infinite surface area).

antiquark2:

Paradox of the Day: Gabriel’s Horn.

Paradox: you can easily fill it with paint (has a finite volume), but you can’t actually paint the interior (has an infinite surface area).

(via scienceing)


Jan 21
bigblueboo:

44. 4. (line-square-cube-tesseract via folding)

bigblueboo:

44. 4. (line-square-cube-tesseract via folding)

(via iaccidentallyallthephysics)


Jan 17

jtotheizzoe:

wearemadeofstarstuff479:

These boards are so pretty.

I would have no heart to erase them.

Totally forgot to carry the 2 there, pal.


Jan 9
thatscienceguy:

Once the wire connects to both the + and - terminals of the battery current starts flowing which produces a magnetic field, this field pushes against the magnetic field of the magnet causing it to spin.

thatscienceguy:

Once the wire connects to both the + and - terminals of the battery current starts flowing which produces a magnetic field, this field pushes against the magnetic field of the magnet causing it to spin.

(via shychemist)


Jan 8

the-science-llama:

zerostatereflex:

"Using ultrasound, a team of Japanese scientists has levitated small particles, and moved them around mid-air."

Incredible!

Three-Dimensional Mid-Air Acoustic Manipulation (2013-)
Yoichi Ochiai (The University of Tokyo)
Takayuki Hoshi (Nagoya Institute of Technology)
Jun Rekimoto (The University of Tokyo / Sony CSL)

Awesome!
Here is another thing on acoustic levitation

(via iaccidentallyallthephysics)


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