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Vizio works on making its 4K TVs even better in 2019

Engadget

While many other manufacturers chase new technology with 8K and HDMI 2.1, Vizio is enhancing its 4K TV lineup, starting from the lower-priced V series all the way up to its top-of-the-line P-Series Quantum X. The V series steps in where Vizio's E line of TVs used to reside, with smart TV features, Dolby Vision HDR and up to 16 zones of local dimming, with models ranging from 40- to 75-inches. The number of dimming zones and peak brightness -- crucial for precise backlighting with proper contrast and vivid colors -- goes up as you proceed across the lines and increase the prices. This year's M-Series features up to 90 zones (double that of last year's M-Series) and 600 nits of peak brightness, while also adding the "quantum color" technology previously reserved for the higher-end P-Series, all in sizes between 43- and 65-inches. Speaking of the P-Series Quantum lineup, that covers 65- and 75-inch TVs (plus an 85-inch prototype that the company wouldn't commit to) with up to 480 local dimming zones, while the P-Series Quantum X feature the highest brightness rating of the group with "UltraBright 2900" that Vizio claims elevates Dolby Vision to a new level, plus a slick bezel-less design.


Just thinking about bright objects changes the size of your pupils

New Scientist

The eyes could be the windows to the mind, if not the soul. It turns out that simply thinking about a bright light is enough to change the size of our pupils, even if there isn't anything real for our eyes to react to. Our pupils get bigger, or dilate, in dark conditions in order to let more light into our eyes. The reverse happens in bright conditions, which cause our pupils to contract. A team led by Nahid Zokaei at the University of Oxford, UK looked at whether thinking about brightness could alter people's pupils.



A star has been seen exploding faster than any other on record

New Scientist

The quickest supernova we've ever seen went from invisible to extraordinarily bright in only 2.2 days. It is the first of these speedy stellar explosions that's been observed thoroughly enough to help us figure out exactly how they work. Supernovae are massive explosions that happen when a star burns out. They usually take weeks or months after the death of the star to reach maximum brightness, and even longer to fade away. But Armin Rest at the Space Telescope Science Institute in Baltimore, Maryland and his colleagues found one in data from the Kepler Space Telescope that rose to peak brightness in less than 53 hours and faded back to half that brightness in 6.8 days.


Battery at 2%? Here's how to extend it as long as possible

USATODAY - Tech Top Stories

Your phone's display puts a ton of stress on the battery, so if you're trying to squeeze as many minutes as possible out of a fading charge, the first thing you should do is manually set its brightness to the lowest level you're willing to put up with. You might have to strain your eyes to see what's happening on your screen (and don't even think about being able to see video content) but lowering the brightness of your display is the quickest and most effective way to preserve battery life.