Because the US doesn’t have a federal identification card. At the state level you can use the id number of someone’s drivers license or state id for identifying them, which is marginally better since it changes with new id cards.
SSNs weren’t intended to be used for identification, but since there’s no other national option they effectively are.
I don’t know what to call them, kind of an in between between what you would call fast food and what you would expect from a “slow” fancier restaurant
Fast casual? Typical chains considered to be “fast casual” are Chipotle and Five Guys. A local taco/burrito/burger/sandwich place would probably fall in that category.
It’s $4 per pound of bricks.
Accepted:
Not currently accepted:
The NYTimes has an article about it here.
“It absolutely could be showing the displacement of air due to a projectile,” Mr. Harrigan said in an interview on Saturday night after reviewing the high-resolution images that Mr. Mills filed from the rally. “The angle seems a bit low to have passed through his ear, but not impossible if the gunman fired multiple rounds.”
Simple ballistic math showed that capturing a bullet as Mr. Mills likely did in a photo was possible, Mr. Harrigan said.
Mr. Mills was using a Sony digital camera capable of capturing images at up to 30 frames per second. He took these photos with a shutter speed of 1/8,000th of a second — extremely fast by industry standards.
…
“If the gunman was firing an AR-15-style rifle, the .223-caliber or 5.56-millimeter bullets they use travel at roughly 3,200 feet per second when they leave the weapon’s muzzle,’’ Mr. Harrigan said. “And with a 1/8,000th of a second shutter speed, this would allow the bullet to travel approximately four-tenths of a foot while the shutter is open.”
There absolutely are, but I’m not super familiar with all of the consequences of majorana neutrinos. /u/[email protected] might be able to provide a better answer. My background is experimental nuclear physics, so I’m familiar a lot of experiments searching for beyond the standard model physics, but less so with the theory motivation.
One consequence of neutrinos being their own antiparticles is that it breaks lepton number conservation. This also breaks chiral symmetry, since all neutrinos are right-handed and anti-neutrinos are left-handed. This observation would also imply that neutrinos have mass - which is assumed but would be a really big deal to prove.
Yeah it’s one of those terms that’s unfortunately been co-opted for another definition. Definitely made some of my google searches in grad school feel icky… The physics terminology came first though!
Despite space being “empty” there’s still a surprising amount of stuff streaming through it. There are protons, electrons, carbon nuclei, etc constantly slamming into the Earth’s atmosphere, producing showers of radiation. These cosmic rays are the reason so many sensitive physics experiments ( like dark matter and neutrinoless double beta decay searches) are located deep underground. The earth is a good shield against these cosmic backgrounds.
Even if there was an “isolated” antimatter galaxy, it would get bombarded with matter in the form of cosmic rays. The annihilation photons are a really distinct signal that would be hard to miss. There are a number of gamma ray telescopes in space that map out sources of gammas, and they would have detected an antimatter galaxy if it existed.
If the antimatter galaxies are so far away that they’re beyond the visible universe, then there’s still the big question of why there was a segregation of matter and antimatter early on.
You’re not alone; matter-antimatter asymmetry is one of the big open questions in physics. Most particle processes treat matter and antimatter identically, but there are a few areas where matter and antimatter have slightly different interactions. These occurrences are violations of Charge Parity symmetry aka CP Violation.
There must have been a certain amount of CP violation during the early phases of the Big Bang to explain our matter-dominated universe. But the known amounts of CP Violation are nowhere near enough to explain the asymmetry in matter and antimatter. There are some proposed mechanisms that would violate CP symmetry in sufficient quantities, but these haven’t been experimentally observed. There are ongoing searches to detect these processes, or related processes that would be possible if these existed. Neutrinoless double beta decay searches are one example of these detection efforts.
In summary, there’s a guaranteed Nobel Prize to whoever can answer your question.
It used to be owned by The Onion, but it’s since become its own thing. But it’s basically if The Onion was clickbait/buzzfeed.
A new kiln design and the first attempts at forging - Primitive Technology is making progress towards achieving the Iron Age from scratch!
As always, turn on closed captions for the complete experience. This video in particular had a lot of info in the captions.
The latest Map Men video is a bit light on the maps (there’s basically only one) but is still a fascinating look at how top level domains came to exist and not match the physical world.
Their previous video, Internet Vs Ocean: the essential wires we never think about, is a good companion piece that describes the network of undersea cables that carry the internet across oceans.
There’s a [email protected]
Not very active, but you can change that!
If they need to raise prices by 18% to pay their workers, then they need to actually raise the prices on the menu. Right now this is just bait and switch, it’s dishonest and possibly illegal depending on the location.
Nah, that was ARPANET. The internet (www) was invented because particle physicists were too lazy to carry magnetic tapes with experimental data around CERN.
Losing weight.
It really is as simple as making sure that Calories In < Calories Out. Reduce caloric intake through dietary changes and increase exercise. But in practice it can be difficult to maintain both of these consistently.
Always a good day when a new Primitive Technology video drops! This video continues the series of alternate kiln designs, with the latest design not requiring active blowing (I suspect after firing hundreds of clay pieces someone might be getting tired of spinning a fan for hours on end).
As always, turn on captions for the complete experience.
It’s important to read the full quote from Rivian’s CEO before complaining about $75k electric trucks:
“I think the reality of buying a combustion-powered vehicle … is sort of like building a horse barn in 1910,” he said. “Imagine buying a Chevy Suburban in 2030 … what are you going to do with that … in 10 years?”
He’s comparing buying a Rivian truck with buying a Suburban, which has a base price of $57k for the lowest tier configuration (LS) and a $76k price on the High Country configuration.
Ah, TIL. Thanks!