Monday, June 27, 2011

Why do fireflies light up?

via Rod Smith

'Fireflies are sometimes called lightning bugs. Many a child has spent a summer evening chasing them. And maybe you’ve wondered – how and why are these insects able to light up?

The answer is that fireflies contain an organic compound in their abdomens called luciferin. As air rushes into the abdomen, it reacts with the luciferin. A chemical reaction gives off the familiar glow of a firefly. This light is sometimes called “cold light” because it generates so little heat. The firefly can regulate the airflow into the abdomen to create a pulsating pattern.

Some experts think the firefly’s flashy style may warn predators of the insect’s bitter taste. On the other hand, some frogs don’t seem to mind. They eat so many fireflies that they themselves begin to glow. Male fireflies also light up to signal their desire for mates – and willing females attract the males with flashes of their own.

But not all the flashing of fireflies is motivated by romance. While each firefly species has its own pattern of flashing, some females imitate the patterns of other species. Males land next to them – only to be eaten alive.

So the next time you see a firefly, keep in mind that its flickering isn’t just a wonder of the night. It’s also a unique, and sometimes deadly, language of love'


11th dimension?

via What is 11th dimension? - Definition from Whatis.com

'The 11th dimension is a characteristic of space-time that has been proposed as a possible answer to questions that arise in superstring theory. The theory of superstrings involves the existence of nine dimensions of space and one dimension of time (a total of 10 dimensions). According to this notion, we observe only three spatial dimensions and one time dimension because the other six spatial dimensions are "curled up" or "compactified."

According to superstring theory, all of the elementary particles in the universe are composed of vibrating, one-dimensional mathematical objects known as strings. The theory does not explicitly state what the strings are made of or where they come from; rather, they are proposed as geometric ideals. Each string has a length of only 10-35 meters, many times smaller than the diameter of the nucleus of an atom. Any given subatomic particle (or hadron) is made of a string that vibrates and rotates at the speed of light. A particular hadron gets its unique identity from the manner in which the string rotates and vibrates according to the dynamics of Einstein's theory of general relativity. The frequency of vibration corresponds to the mass of the particle.

The nagging question remains, "Where do the strings come from?" Also, there are five different versions of superstring theory that explain the way subatomic particles behave. Are all five versions correct, or are some correct and others wrong? In an attempt to answer these questions, some physicists have suggested that there exists an 11th dimension, which is compactified like the other six spatial dimensions we do not directly observe. Superstring theory with the inclusion of the 11th dimension is sometimes called M theory or the theory of everything (TOE).'

treated like the enemy: arriving at the internment camp

an excerpt from

Looking Like the Enemy: My Story of Imprisonment in Japanese-American Internment Camps

by Mary Matsuda Gruenewald


The train ride out of Pinedale, though stressful, was at least a break from the monotonous routine of one and a half months in the camp. The old train cars were musty, dirty and creaky, just like the last train. As before, the windows were smoked and we could not look at the passing landscape. How I wished we could have seen signs of normal life.

Rocking back and forth on the decrepit seats, we were lost in our thoughts. Papa-san sat erect most of the time, occasionally leaning his head against the headrest while he intermittently sighed deeply and stared into space. Periodically his eyes glazed over and a frown creased his forehead. I imagined, He is feeling the loss of all he and Mama-san have worked so hard to establish. I turned away, unable to tolerate his loss on top of my own.

When I looked across at Mama-san she nodded her head and smiled as though to reassure me, yet I could see the sadness in her eyes. At times she sat with her hands clasped in her lap, her lips pressed tightly together, as she discreetly looked around at those who rode with her to the next unknown destination.

Papa-san, Mama-san, and I remained seated most of the time, but Yoneichi moved about the train car talking with people. When he came back to sit with us, his foot jiggled nervously up and down. Others dozed or looked about with dull eyes. We were all preoccupied with questions of the future.

My periodic trips to the restroom took me past several families from Vashon huddled together in somber silence. The Aoyama family sat with bowed heads. Mrs. Aoyama, one of Mama-san's closest friends from home, nodded to me each time I passed. The Ohashis and their three boys sat together looking grim and preoccupied. I raised my hand slightly and tried to smile at Ardith Kumamoto sitting with her parents and her three sisters. Ardith was a petite, pretty girl with big, dark eyes and long eyelashes. She and I had become good friends because we used to perform Japanese dances together back home. From the time she was in the fifth grade and I was in the fourth grade, we went weekly to Mrs. Nakamura's Japanese dance class. We would practice for performances in Japanese community events. It was the only time I could dress up and wear a touch of lipstick.

