“I can’t help you. I don’t know what’s right or wrong anymore.”
— Calculus professor
— Calculus professor
Be like water making its way through cracks. Do not be assertive, but adjust to the object, and you shall find a way around or through it. If nothing within you stays rigid, outward things will disclose themselves.
Empty your mind, be formless. Shapeless, like water. If you put water into a cup, it becomes the cup. You put water into a bottle and it becomes the bottle. You put it in a teapot, it becomes the teapot. Now, water can flow or it can crash. Be water, my friend.”
— Bruce Lee (via acrylicalchemy)
(Source: Be like water making its way through cracks. Do not be assertive, but adjust to the object, and you shall find a way around or through it. If nothing within you stays rigid, outward things will disclose themselves. Empty your mind, be formless. Shapeless, like water. If you put water into a cup, it becomes the cup. You put water into a bottle and it becomes the bottle. You put it in a teapot, it becomes the teapot. Now, water can flow or it can crash. Be water, my friend., via promptme-f-sifi)
SDO: Current composite image (AIA 211, 193, 171) as of 10:59pm US Pacific time, June 15th 2014.
A Thought-Provoking Toy
by Michael Keller
The spinning top above illustrates an unusual asymmetry where it flips over if spun in a clockwise motion and stays upright when spun counterclockwise. This behavior is a result of chirality, a property in which something displays handedness. When the an object or system is chiral, its mirror images can’t be exactly mapped to each other—like your right and left hands.
Tadashi Tokieda, director of studies in mathematics at Trinity Hall, University of Cambridge, investigates and invents toys like the one above that exhibit interesting behaviors. He’s also a fellow at Harvard’s Radcliffe Institute for Advanced Study, where he presented what he calls the world’s first chiral tippy top. See the video with this and other toys that display chirality below.
I’ve literally been laughing at this for the past five minutes
No matter how many times I this, it still makes me laugh.
I’ve been waiting for this post all my life
the disclaimer though
reblogging again because I actually read the disclaimer this time…
have you ever felt a post with all your soul
The Bailey-Borwein-Plouffe formula for pi.
Since this formula is a sum of numbers multiplied by decreasing powers of 16, removing the second set of parentheses gives a formula for the nth digit of pi past the decimal place, in hexadecimal. This can be used to find a specific binary, quartenary, or octal digit without finding all of the ones before it, since hexadecimal digits are equivalent to groupings of such digits. Before this formula was discovered, it was thought to be impossible to find one digit of pi without knowing those before it. This has still not been done for base 10, but it’s entirely possible that such a formula exists. If it does, though, it will have to be discovered by either brute force or luck, as there is no known mathematical procedure for determining Bailey-Borwein-Plouffe type formulas.
Scientists at MIT have developed a new simulation that traces 13 billion years of cosmic evolution. They start the simulation shortly after the big bang with a region of space much smaller than the universe (a mere 350 million light years across). Still, it’s big enough to follow the forces that helped create the galaxies we see today, and correctly predict the gas and metal content of those galaxies.
At first, we see dark matter clustering due to the force of gravity (first two GIFs). Then we see visible matter — blue for cool clouds of gas where galaxies form, red for more violent explosive galaxies (second two GIFs).
Super massive blackholes form, superheating the material around them, causing bright white explosions that enrich the space between galaxies with warm but sparse gas (fifth GIF).
Different elements (represented by different colors in the sixth GIF) are spread through the universe.
We arrive at a distribution of dark matter that looks similar to the one we see in our universe today (seventh GIF).
The simulation is so complex it would take two thousand years to render on a single desktop. And it’s kinda beautiful.
Image Credit: MIT and Nature Video
how am i supposed to concentrate in science when whENEVER I LOOK TO THE LEFT I SEE THIS
AT LEAST YOU DON”T HAVE TO DEAL WITH THIS
AT LEAST YOU DONT HAVE TO SIT NEXT TO THIS
Trapping light: A long lifetime in a very small place
Researchers create an innovative light-trapping nanostructure using a genetic-inspired approach
Physicists at the University of Rochester have created a silicon nanocavity that allows light to be trapped longer than in other similarly-sized optical cavities. An innovative design approach, which mimics evolutionary biology, allowed them to achieve a 10-fold improvement on the performance of previous nanocavities.
In a paper published in Applied Physics Letters today and featured on the cover, the scientists demonstrate they have confined light in a nanocavity – a nanostructured region of a silicon wafer – for nanoseconds. Typically light would travel several meters in that time, but instead the nanostructure confined light in a region no bigger than one one hundredth the width of a human hair – roughly one-half millionth of a meter.
