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May 15, 2019

BehindTheMedspeak: 6-lead ECG on your iPhone

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Fantastic.

Mobile medicine is coming on fast.

$149 (phone not included).

[via 9to5Mac]

May 15, 2019 at 04:01 PM | Permalink | Comments (0)

Monarch "waterfall"

From Mashable: "Listen to the magical sound of millions of butterflies taking flight at once."

May 15, 2019 at 02:01 PM | Permalink | Comments (0)

Origins of Colors

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From Popular Science:

Most of the hues we look at these days come courtesy of 16,777,216 alphanumeric keys called Hex codes; tinting your technicolor digital life is as simple as copying a string of characters.

But the shades on this page ― and all your off-screen belongings ― come from resources we must conscript to create our chosen chroma.

Affixing color to an object (and making it stick) is tricky business.

For most of human history, we've derived dyes from nature: People cooked plants and animals until they produced the desired pigment, or mined precious minerals from subterranean seams and ground them into paints.

But even once we took to the lab to concoct new colors, some shades remained rarefied. This chart above shows a few of the commodities that tint our kaleidoscopic world ― and how long it took their popularity to fade. 

• Tyrian Purple

Phoenician and Roman emperors loved that this wine-colored dye didn't fade. But making just an ounce meant milking or crushing 250,000 Murex sea snails, which use their tinted mucus to protect eggs and sedate prey.

• Ultramarine

For more than a thousand years, a single region in Afghanistan was the only source of lapis lazuli, the blue rock we refine into ultramarine. Scarcity and a supposed resistance to fading made it as valuable as gold for millennia.

• Imperial Yellow

Only the Chinese emperor and his representatives were allowed this spiritually significant shade. With a simple wood-ash mordant―an oxide that affixes dyes to materials ― the golden foxglove-plant extract easily sticks to silk.

• Mummy

"Dead man’s head" was one part oil, one part amber resin, and too many parts Homo sapiens. It got its brown tint from the flesh, bones, and bandages of well-preserved Egyptian corpses. Fittingly, artists used it for skin tones.

• Scheele's Green

While Carl Wilhelm Scheele worried his lab-derived copper arsenite tincture might be toxic, it was also bright and stable. Companies used it on everything from wallpaper to dresses ― until (and, in some cases, after) people started dying.

• Perkin's Mauve

Chemist William Perkin accidentally invented his eponymous purple while trying to synthesize the malaria treatment quinine from coal tar in 1856. Victorians adored it, but what we call "mauve" today is a more demure shade.

May 15, 2019 at 12:01 PM | Permalink | Comments (1)

Photography from 30 miles away

Arxivcamera

Astonishing progress by Chinese scientists.

The original article is here.

Single-pixel-imaging

More on this rapidly advancing field here.

How long till phones incorporate this tech?

More likely it'll be built into VR/AR eyewear circa 2025.

May 15, 2019 at 10:01 AM | Permalink | Comments (0)

Keisodo Soil Diatomaceous Earth Dish Draining Board

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Got that?

From the website:

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The  Keisodo Soil Diatomaceous Earth Dish Draining Board uses the natural properties of diatomite (diatomaceous earth) to help your dishes and tableware dry faster.

The board has an organic texture that will fit in with almost any kitchen setting.

Place your plates, cups, glasses, and other items on the board after washing them, and let the mat absorb the water that runs off.

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Features and Details:

• Medium: 14" x 11" x 0.3"; 1.6 lbs

• Large: 21" x 11" x 0.3"; 2.5 lbs

• Made in Japan

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$82 (dishes etc. not included).

May 15, 2019 at 08:01 AM | Permalink | Comments (1)

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