I can download the app and test a few things tomorrow. Maybe when the server is rebooted it logs users out for some reason. I am not sure.

Do you have accounts in other servers that do not get disconnected?

Awesome! The one with the sustained source loop is my favorite:

Also, the one that shoots out flames paints a picture similar to how a synchrotron behaves, shooting out X-rays into the beamlines as the electron bunches move around.

Upon looking into it closer, the synchrotron is a bit of a mixture of those two concepts - the source loop (booster ring) that is fed by the linear accelerator, and then the larger loop (storage room) that feeds X-rays the beamlines. Of course, many details differ, but still it is interesting to notice the similarities !

Very nice article! Thanks :D

Ah, I see what you mean.

The experiment showed that the CO2 gas was an efficient absorber of some form of radiant energy that came from the sun. We now know that this energy is infrared radiation. This radiation is emitted by hot bodies, and the sun emits a lot of it.

But yes, you are correct in that her experiment was not about the greenhouse effect itself - which includes more complicated interactions such as the reflection and emission of IR from the earth’s surface. But, still, the absorption of IR by CO2 is a very important component. And her observations - using the sun as the source of the infrared - is also a very relevant observation. This is because:

• Infrared light can carry heat energy from one hot body to another
• A large amount of the heat transfer from the sun to the earth comes in the form of infrared light
• CO2, which is present in the atmosphere in a significant amount, is a strong absorber of infrared light

So I don’t think her work is irrelevant. It is very relevant. But I do think that the title “Scientists understood physics of climate change” is stretched because this experiment by itself is not enough to describe all of the complexity of the green house effect and climate change.

If carbon dioxide (CO2) simply absorbed energy, including sunlight, without re-emitting it, it could lead to cooling at the Earth’s surface. This is because the absorbed energy would not be radiated back to the surface, resulting in a net loss of energy from the Earth-atmosphere system.

Hmm, I don’t follow the argument. If the CO2 and other atmospheric molecules were unable to re-emit the light, they would need to dissipate the excess energy via non-radiative processes. So the main transfer of energy to the surroundings would be via collisions with other molecules. The density of molecules is greater as you approach the surface, and the density in space is very very low. So there are many more molecules to collide with that move the energy in the direction of the surface, and there is no easy pathway to get the heat out of the earth, other than hot molecules diffusing into space.

So, unless there is an important hole in my reasoning, removing the radiative pathway would ultimately result in a hotter earth because a larger percentage of the energy of light is trapped.

I think that the main problem in your comment is that it does not account for what happens to the energy that is absorbed. This energy does not disappear - you need to account for it.

Am I missing anything that makes this a horrible or unacceptably risky idea?

Yes, I am not 100℅ sure, but I think debt collectors. My little understanding is that the bank may not want to go through the hassle of sorting this out themselves if the debt is small and the applicable laws complex, in which case they can sell the debt to a debt collector. Whatever person or agency is motivated enough to buy that debt might have some good experience in getting paid back. They can annoy your family for a while, and they might know of some laws that they can use to put pressure.

From the title I thought that the UV opsin itself was also performing the pressure sensing function… Which would be fascinating to me, as I have worked with viscosity and pressure-sensitive fluorophores in the past (BODIPYs and DCDHF), and I would love to see living things making use of this molecular sensor design.

But I now see that it is a different molecular sensor that is also present in the UV sensing cell:

Our results indicate that the ciliary opsin required for detecting UV light is not essential for pressure sensation.

So, today is not the day we find pressure-sensitive fluorescent sensors in a living organism, but that is still a fascinating finding. I will have to read more about those “TRP channels”, the “ultimate integrators of sensory stimuli”. They seem like a very interesting class of bio molecules that I still know too little about 😁

Really nice work, thanks a lot for sharing it here!!

That is amazing! Thanks for sharing!!

😅

Awesome, thanks!! :D I will deactivate the other bot.

I am also running a modified version of the bot on /c/houseplants, but that one responds only if specific keywords are found in the title. I will continue testing that one.

