Refractive index—the ratio of the speed of electromagnetic radiation in a medium to its speed in a vacuum—can be modulated fast enough to generate photonic time crystals (PTCs) in the near-visible part of the spectrum, ...
Optics & Photonics
Jul 7, 2023
0
1327
Not all nonprofits are created equal—and some exist mainly to capitalize on a tax law loophole that allows them to anonymously funnel donations to political causes. New University of Oregon research proposes an index that ...
Economics & Business
Jul 6, 2023
0
16
Although clouds of smoke appear to be lifting compared to levels seen earlier this week, the Michigan Department of Environment, Great Lakes, and Energy has continued its statewide air quality alert for particulate matter ...
Environment
Jul 3, 2023
0
1
A team of photonics and electronic engineers at Kyoto University has found a way to overcome the shortcomings of photonic-crystal surface-emitting lasers (PCSELs) that have prevented their use in industrial-scale cutting ...
New York City set a record last week for the worst recorded air quality the city has ever seen due to wildfire smoke drifting from Canada. At its peak, the Air Quality Index (AQI) for the city reached 405 out of 500 —the ...
Environment
Jun 13, 2023
0
2
How can you check the air quality in your area and what do the numbers mean?
Environment
Jun 8, 2023
0
6
Researchers have developed a new smaller, lighter design for space-based imaging spectrometers with high spectral resolution. These high-dispersion imaging spectrometers could be used onboard spacecraft or satellites to study ...
Optics & Photonics
May 15, 2023
0
35
Our industrialized society releases many and various pollutants into the world. Combustion in particular produces aerosol mass including black carbon. Although this only accounts for a small percentage of aerosol particles, ...
Environment
May 10, 2023
1
71
With climate change making extreme weather events more frequent and intense, Maryland homeowners are increasingly faced with the threat of costly home damage—from flooded ground floors to unwanted skylights from windblown ...
Environment
May 9, 2023
0
2
Consumer sentiment was essentially unchanged this month, edging up less than two index points from March, according to the University of Michigan Surveys of Consumers.
Social Sciences
Apr 28, 2023
0
8