One time Ardith's father took us for a ride in their black, shiny touring car with the top folded down. In the 1930s, cars were still a novelty on the island, and getting a ride was a real treat. Ardith and I giggled as we sat together in the back seat anticipating our ride. First Mr. Kumamoto adjusted the levers on the steering column that controlled the fuel and ignition. Then he walked around to the front, rested his left hand on top of the radiator, and grasped the crank with his right. He gave it a brisk, firm turn, then another. After several cranks the motor took hold, belched, sputtered, and shook as Mr. Kumamoto sprang into the driver's seat. Black smoke spewed out the tail pipe then gradually changed to white as he readjusted the levers. The motor settled down into a rhythmic clatter and the car began to move forward in low gear. Releasing the hand lever and removing his foot from the pedal, the car shifted into high gear. The car leapt forward amid our cheers and we sat back to enjoy the wind on our faces. What an incredible sense of freedom! Ardith and I raised our arms and cheered wildly.

Seeing my neighbors' faces on the train took me to thoughts of Vashon and home. How I missed the island lush with evergreens, surrounded by the pristine waters of Puget Sound. I closed my eyes and inhaled deeply, imagining the crisp, clean air of Vashon. How I longed for a drink of pure, cool water from our well. How innocent I had been in that peaceful environment with the warm and satisfying relationships of neighbors, friends, and classmates. But in the midst of my reverie, no matter how hard I tried, I could not shake the dread. We are going to a "permanent" camp. Does permanent mean we will be "permanently dead?" If so, how, when and where?

It was fortunate that I had not heard about the concentration camps in Europe and the murdering of millions of Jews by the Nazis. While in fact we had it much better than the Jews in Nazi Germany, if I had known of their plight, I might have gone over the edge. Fear of being shot or killed was never far from my consciousness. I felt compelled to stay close to Mama-san, Papa-san, and Yoneichi, and always to be on the same train.

The tension in the air heightened abruptly when the locomotive blew its whistle and slowed to a stop. We had been riding for about a day and a half. I crossed my legs and tightened my arms about my body. This must be it, I whispered to myself.

A soldier suddenly appeared at the end of the car. "Okay, everybody off," he barked. People slowly got out of their seats, grabbed their luggage, and began filing out one by one. I followed those ahead of me to the doorway, then stopped as I glanced out the door. This camp was gigantic. I was overwhelmed. The soldier at the bottom of the stairway shouted at me, "Come on! Come on! Move ahead! Keep moving!" He rotated his forearm in continuous circles, as if that would force me to move faster.

What's going to happen to us here? I wondered. I felt sick to my stomach and my chest tightened as I looked at a blur of black barracks separated by huge bare spaces. Later I found out that the purpose of the wide, bare ground was to create firebreaks between the flimsy wooden barracks. The firebreaks divided the camp into seven wards. Most of the wards were made up of nine blocks; each block had fourteen barracks. There were sixty-four blocks altogether. With approximately 260 men, women, and children per block we had a population of over 18,000 people at this new internment camp. I had no idea there were so many Japanese people living in America.

We had arrived at Tule Lake Internment Camp, located twenty-six miles south of Klamath Falls, Oregon. Despite its name I never saw a lake anywhere near the internment camp. Like Pinedale Assembly Center, this camp was encircled with a high, chain-link fence topped by three rows of barbed wire, all slanted inward. Soldiers with machine guns watched us from tall watchtowers located strategically around the perimeter. These lookouts were equipped with large mounted searchlights that continuously swept 360 degrees at night. The vast expanse of dreary, regimented, black tar-papered barracks were like the ones we had just left, only this camp looked ten times bigger and I felt one hundred times smaller.

My head whirled as my eyes tried to take in the scene. A momentary wish flashed through my mind. This is just a bad dream. I will wake up back home. It took Mama-san's gentle nudge from behind and her soft voice saying, "Let's go find where we will be staying," to make me realize this was not a nightmare. I stepped down from the train. Just then three young Japanese men walked by, raised their right fists, and yelled, "Tenno Heika Banzai -- Long live His Majesty the Emperor." In the midst of so much noise and tension, I barely noticed them nor had any inkling of what this signified for the future. People were milling all around us, shouting orders and flailing their arms as we piled up near the train. It was hot and dusty without any breeze to relieve the stifling confusion.

