mkwt
@mkwt@lemmy.world
- Comment on Let it sink in. 3 days ago:
Akshully, they would be counting to 11,111. That’s nearly 100,000!
- Comment on They don't cover nuclear war? Pass. 4 days ago:
Just like how Java is “not intended for use in a nuclear facility.” They put it in the long-ass click through agreement, so it’s legally binding.
- Comment on Yes, yes they are 1 week ago:
“You don’t understand; my house ****** is one of the good ones.”
- Comment on Since light cannot pass through a black hole does that mean light has mass? Also why does light form a singularity in a black hole? Is that like a fixed point on a map or something? 1 week ago:
Adding on to this…
The “rest mass” is so important to physicists because it is an invariant quantity under relativistic transformations. Think about kinetic energy. Kinetic energy is a form of energy, and therefore a form of mass. But different observers at different velocities can look at the same object and come up with different kinetic energies for it. But “rest mass,” the mass it would have at rest, is something everyone can agree on.
Finally, as the battery on the scale example demonstrates, photons make their own gravitational field from their energy. Since photons make gravity, they can (theoretically) make black holes. "Kugelblitz" is the name for a black hole that has been composed of only photons.
- Comment on Since light cannot pass through a black hole does that mean light has mass? Also why does light form a singularity in a black hole? Is that like a fixed point on a map or something? 1 week ago:
would require so much energy that it is (for now(?)) impossible to achieve.
It’s not just excessive quantities of regular energy. These schemes all require negative mass-energy or other exotic forms of energy. We have no theory of physics that predicts the existence of these forms of energy, and we don’t know how they would work.
Physicists who write papers about these things use neutral, professional language, like “exotic matter,” to describe this stuff, but it’s really pretty firmly in the realm of magical make believe.
- Comment on How do I deal with children following me around in video games? 1 week ago:
I don’t know anything about it, but it seems like this game might not be equipped with BFG 9000.
- Comment on 1 week ago:
The cat thing was designed to be as absurd as possible to heckle Bohr and Heisenburg.
- Comment on Welcome to the HEV Mark 4 Protective System, for use in hazardous environment conditions. 2 weeks ago:
Except the hazard is coming from the park service Barneys and not from the green water. Don’t panic. HEV Mark IV can handle this.
- Comment on oh bless yer heart, pepperidge farm 'members! 2 weeks ago:
According to this, the charge is vandalism in DC Superior Court. That would be a misdemeanor, carrying less than 1 year in prison.
I wasn’t able to find a case entry in DC Superior Court’s docket system.
- Comment on Molting 2 weeks ago:
⊆
- Comment on If internet means wires, then how come my mobile phone gets connected to the internet ? I'm roaming everywhere with it inside my pocket. 5 weeks ago:
In this specific case, your phone exchanges radio signals with a cell tower, and then the cell tower transfers your data requests onto the wires.
- Comment on I'm just better 5 weeks ago:
Looking at you, China.
- Comment on power generator 1 month ago:
Okay. But did it have one of those steam whistles, like on the old railroad? I feel like it would have done better on the market with a nice choo choo.
- Comment on 1 month ago:
Well see, they do actually have a list that says what everything costs. It’s called the Charge Master List. They just don’t want you to see that list, because they think it puts you at a negotiating disadvantage. It’s the magic invisible hand of the free market, at work to make pricing information available to all in the most efficient manner. (/s)
- Comment on [deleted] 1 month ago:
On the US census, “hispanic” is not a race; it’s an “ethnicity”. So your daughter will be faced with the choice of selecting a “race” and then also choosing “hispanic” or “non-hispanic.” Many other surveys use the same scheme.
How your daughter makes these decisions is up to her. As a social construct, race is what we humans make of it. 100 years ago, Irish and Italians were often not “white.”
- Comment on Put your phones down 2 months ago:
It changed a lot. Even if you ignore the stuff that happened between the king and the emperor, that emperor changed a lot. Massive legal reforms. Upended world order. Etc. Etc.
- Comment on Put your phones down 2 months ago:
Well, for one more moment anyway.