The error I see is a “bad image format” response from the PlantNet API. I zoomed in, took a screenshot, and re-uploaded it to imgur and it worked.

From the FAQ: " The ideal image size is 800 pixels for the small side, or otherwise 1280 pixels for the large side. "

This image is 259x194, so I think that is why it is rejected.

If the timing is right, I would bring a mushroom grow bag with mushrooms sprouting.

If not… probably my radiacode gamma spectrometer and some of my radioactive items. Maybe a clock with radium painted dials and a piece of trinitite. I think that there are many different points of discussion that can be of interest to a broad audience (radioactivity, spectroscopy, electronics, US labor law story of the radium girls, nuclear explosions, background radiation… etc). As a bonus I can bring a UV flash light and show the radium fluorescence. Adults love UV flash lights.

I think that they are referring to Paxillus involotus

It is quite an interesting mushroom. It was considered “safe to eat” for a long time, but it contains an antigen that a human’s immune system can learn to attack.

The antigen is still of unknown structure but it stimulates the formation of IgG antibodies in the blood serum.

I once looked into whether this immune response builds up over many exposures, or if it is a random event that has a probability of happening for each exposure. I don’t remember finding a convincing answer… If it is a random event, then mushroom could be considered a “Russian roulette” mushroom that will usually provide a nice meal, but, if unlucky, you may experience the following:

Poisoning symptoms are rapid in onset, consisting initially of vomiting, diarrhea, abdominal pain, and associated decreased blood volume. Shortly after these initial symptoms appear, hemolysis develops, resulting in reduced urine output, hemoglobin in the urine or outright absence of urine formation, and anemia. Hemolysis may lead to numerous complications including acute kidney injury, shock, acute respiratory failure, and disseminated intravascular coagulation. These complications can cause significant morbidity with fatalities having been reported.

I agree with you that this is probably unrelated to the “generally similar to humans” comment. I feel like this fantasy is a combination of the above fact mixed in with the fact that the Fungi belong to the Opisthokonts, which places them closer to animals than plants, and so they share some interesting cellular characteristics with us. This places them closer to animals than plants, but “generally similar to humans” is perhaps a bit of a stretch ^_

But, it is just a meme about a guy being hyped about mushrooms. Hopefully people don’t expect memes to be super accurate 😁

😆

Dragonfruit lemonade (agua de pitahaya) is delicious!

I have heard of scams like this one happening to people I know for many years now in Mexico, but without AI. In its most basic form the scammer does not need to know who they are calling, because the scam relies largely in volume and the psychology of fear.

The victim picks up, someome screams something along the lines of ‘mom/dad please help’, and then the “kidnapper” takes the phone away and says that they have taken their daughter/son hostage and that they must not hang up the phone. They do this to several numbers until someone takes the bait and freaks out, often revealing additional information (like their kid’s name) in the process.

With AI the scammer could spend the time and collect information to make the scam more believable. But I don’t think that the voice is the bottleneck for these scams. Those who have experienced this (including my mom, uncle, grandma, and acquaintances) say that in the moment of shock they really do believe they hear the voice of their family member.

The AI method makes a more sophisticated class of these attacks easier to perform, but it is still a sophisticated attack that requires gathering data, and the execution will still require some form of a performance. Or… At least that’s what I think

First of all, congratulations for bringing a baby girl into this world!! You must be really excited! I am very happy for you!

This looks very cool. I set up a wiki (https://ibis.mander.xyz/) and I will make an effort to populate it with some Lemmy lore and interesting science/tech 😄 Hopefully I can set some time aside and help with a tiny bit of code too.

Here are the studied compounds. The bottom-right group (the sulfur-containing isothiocyanates) and their chemical decomposition products are probably responsible for some of the strong odors. Allyl isothiocyanate gives wasabi and mustard their pungent taste.

Thanks!

As someone who grew up in the tropics and now lives somewhere colder, I went through the first three table entries thinking that this was Celsius and felt understood.