This is the same WaPo columnist who wrote Democrats weaponizing flags to intimidate Alito is an embarrassment

So maaayyybe she doesn’t have the best judgment.

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.

Nah it’s developed by a different person. I believe the developer of Memmy said that voyager was his favorite alternative and recommended people switch to it when they had issues with Memmy.

If I were a woman I’d never have sex again with a man

Many of these states don’t have an exception for rape. So the only choice women get is whether or not they live in the state.

The Onion has been going hard on Kissinger, deservedly so.

Americans React To The Death Of Henry Kissinger

“He put Cambodia on the map and almost took it off.”

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.

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.”

Seek by iNaturalist

The app uses AI to identify the species of plants, animals, insects and fungi. In video mode you scan around something you want to ID as the AI narrows it down to the species. Then you can take a pic. The app keeps track of each unique species you’ve found (along with your photo of it). There’s also badges and achievements for identifying different numbers of species, if you want to gamify your nature sightseeing.

It’s basically real life Pokémon. Oh and it’s completely free.

Considering that the interim speaker’s only job is to hold votes on the election of a new house speaker, and that no other house business can continue until a new speaker is chosen, this is clearly a petty, political move.

Agreed, while the subject is interesting the data itself isn’t presented in a particularly nice way.

With betavoltaics it’s more a matter of physics than lack of engineering refinement. Even assuming 100% efficiency, you would need something like 250 gallons (1000 liters) of tritium gas at atmospheric pressure to power a 100 Watt lightbulb.

Nuclear reactors, however, absolutely should be supplying a larger fraction of our electrical grid. Traditional, large reactor facilities have such a high cost and long timescale for permitting/construction that it’s difficult to get newer, more modern reactors built in the US. There are some exciting developments in small, modular reactors that would sidestep these issues. I believe a few designs are in the process of being built for full scale testing.

www.charitynavigator.org

If you’re interested in a particular charity organization, you can look them up on Charity Navigator. They pull information from the charity’s IRS filings as well as their website to rate various aspects. They give a breakdown of things like the fraction of funds spent on administrative costs, privacy policies, fundraising efficiency, etc.

They also provide the contact information and website for the charity. This way you know you’re donating to the actual charity and not a scammer impersonating them.

Betavoltaic devices are exactly what you’re describing. They convert beta radiation (energetic electrons) into electricity in the same way that photovoltaic cells (solar panels) convert photons into electricity. You can create a nuclear battery by putting some radioactive material that decays via beta emission in one of these.

The downside of these devices is that they generate very little power. It takes a dangerous amount of radioactive material to generate the power needed for say a phone or laptop. Commercial betavoltaic devices generate ~tens of microwatts. They’re useful if you need a low power battery somewhere that you don’t want to replace, like in a remote sensor.

Go to the /c/nostupidquestions page in a browser: https://lemmy.world/c/nostupidquestions

Near the top left, just under the community name is a label that says “Sidebar” with a little plus symbol to the right of it. Click this an it expands out, listing the community rules and a bunch of other info. At the very bottom of the expanded region is the list of mods. Just above that is a link labeled “Modlog”.

If you are using a mobile app or the mobile version of the site (m.lemmy.world) then you may not be able to do this.

Assuming you’re using a browser, on the main community page, expand the sidebar. The modlog is linked at the bottom, just above the list of mods. Here’s the modlog for /c/nostupidquestions

Yeesh, you guys have been working on this app for less than 2 months and already a few of your users have developed a serious sense of entitlement.

Take it as a compliment, you’ve set an insanely high bar with Memmy - both in terms of its current state and the speed at which you made it. Please keep up the good work, and don’t let a few overly dramatic critics ruin it for you. They definitely don’t speak for the majority of your users.