FYI you can edit titles on Lemmy

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/drail@fedia.io 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.

The US Department of Energy…

I am not reading your comment, I am simply traveling through it with my eyeballs. Also your comment doesn’t have gold fringe and therefore lacks jurisdiction.

There are free options for federal taxes: https://turbotaxsucksass.org/ (yes that is the real URL, the site was initially created by John Oliver for a Last Week Tonight episode).

What state are you in? Many also offer free options for state taxes.

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.

Idk, it takes some real courage to stand between a parent and their dying kid.

The whole story is wild, and terrible.

He rang the doorbell shortly before 10 p.m. and waited for someone to respond, Merritt said.

“Whoever was inside took a little longer than he anticipated to respond, and so he just waited at the door,” Merritt said, citing a statement Yarl gave to law enforcement investigators from his hospital bed Friday.

“He heard rustling around going on in the house and then finally the door was open,” the attorney said. “And he was confronted by a man who told him, ‘Don’t come back around here,’ and then he immediately fired his weapon.”

Yarl was shot in the head, which cracked his skull and left him with a critical, traumatic brain injury, the attorney said. While the teenager was still on the ground, the homeowner opened fire a second time, striking Yarl in the upper right arm, Merritt said.

And then

Merritt said the teenager saved his own life by fleeing and banging on at least three neighbors’ doors for help.

At the third home, Merritt said, the neighbor told Yarl to lie on the ground and put his hands in the air. He complied and then passed out, the attorney said.

The posted article is from Harvard’s student-run news organization, since it isn’t paywalled and it seems like an appropriate source. Some alternate (paywalled) sources:

NYTimes

WaPo

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.

Hey now.

He’s a pompous, self-righteous felonious piece of shit.

Seriously, he’s done so much good. There’s a nonzero chance that the only thing keeping him alive is his desire to do more to help. For example, Carter has said that he wants to witness the eradication of the Guinea worm,a parasite that he’s been working on stopping for decades.

“I would like to see Guinea worm completely eradicated before I die,” Carter said at a press conference in 2015. “I’d like for the last Guinea worm to die before I do. I think right now we have 11 cases. We started out with 3.6 million cases.”

Jimmy Carter started hospice care back in February.

There’s a !stupidfood@lemmy.world

Not very active, but you can change that!

Where did you hear that? CFCs can linger in the atmosphere for 50-100 years, so recovery is a slow process. It took more than a decade after the Montreal Protocol went into effect before the hole in the ozone layer stopped growing. Additionally, different parts of the ozone layer will recover at different rates:

If current policies remain in place, the ozone layer is expected to recover to 1980 values (before the appearance of the ozone hole) by around 2066 over the Antarctic, by 2045 over the Arctic and by 2040 for the rest of the world. Variations in the size of the Antarctic ozone hole, particularly between 2019 and 2021, were driven largely by meteorological conditions. Nevertheless, the Antarctic ozone hole has been slowly improving in area and depth since the year 2000.

Lots of doom and gloom in the comments here. As the article describes, the hole in the ozone layer varies in size over time. It is slowly recovering, but the annual variability means it sometimes is larger than before.

The variability of the size of the ozone hole is largely determined by the strength of a strong wind band that flows around the Antarctic area. This strong wind band is a direct consequence of Earth’s rotation and the strong temperature differences between polar and moderate latitudes.

If the band of wind is strong, it acts like a barrier: air masses between polar and temperate latitudes can no longer be exchanged. The air masses then remain isolated over the polar latitudes and cool down during the winter.

Although it may be too early to discuss the reasons behind the current ozone concentrations, some researchers speculate that this year’s unusual ozone patterns could be associated with the eruption of the Hunga Tonga-Hunga Ha’apai in January 2022.

And

Claus concludes, “Based on the Montreal Protocol and the decrease of anthropogenic ozone-depleting substances, scientists currently predict that the global ozone layer will reach its normal state again by around 2050.”