Category Archives: Science

“Food for thought for the future. Or maybe the past?”

NPR cosmos & culture: Can We Change The Past?

“An important detail is that the switching over of detecting apparatus must be faster than the time the photon has to travel to the detectors. This way, there is no way the photon could “know” what to do. (If a photon knows anything, anyway.) Experiments presented in October extended the range of the photon’s trip to about 2,200 miles, and still the photon seems to always choose the path consistent with the delayed choice. It is as if — Mike McRae wrote in this Science Alert piece — “that even after the horse has bolted 2,200 miles out of the gate, it can still wait until the finish line to decide which race it ran.” That is, which path to the finish line it took.”

Superhero-vision camera

NPR all tech considered: Super Sensitive Sensor Sees What You Can’t.

“A team of engineers at Dartmouth College has invented a semiconductor chip that could someday give the camera in your phone the kind of vision even a superhero would envy. […] Fossum calls his new technology QIS, for Quanta Image Sensor. Instead of pixels, QIS chips have what Fossum and his colleagues call “jots.” Each jot can detect a single particle of light, called a photon.”

Clinical trials seem promising

Gone With A Shot? Hopeful New Signs Of Relief For Migraine Sufferers.

“Humans have suffered from migraines for millennia. Yet, despite decades of research, there isn’t a drug on the market today that prevents them by targeting the underlying cause. All of that could change in a few months when the FDA is expected to announce its decision about new therapies that have the potential to turn migraine treatment on its head.

The new therapies are based on research begun in the 1980s showing that people in the throes of a migraine attack have high levels of a protein called calcitonin gene–related peptide (CGRP) in their blood.”

See also New Drugs Could Prevent Migraine Headaches For Some People and the older article What’s Triggering Your Migraine? by David Buchholz of Johns Hopkins University, author of Heal Your Headache.

“Big Brother can make a difference, just not necessarily with the long arm of the law.”

NPR Goats and Soda: 2 Approaches To Ending Smoking: Laws And Labels.

“We hear it from smokers struggling to quit all the time: “If only they’d make it illegal, then I’d have to quit.”

[…] Many countries have been experimenting with anti-tobacco strategies and legislation for years, but of all the efforts — from Orwellian-style bans to smoke-free cars — only a handful seem to have delivered results.

Oddly, making smoking illegal isn’t one of them.”

“Whoa, there’s colors!”

PhyiscsGirl: Can you see this type of light? (YouTube, 9:45min) “Polarized light is an unusual form of light. Can humans see when light is polarized?”

By the way, you can train yourself into seeing the polarization of light. The video mentions staring at a lcd screen for a while and tilting your head to see Haidinger’s brush. You can do the same thing with the sky on a clear day. After practicing this for a bit, you’ll be able to detect the polarization of the sunlight easier and easier.

Auf deutsch heißt das Phänomen übrigens Haidinger-Büschel.