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I really like this article. It reminds me of my own struggles with perfectionism. I know many people hold themselves back for the same fear of not getting everything perfect the first time, which sounds silly when put that way but it is still a real pressure that many people feel.

It took a long time for me to realize that making mistakes is the only way to accomplish anything meaningful.

Moreover, the importance of scientific study is not to acquire genius beyond error but to learn methods which help separate that which is correct from that which is not. The diligent and rigorous application of such being far more important than already knowing the answer or outcome beforehand.

http://jcs.biologists.org/content/121/11/1771

It took a long time for me to realize that making mistakes is the only way to accomplish anything meaningful.

Moreover, the importance of scientific study is not to acquire genius beyond error but to learn methods which help separate that which is correct from that which is not. The diligent and rigorous application of such being far more important than already knowing the answer or outcome beforehand.

http://jcs.biologists.org/content/121/11/1771

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**Ames Illusion**

*An Ames room is constructed so that from the front it appears to be an ordinary cubic-shaped room, with a back wall and two side walls parallel to each other and perpendicular to the horizontally level floor and ceiling. However, this is a trick of perspective and the true shape of the room is trapezoidal: the walls are slanted and the ceiling and floor are at an incline, and the right corner is much closer to the front-positioned observer than the left corner (or vice versa). As a result of the optical illusion, a person standing in one corner appears to the observer to be a giant, while a person standing in the other corner appears to be a dwarf. The illusion is so convincing that a person walking back and forth from the left corner to the right corner appears to grow or shrink.*Source: http://goo.gl/kkeT

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"Everyone knows the familiar plonk of a stone falling into a pond but few realize the complexity of the physics." http://fuckyeahfluiddynamics.tumblr.com/post/31271379467/everyone-knows-the-familiar-plonk-of-a-stone

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Teachers, parents, and students: The Oct. 24 deadline is approaching for NASA's Cassini Scientist for a Day essay contest, open to students in grades 5-12. More information: http://saturn.jpl.nasa.gov/scientistforaday/.

LASP and Cassini: http://bit.ly/uYX1k5.

+LASP CUBoulder

LASP and Cassini: http://bit.ly/uYX1k5.

+LASP CUBoulder

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***Correction to Euler's equations and elimination of the closure problem in turbulence***

It has been demonstrated that the

**Euler equations of inviscid fluid**are incomplete: according to the principle of release of constraints, absence of shear stresses must be compensated by additional degrees of freedom, and leads to Reynolds-type multivalued velocity field. however unlike the Reynolds equations, the enlarged Euler's (EE) model provides additional equations for fluctuations, and that eliminates the closure problem. Therefore the (EE) equations are applicable to fully developed turbulent motions where the physical viscosity is vanishingly small compare to the turbulent viscosity, as well as to superfluids and atomized fluids.Analysis of coupled mean/fluctuation EE equations shows that fluctuations stabilize the whole system generating elastic shear waves and increasing speed of sound. Those turbulent motions that originated from instability of underlying laminar motions can be described by the modified Euler's equation with the closure provided by the stabilization principle: driven by instability of laminar motions, fluctuations grow until the new state attains a neutral stability in the enlarged (multivalued) class of functions, and those fluctuations can be taken as boundary conditions for the EE model. The approach is illustrated by an example.

http://arxiv.org/abs/1208.6237

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**Industrial sized 3D printing - with metal**

*ink*Room sized and able to print in steel, chromium or cobalt, this Australian professor designed system speeds up metal printing by allowed faster cooling of parts. Materials are melted with a laser and deposited layer by layer to create varying complex shapes.

We now have in the burgeoning field of 3D printing machines that can print in plastic, wax, metal, and even concrete. Manufacturing is certainly going distributed and that's the goal of this new machine.

http://www.theage.com.au/technology/sci-tech/just-the-laser-printer-to-reshape-local-industry-20120827-24wox.html

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Interesting.

Does your brain ever stop developing?

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Been considering seeking a PhD lately, found this awesome visualization :

http://matt.might.net/articles/phd-school-in-pictures/

http://matt.might.net/articles/phd-school-in-pictures/

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