Can a person drown in quicksand? Detailed answer

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Can a person drown in quicksand? Detailed answer

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Can a person drown in quicksand?

To pull a leg out of quicksand at a speed of 0,1 m/s, you need to apply a force similar to that of lifting a medium-sized passenger car. However, being a non-Newtonian fluid, quicksand cannot swallow a person whole. The death of the bogged down is caused by other causes, such as dehydration, hot flashes, or sun exposure. If you get into quicksand, it is better not to make sudden movements, but try to lie on your back and, arms outstretched, wait for help.

Authors: Jimmy Wales, Larry Sanger

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The border between which states runs right in the middle of the negotiating table?

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4K display with ultra-wide color gamut 03.06.2015

NHK (Science & Technology Research Laboratories, STRL) has created a 50-inch 4K liquid crystal display with a record wide color gamut, that is, capable of displaying the maximum number of shades. It uses a laser LED backlight in three primary colors.

When creating a display in STRL, the goal was to get a device capable of displaying the colors of the space defined by the ITU-R Recommendation BT.2020 specification. The BT.2020 standard for 4K and 8K displays was developed with the active participation of NHK.

The BT.2020 color space is approximately 70% wider than ITU-R Recommendation BT.709, standardized high-definition television, and wider than Adobe RGB and NTSC. So far, it has not been possible to create a display that covers it completely, even using OLED and quantum dot technologies. Note that the display in question also does not fully cover BT.2020, but is close to it - coverage is 98%.

When comparing the new display to displays spanning the BT.709 space, STRL says the difference is visible in green, cyan, and green-blue hues.

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