natural – Shamskm: A site to exchange knowledge and solutions

Resonance in Rainbow Bridge

By Guest PostDecember 28, 2016Scienceaircraft carrier, ben white, jeff moore, man made, model, natural, nimitz class, rainbow bridge, resonance, utah, vibrations

University of Utah study listens to the natural bridge vibrate and sing

Utah’s iconic Rainbow Bridge hums with natural and man-made vibrations, according to a new University of Utah study, published September 21 in Geophysical Research Letters. The study characterizes the different ways the bridge vibrates and what frequencies and energy sources cause the rock structure to resonate. The vibrations are small, according to geology and geophysics professor Jeff Moore, but the study provides a baseline measure of the bridge’s structural integrity and shows how human activities can rattle solid rock. (more…)

Creating fuel from sunlight

By Guest PostOctober 29, 2013Environment, Sciencecarbon dioxide byproduct, CO2, components of syngas, creating fuel, energy mix, fossil fuel, from, jane davidson, liquid hydrocarbon fuel, methane, natural, next generation, solar power, solar simulator, sunlight, syngas, synthetic gas, tom chase, university of minnesota

Turning fossil fuel into energy is easy: You just burn it. And live with the carbon dioxide byproduct. What if we could reverse the process and turn water and carbon dioxide back into fuel?

A dream solution, but it may seem like trying to put the genie back in the bottle. (more…)

Freezing Electrons in Flight

By Guest PostOctober 13, 2012Science1878, arizona, artificial, arvinder sandhu, atmosphere, atom, attosecond, camera, chemical process, destruction, eadweard muybridge, earth, electron, electron emission, electronic devices, electronic motion, emulsion plate, excited atom, femtosecond, formation, ground, henry timmers, high energy, horse, iconic series, laser flash, laser pulses, microscopic dynamics, molecular process, muybridge, mystery, natural, niranjan shivaram, oxygen molecule, ozone, phenomena, photo, photograph, physical, quintillionths, real-time, second, stroboscopy, super excited, technique, touch, ultrafast, ultraviolet light, university, upper atmosphere, zeptosecond

Using the world’s fastest laser pulses, which can freeze the ultrafast motion of electrons and atoms, UA physicists have caught the action of molecules breaking apart and electrons getting knocked out of atoms. Their research helps us better understand molecular processes and ultimately be able to control them in many possible applications.

In 1878, a now iconic series of photographs instantly solved a long-standing mystery: Does a galloping horse touch the ground at all times? (It doesn’t.) The images of Eadweard Muybridge taken alongside a racetrack marked the beginning of high-speed photography.

Approximately 134 years later, researchers in the University of Arizona department of physics have solved a similar mystery, one in which super-excited oxygen molecules have replaced the horse, and ultrafast, high-energy laser flashes have replaced Muybridge’s photo emulsion plates. (more…)

Protecting People From Deadly Floods, Quakes in The Philippines

By Guest PostFebruary 25, 2012Environment, Generaldisaster, earthquake, economic vulnerability, elizabeth renckens, flash flooding, flood zones, flooding, gavin shatkin, geological features, greater metropolitan manila, manila, marikina river, mudslides, natural, philippine, southeast asian, topography, typhoons, university of michigan, urban planning, william foreman

ANN ARBOR, Mich.— Typhoons thrash the Philippines every year, causing flash flooding and mudslides that often kill hundreds of people in the Southeast Asian nation. Many blame the death and destruction on the wrath of nature. But Gavin Shatkin has a different view.

“Disasters are not natural,” said Shatkin, an associate professor of urban planning at the University of Michigan. “They happen because of social structures.” (more…)

Weighing the Costs of Disaster: Consequences, Risks, and Resilience in Individuals, Families, and Communities

By Guest PostFebruary 5, 20111 commentCulture, Generalchris brewin, cisd, critical incident stress debriefing, disasters, economic resources, george bonanno, krzysztof kaniasty, manmade, natural, pfa, psychological effects of disasters, psychological first aid, warning

Disasters — both natural and manmade — can strike anywhere and they often hit without warning, so they can be difficult to prepare for. But what happens afterward? How do people cope following disasters? In a new report in Psychological Science in the Public Interest, a journal of the Association for Psychological Science, George Bonanno, Chris R. Brewin, Krzysztof Kaniasty, and Annette M. La Greca review the psychological effects of disasters and why some individuals have a harder time recovering than do others.

Individuals exposed to disaster may experience a number of psychological problems including PTSD, grief, anxiety, and increased substance abuse, but the evidence shows that less than 30% of adults experience severe, lasting levels of these problems. The majority of people exposed to a disaster experience passing distress but return to psychological health. In other words, people tend to be psychologically resilient. (more…)

‘Music and Caroling an Important Part of Holiday Celebrations’

By Guest PostDecember 14, 20101 commentCultureamerican music research center, americans, beliefs, carol, caroling, celebrate, celebration, chestnuts roasting on an open fire, community activity, country life, dance song, english, frosty the snowman, germans, holiday songs, holidays, jingle bells, joy to the world, midnight clear, music, musicologist, natural, rudolph the red nosed reindeer, secular, silent night, singing, the christmas song, thomas riis

During the holidays, no matter how you celebrate or what your beliefs, music is almost always an important part of the celebration, according to Thomas Riis, a musicologist and director of the American Music Research Center in the University of Colorado at Boulder’s College of Music.

“Singing brings people together and is a natural and comfortable community activity,” Riis said. (more…)

Listen up! U-M Experiment Records Ultrafast Chemical Reaction with Vibrational Echoes

By Guest PostSeptember 1, 20101 commentScienceartificial, carlos baiz, cellular respiration, charge transfer reactions, chemical reaction, chemical transformations, conversion, femtoseconds, kevin kubarych, magician, natural, solar energy, solvent shell, university of michigan, vibrational frequencies

ANN ARBOR, Mich. — To watch a magician transform a vase of flowers into a rabbit, it’s best to have a front-row seat. Likewise, for chemical transformations in solution, the best view belongs to the molecular spectators closest to the action.

(more…)

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