Researchers Using Quantum “Squeezed Light” to Image The Insides of Cells
Conventional optical imaging is limited by the process of diffraction, the way light spreads out when it passes an object. The amount of diffraction depends, in part, on natural uncertainties in the position of the photons. Physicists think of this uncertainty as quantum noise.
In recent years, however, they’ve have worked out how to minimise the amount quantum noise by carefully manipulating the way photons are created. They call the resulting photons “squeezed light” and there has been no little excitement over their potential to beat the conventional diffraction limit in all kinds of applications.
One obvious use is in cellular imaging where squeezed light offers biologists a clear advantage for exploring cellular processes. Various groups have used squeezed light to make pioneering measurements inside cells. But the process of imaging to reveal spatial variations in the structure of a cell, has so far eluded them.
My mom just called me over to where she was sitting and excitedly demonstrated that she can brighten and darken her laptop screen - something a coworker showed her how to do today. She was visibly disappointed when I wasn’t impressed.
The achievement is a long-sought step toward harnessing the potential power of such cells to treat diseases. But the discovery raises ethical concerns because it brings researchers closer to cloning humans, and involves creating and then destroying human embryos for research purposes.
Graphic Source: Mitalipov Lab/OHSUGraphic
Credit: Adapted for NPR by Alyson Hurt
Marisa can attest that this is almost the only thing I’ve consistently talked about for the past 4 years, and she even made fun of me for it publicly in the yearbook.
I was walking around the historic district of Savannah with my cell phone, and as I was about to pass by a perfectly pleasant female individual, she asked me what time it was. I froze.
Thankfully I am fully aware, via fourteen years of private school - and after viewing number of informative videos during that time - that unquestionably and with complete consistency, the only instance in which you will be asked for the time is as a means of distraction so that someone can rape you. No, it won’t happen at a party. It won’t happen walking down a dark alley at night. It won’t happen through an individual’s disregard for consent. But watch out when you are: a) in a public place and b) subsequently asked for the time.
I knew the grave danger I was in. Calmly, I held one hand out in front of me, raised my cell to eye level, read the time from the screen, returned my eyes to hers, and with a smile, wished her a good day as I fled.
“I really like your idea. If we had guns that shot chocolate, not only would our country be safer, it would be happier. People love chocolate. You are a good boy.”
Joe Biden wins at constituent services. This letter, to a Wisconsin second-grader, is so sweet and sad and just right.
Oh this is so fantastic. Joe Biden is pretty good at things.
The way Texans speak, from using words like “y’all” to that old Texas twang, is iconic in American culture. But linguists say the twang is fading â and that, in a few decades, “talking Texan” may sound quite different than it does today.
Don’t let that twang die! Say cee-ment and UM-brella. Accents are part of our national charm. See also.
This is the saddest thing I’ve read all day.