We were ordered to climb into waiting army trucks. A Nisei man drove us to our "space" which was 7404 C (block 74, barrack 4, apartment C) in the northwestern corner of the camp. The barracks here were similar to those at the Pinedale Assembly Center: 120 feet long, divided into varying sized "apartments," which were nothing more than rectangular rooms with openings above the seven-foot walls. These open spaces extended the full length of the barrack. Any sound made in any one of the living cubicles could be heard throughout the barrack.

When we got to our twenty-foot by twenty-foot space, I remarked to my family, "Look, the room is smaller but we don't have to share it with anyone else. That's good." Our parents silently nodded. Looking at the pot-bellied stove Yoneichi commented, "Must get cold here." That winter the doorknob would get so cold our fingers would stick to it. We would be plagued by the subfreezing temperatures, scarcely protected by the flimsy barrack walls.

The central part of the camp had already been occupied by Japanese-Americans who came first -- mostly from Sacramento, California. Those of us from Washington and Oregon were sent either to the northwestern section of the camp or the southeastern part. This would become significant later. I would quickly realize that I felt more comfortable spending time in our own area with those from the Northwest and especially from Vashon.

Once again we fell quickly to the task of setting up "home." Papa-san and Yoneichi went to find ticking and straw for our mattresses. Mama-san and I looked around our living space, wondering what we could do to make it ours. There were the familiar army cots and blankets for each of us. Aside from the stove and the light bulb screwed into a ceramic socket on the end of a cord hanging from the ceiling, the room was bare. It was just a space waiting for whatever drama was to be played out.

Mama-san said as she pointed, "Let's line up the cots along this wall away from the window. In case the wind blows the dust in as it did in Pinedale, it won't be as bad when we're asleep."

"Okay. This time we can put our stuff wherever we want to." I was glad we didn't have to share our space with another family. It didn't take long to set up our few personal things out of our suitcases.

My initial shock at seeing the camp for the first time gave way to depression as reality set in. We were going to be here for awhile, perhaps forever for all I knew. The drab surroundings and familiar still air of the hot evening crushed whatever small hopes I may have had after leaving Pinedale.


read the entire excerpt, The Last Dance in the Searchlight, at januarymagazine.com

like a fish swims a bicycle


via Pee-wee Herman

"And now we know! Fish swim as if they're riding bicycles."
www.guardian.co.uk

Biologists have found striking parallels between a peloton of cyclists in the Tour de France and a school of fish...

"The Power of Open: Stories of Creative Commons success"

via blog.mises.org

'This is a fantastic book. Some of the more interesting and inspiring profiles include TED Talks, Nina Paley, Bloomsbury Academic, Isabella Stewart Gardner Museum’s “Classical Music for the Masses” (see their amazing podcast, The Concert, which “has made world-class performances recorded live at the museum available to listeners across the globe”), Khan Academy, and the Public Library of Science. A common theme among many CC users is the importance of spreading ideas: as TED executive June Cohen says, “When we decided to open our library, we had one single goal: to spread ideas.”

“Sharing online was a very controversial decision. People feared it would capsize our business, discourage people from paying for our conference, and be rejected by speakers.

“The first year after releasing videos of talks for free, we raised the cost of the conference by 50 percent and sold out in one week with a 1,000 person waiting list,” Cohen says. “Not only do speakers lobby for the talks to be posted as soon as possible, but paying conference participants are anxious to share talks they just heard with family, friends and colleagues.”

TED Talks featuring Swedish medical doctor and statistician Hans Rosling and his presentations on developing countries show how CC licenses can popularize a subject. “Hans told me that posting his “rst TED Talk online did more to impact his career than all of the other things he had done previously,” Cohen says. “It opened up a whole new world for him.”

'I think they missed one important one: the phenomenal growth and influence of Mises.org since adopting CC-BY.'

The Power of Open: Stories of Creative Commons success

Jane from Creative Commons says,


Since last fall, we’ve been talking at length to various creators about their CC stories–the impact Creative Commons has had on their lives and in their respective fields, whether that’s in art, education, science, or industry. We are thrilled to announce that we have cultivated the most compelling of these stories and woven them together into a book called The Power of Open. The stories in The Power of Open demonstrate the breadth of CC uses across fields and the creativity of the individuals and organizations that have chosen to share their work via Creative Commons licenses and tools. The Power of Open is available for free download under the CC Attribution license. It is available in several languages, with more translated versions to come. You can also order hard copies from Lulu. We hope that it inspires you to examine and embrace the practice of open licensing so that your contributions to the global intellectual commons can provide their greatest benefit to all people.