"Light holds the key to some of nature’s deepest secrets, but it is very challenging to confine it in small spaces," says Antonio Badolato, professor of physics at the University of Rochester and corresponding author of the Applied Physics Letters paper. "Light has no rest mass or charge that allow forces to act on it and trap it; it has to be done by carefully designing tiny mirrors that reflect light millions of times."
Nanocavities are key components of nanophotonics circuits and Badolato explains that this new approach will help implement a new-generation of highly integrated nanophotonics structures. Researchers are interested in confining light because it allows for easier manipulation and coupling to other devices. Trapping light also allows researchers to study it at its fundamental level, that is, at the state when light behaves as a particle (an area that led to the 2012 Nobel Prize in Physics).
Until now, researchers have been using educated-guess procedures to design the light-trapping nanostructures. However in this case, the team of researchers – which included lead author and Badolato’s Ph.D. student, Yiming Lai, and groups from the Ecole Polytechnique Federale de Lausanne, Switzerland, and the Universita di Pavia, Italy– perfected a numerical technique that lead to the design improvement. Their computational approach allowed them to search for the optimal combination of parameters among thousand of realizations using a “genetic” (or “evolutionary”) algorithm tool.
The principle behind the genetic approach is to regard each new nanocavity as an individual in a population. The individuals mutate and “breed,” meaning that two single structures combine to create a new one that is a cross between the two “parents.” As new generations succeeded one another, the algorithm selected the fittest ones in each generation, in this case, the ones that exhibited the longest trapping time (i.e. highest quality factor).
Integrated nanophotonics is a new and rapidly growing field of research laying at the intersection of photonics, nanotechnology, and materials science. In the near future, nanophotonics circuits will enable disruptive technologies ranging from telecommunications to biosensing, and because they can process pulses of light extremely fast and with very low energy consumption, they hold the potential to replace conventional information-handling systems.
The results shown by Badolato and his colleagues demonstrate one of the highest quality factors ever measured in nanocavities while maintaining a very small footprint. By keeping the nanocavities so small while trapping light so efficiently it becomes possible to create devices with ultra-dense integration – a desired characteristic in the fabrication of optical nanocircuits.
The extreme sensitivity of these nanocavities to tiny changes in the environment, for example a virus attaching near the area where light is trapped, makes these devices particularly appealing for biosensing. By using these highly sensible nanocavities, such a biosensing device could detect minute quantities of these biomaterials by analyzing a single drop of blood. Badolato’s group is now starting a collaboration with researchers at the University of Rochester’s Medical Center to exploit this interesting property with the new nanocavities.
IMAGE….The top layer shows a simulation of the nanostructure confining the light in the tiny red regions. The second layer is the design generated by an approach that mimics evolutionary biology. The bottom two layers show electron micrographs of the realized nanostructure in silicon. The sharp peak on the left is the trace of the long trapping of light. Credit: Fabio Badolato
StarStuff episode 680 is now out
Listen to it on the best ABC radio stations across Australia.
On Science 360 Radio in the United States.
On line as audio on demand and as a podcast at:
or as a free download from iTunes
This week’s show…..
Milky Way cosmic collision
A new study has found that the myriad of dwarf satellite galaxies orbiting around the Milky Way, are actually the remains of a massive collision billions of years ago between our galaxy and another. The discovery could mean our existing model of galaxy evolution needs a major rethink.
Continental drift accelerating
The movement of the Earth’s major continental tectonic plates isn’t constant and appears to be speeding up. The findings are at odds to existing theories which expect plate movements to slow down as the Earth’s interior slowly cools.
Solar Max confirmed
NASA has confirmed that the Sun’s magnetic field has reversed polarity, indicating our local star has reached solar maximum the climax of it’s 11 year solar cycle. Astronomers have described Solar Cycle 24 as dropping to historically-low levels with the longest and deepest solar minimum in a century and among the weakest on record.
Winter/Summer solstice time
At 8:51 pm this Saturday June 21st the southern hemisphere will experience its winter solstice as summer finally arrives in the northern hemisphere. The Earth’s axial tilt is the reason for the season.
Sea Launch back in business
The company launching rockets from a converted floating oil rig in the middle of the Pacific Ocean is back in business, sending a communications satellite into orbit. The successful flight was the first launch since a spectacular failure in February last year halted all Sea Launch operations.
New Generation GPS satellite launched
A new generation Global Positioning System navigation satellite has blasted into orbit from Cape Canaveral in Florida. The next generation GPS satellite will provide improved accuracy and enhanced performance.
StarStuff is broadcast weekly on the best ABC Radio stations in Australia,
On the National Science Foundation’s Science 360 Radio across the United States.
As audio on demand and as a free podcast at….