Astronomers used radio waves to study conditions in the vicinity of Proxima Centauri, the nearest star to our sun. The results suggest Proxima’s 2 known planets are likely bathed in intense radiation from this star, casting doubt on the planets’ potential for life. Source: https://earthsky.org/space/proxima-centauri-space-weather-planets-uninhabitable…
Tag: sunglasses
Transparent Solar Panels For Windows Hit Record 8% Efficiency
Bodhammer shares a report from the University of Michigan: In a step closer to skyscrapers that serve as power sources, a team led by University of Michigan researchers has set a new efficiency record for color-neutral, transparent solar cells. The team achieved 8.1% efficiency and 43.3% transparency with an organic, or carbon-based, design rather than conventional silicon. While the cells have…
Not a rainbow, not an iridescent cloud
There are many colored arcs in the sky. This photographer captured one commonly seen in summer, when the sun is high in the sky. Source: https://earthsky.org/todays-image/photo-circumhorizon-arc-new-mexico-august-2020…
Google is Quietly Experimenting With Holographic Glasses and Smart Tattoos
A simple pair of sunglasses that projects holographic icons. A smartwatch that has a digital screen but analog hands. A temporary tattoo that, when applied to your skin, transforms your body into a living touchpad. A virtual reality controller that lets you pick up objects in digital worlds and feel their weight as you swing them around. Those are some of…
Inferring the temperature structure of circumstellar disks from polarized emission
Polarized light is a familiar phenomenon because the scattering or reflection of light results in one of its two components being preferentially absorbed. The majority of sunlight on Earth, for example, is preferentially polarized due to scattering in the atmosphere (this helps make polarized sunglasses effective). Electromagnetic radiation from astrophysical sources can also be polarized, typically because of scattering from elongated…
This brown dwarf might look a lot like Jupiter
The cloud bands on brown dwarf Luhman 16A were found via instruments known as polarimeters. An astronomer said they’re like “… an astronomer’s polarized sunglasses. But instead of trying to block out that glare, we’re trying to measure it.” Source: https://earthsky.org/space/brown-dwarfs-banded-clouds-luhman-16a-vlt…
Chinese Facial Recognition Firm Says It Can Now Identify People Wearing Masks
Hanwang Technology, a Chinese firm specializing in facial recognition software, says it can now identify people that are wearing masks to protect against the coronavirus. The company says it used a sample database of around 6 million unmasked faces and a smaller database of masked faces to create the system. The Next Web reports: The Beijing-based firm, which also goes by…