I decided to build a polariscope for my Lego optics lab.
On occasion you might need a mechanism to rotate filters such as a polarized filter and a polariscope is a simple and fun way to view the rainbow colors in clear plastic objects such as flatware, tape dispensers, etc.
Most people, when they think about exploring the galaxy, think about sending out human colonies. It's natural to think we would explore it just as we do the Earth, it's the only way we know. To send machines instead of humans, especially machines that can replicate, may seem frightening. But - I'd argue, humans colonies are by far the most scary way we could explore the galaxy. It might well be a case of "look out galaxy (and Earth), the monsters are coming" :).
So what can we do? What is a responsible way to explore our galaxy, with current understanding of science, biology, and society, and could this explain why our galaxy is not filled right to the brim already with extra terrestrials?-->
Karin Orsel, a veterinary epidemiologist at the University of Calgary in Canada is testing how accelerometers – the same devices inside fitness monitors that measure a person's activity level – can be used to detect disease in beef cattle before it becomes obvious to ranchers.-->
His sight settles on the shoulder pip of a second lieutenant. The target bends down out of sight, then reappears, now with a phone at his ear.
He stands still as he sends his dispatch. It’s an easy shot for the sniper. He squeezes the trigger and yet another young man dies.
Rabbits have long been considered immune to prion disease, but recently scientists have shown that they can--under certain circumstances--get transmissible spongiform encephalopathy (or TSE, the scientific term for the fatal brain disease caused by prions). Two studies address what makes rabbits hard to infect with prions and how their resistance can be overcome.
The Institute of Laser Engineering (ILE), Osaka University, has succeeded to reinforce the Petawatt  laser "LFEX" to deliver up to 2,000 trillion watts in the duration of one trillionth of one second (this corresponds to 1000 times the integrated electric power consumed in the world). By using this high-power laser, it is now possible to generate all of the high-energy quantum beams (electrons, ions, gamma ray, neutron, positron).
Just a little moderate to vigorous physical activity-below the recommended amount-every week still seems to curb the risk of death among the over 60s, suggests a recent analysis.
Mild hypothermia in deceased organ donors significantly reduces delayed graft function in kidney transplant recipients when compared to normal body temperature, according to UC San Francisco researchers and collaborators, a finding that could lead to an increase in the availability of kidneys for transplant.
By passively cooling deceased organ donor body temperature by approximately two degrees from normal body temperature, researchers saw an overall nearly 40 percent increase in the successful function of donated kidneys after surgery. In particular, kidneys especially at risk of poor post-surgical functional were protected.
Our nation's veterans continue to suffer emotional and psychological effects of war--some for decades. And while there has been greater attention directed recently toward post-traumatic stress disorder (PTSD), and more veterans are seeking help, current psychotherapy treatments are less than optimal, according to a new narrative review.
A new patient sits across from me in the exam room, confused and frustrated at her lack of progress trying to lose weight for the last 30 years. 200 pounds too heavy, diagnosed with type 2 diabetes, high cholesterol, hypertension, sleep apnea, infertility and osteoarthritis. She needs knee replacements, but is too heavy to be approved for the surgery.-->
By: Karin Heineman, Inside Science TV – Viruses: they’re too tiny for us to see, yet they’re lurking everywhere. And guess what? They spread really fast through an office environment.
“Most people don’t realize they easily spread by your hands,” said University of Arizona microbiologist Charles Gerba. Most people think that viruses spread by inhaling sick people’s coughs or sneezes, but “it’s really when those droplets settle out and you touch that surface” that tiny viruses spread, he said. People unknowingly bring their virus-covered fingers to their noses, mouths, or eyes, kicking off infection.-->
It’s a question that has long interested scientists working on vision and optics. In a new study published in the journal Science Advances, colleagues from Durham, Berkeley and I explain why these pupil shapes have developed.-->
So, I get in a pissy mood once in a while. Before you judge, you try taking the Times Square-Grand Central Station shuttle every day. See what kind of mood you end up in:
Then I read something so infuriatingly stupid in the Huffington Post — which is of questionable value even on a good day — that my already-sour disposition headed even further south.-->
The Energy Information Agency (EIA) projected in May that President Obama’s new Clean Power Plan (CPP) will lead to retail electricity prices 3%-7% higher for the nation as a whole in 2020-25, before falling to “near-baseline” levels in 2030. Yet speaking in the White House on August 3, the president denied the CPP would “cost you more money.”-->
Scientists on the NuMI Off-Axis Electron Neutrino Appearance (NOvA) experiment saw their first evidence of oscillating neutrinos, confirming that the extraordinary detector built for the project not only functions as planned but is also making great progress toward its goal of a major leap in our understanding of these ghostly particles.
Cancer survival in England remains lower than countries with similar healthcare systems, according to a new study. Cancer survival in England has steadily improved but the gap in survival remains.
The research, from the London School of Hygiene&Tropical Medicine, compared survival for colon, breast, lung, ovarian, rectal and stomach cancers in England, Australia, Canada, Denmark, Norway and Sweden between 1995 and 2009, and survival trends in England up to 2012. It included more than 1.9 million cancer patients in England and another 1.9 million cancer patients from the other five countries. The report analyzed data from Australia, Canada, Denmark, Norway and Sweden between 1995 and 2009 and data from England between 1995 and 2012.
Patients with low testosterone levels who have then gone on to have testosterone replacement therapy (TRT) could be at lower risk of cardiovascular events such as heart attack or stroke, according to research published today (Thursday) in the European Heart Journal.
In the study, researchers from Kansas City VA Medical Centre in Kansas City, USA, examined the effect of TRT on cardiovascular outcomes by comparing incidences of heart attack, stroke, and all-cause mortality among different sub-populations of treated and untreated patients. The study used the largest cohort of patients and the longest follow-up for TRT to date.
The non-medical use of prescription opioids (POs) has become an area of increasing public health concern in the United States and rates of use are particularly high among young adults. In the past decade, an emerging "epidemic" of non-medical PO use has been reported.
Among young adults, self-reported use is 11% and overdose deaths involving POs now exceed deaths involving heroin and cocaine combined. Sexual violence is also a serious problem in the United States receiving increased national attention, and the relationship between substance use and sexual violence is well supported in the literature.