- Comment on Teachers deserve more money. 2 months ago:
There is no reason to have 50 separate curriculums. The ONLY reason that exists is so MAGA states can use the schools to indoctrinate American schoolchildren
That’s not the only reason. There are in fact principles of federalism, and there’s the 10th amendment to the constitution. Educating the public is not one of the 17 enumerated powers granted to Congress in article I. Under the 10th, powers that are not granted to the national government are reserved to the states or to the people.
This is why the national government’s regulation of education is based around carrots in the form of block grants that states apply for. Not enforcement sticks.
- Comment on Nothing is funnier than The Onion taking over Infowars and making rainbow merchandise. 2 months ago:
Apparently finalized a few days ago. But the news was published in The Onion, so you can be forgiven for thinking it might be satire.
- Comment on A long-ass way to write 'not parmesan'. 2 months ago:
That region of origin protection does not extend to the United States.
In the US, “parmesan” can legally be just about any kind of cheese made in any location (mostly Wisconsin), as long as it is aged at least 10 months, and not more than 32% moisture. “Parmigiano Reggiano” and some other specific trademarks are protected terms in the US that mean the same as they do in Europe.
- Comment on Ilhan Omar's office says she's ‘not a millionaire’ after $30M filing revised down to under $100K: report 2 months ago:
She should make more money so she can fire better accountants.
- Comment on Land where 2 months ago:
The capsules can do a water splashdown with parachutes alone.
The capsules that land on land all seem to have some additional system to slow down in addition to the parachute. Boeing Starliner has airbags that deploy around and below the heat shield. Soyuz has a braking rocket system that fires immediately before impact.
- Comment on Wake up sheeple 2 months ago:
It was a three-barreled gun that fired shotgun shells, rifle rounds, and rescue flares. 10 rounds of each type of ammunition were supplied. The stock could be detached and used as a machete.
For a while, these guns were on every Soyuz capsule that docked with ISS, and they were under the operational control of the Soyuz commander. I’ve read that they may have been retired in 2007 because Russia finally ran out of the very unique ammo.
- Comment on Wake up sheeple 2 months ago:
They later said it was less than 1 mile away from the target spot.
A big benefit of the ocean is if the capsule loses all attitude control, it can still reenter and survive. But it will be a “ballistic reentry”, much more punishing with the g forces, and also about 1500 miles short of the target zone.
The Pacific Ocean makes it easy to ensure that those backup contingency landing sites are also safe landing sites.
- Comment on Wake up sheeple 2 months ago:
The Russian system has a braking rocket that fires at the very last second to soften up the landing. On one early Soyuz mission, this rocket didn’t fire, and the solo cosmonaut suffered substantial injuries from the landing.
The Orion capsule hits the water at the final parachute speed of 20-30 mph without injuring the crew. But as you state, they also have to design the capsule for flotation and egress in potentially rough sea state.
Boeing Starliner is designed for a land landing, but it uses deployable air bags instead of a braking rocket. It’s not clear that Starliner will ever fly again after the RCS thruster problems.
- Comment on Lmao 2 months ago:
Whoops! That’s my mistake.
- Comment on Lmao 2 months ago:
“Nightfall”, by Arthur C. Clarke is a short story based on this premise.
Except in the story it’s a complex multiple-star solar system that makes it very rare for all suns to set at once.
- Comment on Control theory 2 months ago:
I highly Python Control Systems Library, python-control on PyPi, as a replacement for the control systems toolbox.
- Comment on Wasted potential. 2 months ago:
“Red dirt” specifically refers to a region straddling the Red River, including parts of Oklahoma and Texas. The soil in the region is actually red. But the musical area is much larger than the geological area.
- Comment on 3 months ago:
The proof is not that ancient. Pi was proven to be irrational in 1761, and proven to be transcendental in 1882.
For a long time the problem was known as “squaring the circle”: Given a circle in a plane, construct a square with the same area using a compass and straightedge. This was a famous unsolved problem in mathematics from antiquity all the way through the renaissance.