1st image: Christians in Egypt forming a barrier to protect Muslims while they pray (2011)
2nd image: Muslims in Egypt forming a barrier to protect a church from being destroyed (2013)
Humanity: You’re doing it right.
THIS is what Religion is supposed to be, Take your bigotry elsewhere.
I’ve said it before.
I’ll say it again.
THIS. Is what HUMANITY is supposed to be.
Hell yea people
It’s a holiday miracle!
Without further ado, Tumblr for iPad is finally here. We hope you like it as much as we do.
(And don’t forget — Tumblr is awesome on your Android tablet too!)
In fluid dynamics, we like to classify flows as laminar—smooth and orderly—or turbulent—chaotic and seemingly random—but rarely is any given flow one or the other. Many flows start out laminar and then transition to turbulence. Often this is due to the introduction of a tiny perturbation which grows due to the flow’s instability and ultimately provokes transition. An instability can typically take more than one form in a given flow, based on the characteristic lengths, velocities, etc. of the flow, and we classify these as instability modes. In the case of the vertical rotating viscous liquid jet shown above, the rotation rate separates one mode (n) from another. As the mode and rotation rate increase, the shape assumed by the rotating liquid becomes more complicated. Within each of these columns, though, we can also observe the transition process. Key features are labeled in the still photograph of the n=4 mode shown below. Initially, the column is smooth and uniform, then small vertical striations appear, developing into sheets that wrap around the jet. But this shape is also unstable and a secondary instability forms on the liquid rim, which causes the formation of droplets that stretch outward on ligaments. Ultimately, these droplets will overcome the surface tension holding them to the jet and the flow will atomize. (Video and photo credits: J. P. Kubitschek and P. D. Weidman)
Chinese Researchers Achieve Quantum Teleportation at Macro Scale
So by entangling two photons, for instance, physicists have demonstrated the ability to transmit quantum information from one place to another by encoding it in these quantum states—influence one of the pair and a change can be measured in the other without any information actually passing between the two. Researchers have done this before, between photons, between ions, and even between a macroscopic object and a microscopic object.
But now Chinese researchers have, for the first time, achieved quantum teleportation between two macroscopic objects across nearly 500 feet using entangled photons…
The two bundles of rubidium atoms that served as sender and receiver are more or less analogs for what we hope will someday be our “quantum Internet”—a system of routers like the ones we have now that, instead of beaming information around a vast network of fiber optic wires, will send and receive information through entangled photons.
So in a way, this is like a first proof of concept, evidence that the idea works at least in the lab. Now all we have to do is figure out is how to build several of these in series so they can actually pass information from one to the other. To do that, we only have to somehow force these quantum states to exist for longer than the hundred microseconds or so that they last now before degrading. Sounds easy enough.
Maryam Mirzakhani: Why she kicks ass
- She is a mathematician.
- Professor of Mathematics (since September 1, 2008) at Stanford University.
- Her areas of research interest include: Teichmüller theory, hyperbolic geometry, ergodic theory, and symplectic geometry.
- She is an alumnus of National Organization for Development of Exceptional Talents (NODET) Tehran, Iran (Farzanegan highschool).
- She found international recognition as a brilliant teenager after receiving gold medals in both the International Mathematical Olympiad (Hong Kong 1994) in which she scored 41 out of 42 points, ranking her 23rd jointly with five other participants, and in the International Mathematical Olympiad (Canada 1995) with a perfect score of 42 out of 42 points, ranking her 1st jointly with 14 other participants.
- She obtained her BSc in Mathematics (1999) from the Sharif University of Technology.
- She holds a PhD from Harvard University (2004).
- She was a Clay Mathematics Institute Research Fellow and a professor at Princeton University.
- Some of her awards and honours include: IPM Fellowship The Institute for theoretical Physics and Mathematics, Tehran, Iran, 1995-1999; Merit fellowship Harvard University, 2003 and Harvard Junior Fellowship Harvard University, 2003.