Graduate students Kevin Miao, Chris Anderson, and Alexandre Bourassa monitor quantum experiments at the Pritzker School of Molecular Engineering
Scientists at the University of Chicago’s Pritzker School of Molecular Engineering have found a way to produce quantum states in ordinary, everyday electronics. By harnessing the properties of quantum mechanics without exotic materials or equipment, this raises the possibility that quantum information technologies can be created using current devices.
For decades, the computer industry has benefited from Moore’s law, which is a rule of thumb that predicts that the number of transistors on an integrated circuit will double about every two years. As this has held up, computers have gone from giant machines that were part of the buildings that housed them to tiny devices that can fit on a thumbnail, yet can outperform any supercomputer from previous generations.
The tech industry is producing a rising din. Our bodies can’t adapt.
Karthic thallikar first noticed the noise sometime in late 2014, back when he still enjoyed taking walks around his neighborhood.
He’d been living with his wife and two kids in the Brittany Heights subdivision in Chandler, Arizona, for two years by then, in a taupe two-story house that Thallikar had fallen in love with on his first visit. The double-height ceilings made it seem airy and expansive; there was a playground around the corner; and the neighbors were friendly, educated people who worked in auto finance or at Intel or at the local high school. Thallikar loved that he could stand in the driveway, look out past a hayfield and the desert scrub of Gila River Indian land, and see the jagged pink outlines of the Estrella Mountains. Until recently, the area around Brittany Heights had been mostly farmland, and there remained a patchwork of alfalfa fields alongside open ranges scruffy with mesquite and coyotes.
In the evenings, after work, Thallikar liked to decompress by taking long walks around Brittany Heights, following Musket Way to Carriage Lane to Marlin Drive almost as far as the San Palacio and Clemente Ranch housing developments. It was during one of these strolls that Thallikar first became aware of a low, monotone hum, like a blender whirring somewhere in the distance. It was irritating, but he wrote it off. Someone’s pool pump, probably. On another walk a few days later, he heard it again. A carpet-cleaning machine? he wondered. A few nights later, there it was again. It sounded a bit like warped music from some far-off party, but there was no thump or rhythm to the sound. Just one single, persistent note: EHHNNNNNNNN. Evening after evening, he realized, the sound was there—every night, on every street. The whine became a constant, annoying soundtrack to his walks.
Living in a city has plenty of perks. You have convenient metro systems, plenty of gourmet dining choices and endless shopping destinations. But with all that activity comes a whole lot of noise pollution. The noise is an unavoidable side effect of living with millions of other people. That noise is likely to permeate your living space unless you’ve gone through the trouble of retrofitting your home with some kind of soundproofing. (Video)
Driving a convertible exposes drivers and passengers to dangerous noise levels.
Driving a convertible with the top down could expose you to dangerous noise levels on a par with a building site, claims a new study. Levels as high as 100 decibels were recorded at speeds of 75mph which for long periods could lead to damage to hearing.