There’s no way to make a backdoor for encryption that keeps the encryption secure. Politicians and government flunkies can’t seem to wrap their pea brains around that concept.
The asphalt pavement of roads must be 4 inches thick to last forever. 3 inches lasts 5 years, 2 inches lasts one year, 1 inch is crumbling before you finish. You constantly see crumbling roads in the third world because of corruption, they don’t put as much pavement down as they charge for.
Now that’s a concrete fact
An asphalt fact, rather. Asphalt facts have lower modulus, so they are more adaptable to the point of the conversation.
Mitigating actions are celebrated, while preventative measures are ignored, or even mocked as unnecessary.
Hundreds of years of burning coal has spread mercury compounds all over the land, so that quite often when they build a new dam for hydroelectric power it’s dissolved into the water and ends up concentrated in fishes that people eat.
also its organic mecury, which is more toxic than the metallic form.
I dunno man, sounds fucking woke to me
its all big alchemy immortals trying to keep mercury’s benefits under wraps
I KNEW Qin Shi Huang was still around, fucking us from the past!
The “magical formula” for stairs.
If this rule isn’t followed when building stairs, then it feels uncomfortable and more accidents will actually happen there.
In easy terms, it says: 2x riser + tread = average step lenght, usually 63cm.
Oh man I hate it when stairs are not built to the proper ratio. It feels so weird.
I come from a family of carpenters, building all kinds of stairs for most of my life, and I’ve never heard of this. This is why I love construction; learn something new all the time. Thanks!
I’m curious how this compares to eras before this formula was normalized and if this is universal or more so just a matter of keeping things the same so people get used to them.
Visit any old city in the UK (York and Edinburgh for example) and a lot of passages between streets have steps with uneven heights.
When you’re expecting it, its fine, you take extra care. But when its a modern building and they’ve fucked it up you really notice
[it’s] a modern building and they’ve fucked it up you really notice
How about the stairs leading up from a subway stop?
I know of a few cases in religious buildings where stairs were designed to have a mystical effect. In Angkor Wat, for example, the stairs have a steep and tall tread pattern. Commoners weren’t used to them so they’d be exhausted, but the local monks were used to them so they could ascend and descend with ease.
I guess in China the number is smaller because the average people are smaller. Otherwise it is universal. It has been found out, not made up arbitrarily.
The longevity of concrete isn’t just tied to the cylinder break strength.
Also, concrete with certain aggregates end up creating silica gel, which is bad for concrete.
This is indeed a concrete technical fact!
Well, played, my friend, well played.
Got to make sure I’m providing what OP wants.
Which aggregates?
What are some other tests you can use to decide which concrete is best for you?
Aggregates with a lot of unstable silica like strained quartz can cause the creation of silica gel when exposed to cement. The aggregate supplier should be the one running tests to prove they don’t have reactive silica.
Other tests include air entrainment and the slump test. The concrete mix requirements should be chosen by the engineer or architect.
Good to know, thank you!
You need to test your restore procedure all the way through & periodically to have confidence in your backups
In german and english, the comma in numbers is swapped. So the number 123.45 in german would be written as 123,45 while ironically, the thing that we used to separate thousands from hundreds is also swapped. So one-thousand-four-hundred would be written as 1,400 in english but as 1.400 in german …
There are many European mechanisms that make more sense to me, like aluminum being “alumINIUM”, as with many other elements.
But periods in the middle of numbers always felt wrong to me. We already have structures for sentences that pause, then eventually close a thought: “Billy played with Susie, and her dog. Cute!” Not “Billy played with Susie. and her dog, Cute!”
On top of that, you would pronounce 678 as six-hundred-seven-ty-eight in english … guess what it is in german:
Sechs-hundert-acht-und-sieb-zig (literally six-hundred-eight-and-seven-ty)
i’m actually trying to change this point specifically because it irks me … but i am sadly alone with it.
But French has a number problem four twenty ten nine times worse.
This is soo nineties!
By the way, it’s absolutely not just Germany that does it the other way:
https://en.wikipedia.org/wiki/Decimal_separator#Conventions_worldwide
And even more fun is that some German speaking countries do it like the US. Like Switzerland for example…
It’s 1’400 in german.
Ah yes, one foot four hundred inches. /s
oh interesting, this is the first time that i see this. but it kinda makes sense, thanks.
Unser Weg ist der richtige! 😜
The borders between countries in the Middle East including India/Pakistan were deliberately drawn to cause conflict. Of course when that conflict started to come back home everyone was shocked pikachu faced about it. I really don’t understand why people of those countries don’t just throw away the map and sort it out amongst themselves like adults, but I guess expecting world leaders of a majority of countries to act like adults is a bit much to ask most of the time.
kashmere, and northern india/bordering china. one wants the whole terrority the other wants the same, a pretense to expand later on.
An example from my field of expertise: Mixing different kinds of metals in wet environments causes the less noble one to corrode.
The phrase “sacrificial anode” comes to mind
That reminds me, I need to get a new one for my hot water tank. I’ve lived here 6 years, you’re supposed to change them around 5.
It can be the difference between a water heater lasting 7 years and lasting 30.
Wait, that’s a thing?
If it is, then my 10 yr old hot water heater isn’t happy.
Yup, they stop your tank from rusting out. If you replace them regularly your tank will last virtually forever. If you don’t, you’ll be replacing the water tank before too long. A sacrificial anode costs around $50 bucks or so, a tank costs a lot more.
Here’s a video showing you how to do it. It’s not very hard at all. https://www.thisoldhouse.com/heating-cooling-2/how-to-replace-an-anode-rod-on-a-water-heater
Well shit.
Yeah. The worst part is that a lot of engineers and technicians don’t fully understand galvanic corrosion when specifying how to attach two different metals together.
Microwaves can cause water to become super heated and explosive upon touch.
This includes things that are mostly water, like uncracked raw eggs.
Even cracked raw eggs can be volatile if you don’t scramble them.
The people designing and building large machinery and cars dont ever have to maintain them
Among many other reasons, the biggest reason for me that the US stock market cannot be trusted is because market makers combine 3 techniques to create fraud and push risk to others to dilute unwitting companies and investors: borrow stocks, selling a borrowed stock to buy later, strategically failing to deliver stock.
Borrowing stocks doesn’t create a clean paper trail, can be done repeatedly, and steals shareholder votes.
Selling a borrowed stock to buy later can strategically intend to fail from the start where they don’t even have to locate (not even acquire as you might assume) a share to borrow, effectively creating new shares out of thin air. Market makers in the US can legally do this, even for the benefit of their hedge fund counterparts (sometimes under the same company).
Fails for stock delivery are allowed, so they’re a strategy. Cash in lieu is not the same as share ownership. Cash is fungible, stocks are not, and this gap can create technically infinite risk.
Your infinite risk is my infinite gain 🍌
Nah, the stock markets were fixed in 2008!
They created dark pools.
But in seriousness this unrealistic playground should be completely separated from real economics and fucks everything up.
Concrete being called cement.
I don’t see how that creates any issues
The workers at the jobsite are going to have an issue when they’ve showed up to pour a slab and your cement order arrives.
It’s like expecting dough and receiving a bag of flour.
I understand this anology.
i’m not sure why that is weird … aren’t they the same thing?
Cement is only the binding agent that makes it harden. Concrete is made from sand/gravel, water and cement (+ additives).
