⚫ How The Black Point Message Crashes Android Apps

“_If you touch the👇black point then your whatsapp will hang_”, says the message that’s being sent around, and it’s right. It’s a text rendering bug, the same as many others — which isn’t interesting. But the characters it’s using, Unicode RTL and LTR marks, are worth knowing about.

Thanks to everyone who suggested this subject!

The Unicode Bidirectional Algorithm: http://unicode.org/reports/tr9/

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10 Places Science Can’t Explain

Some of our planet’s most mysterious places seem to defy the laws of science. Here are some of such.
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The devil’s kettle waterfall is believed by some to be a gateway to another universe or even to hell itself. The two streamed waterfall has baffled geologists for decades as no one can work out where the water flowing into the kettle leads. It’s as if it simply disappears. But that’s not the only mysterious water structure. In the amazon river is now known to be a boiling river hot enough to kill any creature to fall into it. It was thought nothing more than a myth until it’s recent discovery and no one knows why the water is hot enough to boil.

In India stands a small village known for having a high twin rate. It’s obvious why the settlement is now known as twin town but less obvious why so many twins are born here. Suggested answers include the claim that government experiments secretly changed the genetics of locals decades ago.

Perhaps the most mysterious location is the zone of silence in Mexico, a place known for magnetic phenomena and as a dead zone for radio. You will receive no radio signal while in the zone and don’t expect your compass to be reliable. Also watch out for mutated animals or strange alien like figures – those are never a good sign.

Channel: Eskify
Published: 2018-03-06 19:17:36
Duration: 9M6S
Views: 4199582
Likes: 24484
Favorites: 0

G-Force, Jerk, and Passing Out In A Centrifuge

Thanks to the Starrship team for arranging this! I’m also over on their channel, flying with the Blades: https://www.youtube.com/watch?v=iWY3-1gOrxk • At the Royal Air Force training centrifuge in Farnbrough, pilots learn how to avoid G-LOC: g-induced loss of consciousness. Let’s talk about g-force, about jerk, and about how to keep circulation flowing to your brain.

FAQs:

* Isn’t 3.6g a really low g-tolerance? *
Yep. Turns out I would not qualify to be a fighter pilot. The average range for g-tolerance is 4-6; no-one was expecting me to pass out. The centrifuge team do not deliberately try to G-LOC people! To be fair, though, I’d done a few earlier runs with only minor effects.

* What g was the RAF person at the start pulling? *
That’s Marcus, from the Starrship team, and he was successfully pulling 6.5g with the help of g-trousers: they plug into a compressed air source in the plane (and in the centrifuge) and act as a lower-body tourniquet to keep the blood up top. They are very effective.

* Why did you shake and shudder when regaining consciousness? *
Those are called “myoclonic convulsions”, which is a fancy medical term for “muscle jerks”, and they’re a common side effect of recovering from G-LOC.

* What did it feel like? *
I’ll answer this in more detail in a video over on the Matt and Tom channel soon, but in short: I don’t remember it. I was doing the breathing maneuver, then everything was wobbly, then we were stopped!

* Is this a sponsored video? *
No: the RAF and Starrship had no editorial control over this, and no money changed hands. Obviously, though, they gave me a spin in the centrifuge, and I’m collaborating with them over on their channel too!

THANKS TO:
The RAF Centre of Aviation Medicine, the Starrship team, and the folks at Qinetiq.

STARRSHIP:
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I’m at http://tomscott.com
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Channel: Tom Scott
Published: 2018-04-14 19:47:54
Duration: 4M49S
Views: 1030204
Likes: 26938
Favorites: 0

Not Everyone Should Code

First 500 people will get 2 months of Skillshare free: https://skl.sh/polymatter4

Patreon: https://www.patreon.com/polymatter
Twitter: https://twitter.com/polymatters

It’s become popular to encourage anyone and everyone to code. But there simply won’t be unlimited demand for the skill, nor will everyone actually enjoy it.

Credits
Music is Sunrise Drive, South London HiFi

Humans Need Not Apply: https://www.youtube.com/watch?v=7Pq-S557XQU (Seriously, watch it)

College price graph: https://priceonomics.com/the-supersizing-of-american-colleges/

Catan wheat image inspired by: https://www.pinterest.com/offsite/?token=164-251&url=https%3A%2F%2Fsociety6.com%2Fproduct%2Feconomics-a3k_rug%2336%3D288&pin=417357090448427974

VHS fast forward effect modified from https://www.youtube.com/watch?v=s_auAhu-91U

Channel: PolyMatter
Published: 2018-04-20 14:48:35
Duration: 8M47S
Views: 593443
Likes: 23559
Favorites: 0

Making Artificial Earthquakes with a Four-Tonne Steel Ball

In Gottingen, Germany, there’s a four-tonne steel ball that can be raised up a 14-metre tower — and then dropped in less than two seconds, crashing back to earth. It makes tiny, artificial earthquakes: here’s why.

Thanks to all the team at Wiechert’sche Erdbebenwarte Gottingen! You can find out more about them here: https://www.erdbebenwarte.de/

Three things I had to cut out of this video, because they didn’t quite fit into the story or because I couldn’t film them:

The reason the steel ball survived two world wars is because the university’s records listed it by use as a “rock-ball”, not by composition as a “steel ball” – so no-one melted it down for weaponry.

The observatory team refill that pit every year to make the ground flat, and the ball just digs a hole again. The rock’s just being compressed underneath. They joke that, somewhere in Australia, there’s a slowly growing hill…

And finally, the ground steams for a little while after the ball hits: it gets rather warm…

Edited by Michelle Martin (@mrsmmartin)

I’m at http://tomscott.com
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Channel: Tom Scott
Published: 2018-02-03 20:12:09
Duration: 3M34S
Views: 593699
Likes: 15215
Favorites: 0

Why are the Boeing 737NG engines FLAT?

Have you ever noticed that the lower part of the Boeing 737NG engines appear flat? What is the reason for this and a few more interesting details will be covered in todays video.
Enjoy!

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Channel: Mentour Pilot
Published: 2018-02-22 11:42:40
Duration: 7M57S
Views: 1604983
Likes: 32325
Favorites: 0

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