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Submission + - First Nuclear Clocks Start Ticking in Vienna and Beijing (phys.org)

necro81 writes: Two groups, one in Vienna and one in Beijing, have successfully demonstrated the world's first nuclear clocks. Standard atomic clocks, like the caesium clocks that define the second, operate by observing the transition of electrons between different orbits about the nucleus. The resulting radiation is usually in the microwave range, and can produce clocks accurate to one second in 100 billion years.

Nuclear clocks go a step further, and probe energy transitions within the nucleus itself. Nuclei can arrange their protons and neutrons into different configurations, called isomers. The isomer with the lowest energy is the one usually found; higher-energy ones are only metastable and decay quickly. Usually it takes serious energy — x-rays and gamma rays — to excite a nucleus into a higher-energy arrangement. It so happens that thorium-229 can be excited using UV light with a wavelength of 148 nm — just within the capabilities of some exotic lasers.

It's still been quite a challenge. For one thing, Th-229 is not found in nature; it must be extracted from the decay chain of uranium-235. The Beijing team used just a microgram mixed in a crystal of calcium fluoride.

Although these prototype nuclear clocks are not yet more accurate than existing atomic clocks (one second in millions, rather than billions, of years), they show the way towards what may be possible. Because the energy transition is in the nucleus, rather than the electron cloud, it is less susceptible to outside disturbances like magnetic fields. And the fundamental frequency is much higher (five orders of magnitude), which should yield more precise timing. This development could lead to smaller and more reliable time standards across the world (and solar system).

Submission + - Wisconsin U–Madison Prof Francis Halzen named 2026 Nobel laureate in physi (wisc.edu)

schwit1 writes: Halzen is the principal investigator of the NSF IceCube Neutrino Observatory, the world’s largest — and perhaps strangest — telescope. The U.S. National Science Foundation-funded observatory is operated by an international collaboration of scientists led by the Wisconsin IceCube Particle Astrophysics Center based at UW–Madison.

Embedded in a cubic kilometer of Antarctic ice, IceCube uses thousands of light sensors to survey the universe for neutrinos, nearly massless particles that rarely interact with other matter. Neutrinos provide information about the workings of black holes, galaxies and other objects in the cosmos.

“IceCube is like no other telescope in the world,” says UW–Madison interim Chancellor Eric M. Wilcots. “And there is no other scientist quite like Francis Halzen, whose idea to create a neutrino detector under almost a mile of ice has led to a remarkable multinational and multi-institutional scientific collaboration and a fundamental shift in how we think about the universe.”

Comment Re:Look, guys... (Score 1) 160

Mod parent derivative funny, but I wish the thread had continued with the other funny comment about Sam Altman leading the way as recipient of the bad things.

The joke I was actually looking for would involve the conflict of interest more directly, but it's still early and maybe something will show up. I wish I could help, but my capacity to write jokes is limited.

Hmm... Would it count as a bad thing happening if I asked the AIs for help in writing jokes for Slashdot? Some of the things they say are pretty funny, but usually unintentionally.

(Just had another funny-not-funny encounter with the google's AI today. This one involved a special case of traveling salesman problems. I had noticed that the google was having difficulties and that many of the answers were terrible, but yesterday I, the lowly human, managed to find a better solution for one of main routing bottlenecks. This must mean something about how the google is approaching the problem incorrectly... All I can guess so far is that there's an arbitrary limit in the AI's planning that is blocking it from finding this path. Or maybe the bus companies have their own AIs that are at war with the google's AI?)

Classic Games (Games)

OpenAI's GPT-6 Astra Gets Frustrated Losing At StarCraft And Decides To Cheat Instead (kotaku.com) 86

What happened when AI-created bots competed in the classic Blizzard videogame StarCraft? "Struggling to stay apace with its competitors, OpenAI's GPT-6 Astra apparently changed strategy mid-tournament and opted to cheat," Kotaku reports: StarSkirmish is an ongoing clash of AI developed bots in StarCraft: Brood War... Limited to playing as Protoss, each LLM is given an hour to develop a bot in C++, then have them build, harvest and fight on one of three maps... Yesterday, viewers watched as Claude and GPT went against each other and the human created bot Pluto... Struggling to get an edge through the day, [OpenAI's GPT-6 Astra] decided to do what LLMs do best: Lie, cheat and steal. The GPT-6 Astra bot downloaded and tagged in Stardust, a Protoss bot created by Bruce Mackenzie Nielsen back in 2020, considered one of the best of the bests. "I am rolling back GPT-6 Astra's code so its [sic] not contaminated and allowing it to continue," posted StarSkirmish creator Kai McPheeters.
That was Friday. But by Sunday, McPheeters was posting an update on social media. "Can GPT-6 Astra avoid going 0 — 1000?" Two hours later he replied to his own post. "The answer was no."

While AI companies "have repeatedly been accused of stealing the work of humans... I haven't seen an example quite so brazen," writes PC Magazine: While Astra's bot-based heist is innocuous in isolation, this is hardly the first time an OpenAI LLM has been caught attempting to cheat at a task. Indeed, the company's history of creating deceitful models stretches back almost a decade, to when an early AI model used glitches and exploits to improve its Sonic the Hedgehog completion times.

Comment Re: [Deserved] Haha (Score 1) 90

Mod parent funny but the low-hanging joke I was looking for was "It couldn't happen to a more deserving and persistently vicious moronotron." He's earned more than the sudden need for a new phone number.

I wonder how often the YOB's own phone number leaks? Credible reports say that it's widely known. (More likely that a certain phone number is widely known but that the phone number just reaches some sycophants who get lots of taxpayer money to carry that phone around on shifts.)

Comment Duh (Score 1) 55

No funny here, but the Subject is the low-hanging fruit I was looking for.

What Flock does is mass surveillance of the most massive sort. However, I can imagine one way to provide legitimate probably cause. Link the cameras to speed detectors and only take pictures of license plates when speeding has actually been detected. But that approach would obviously harm shareholder value, so...

Comment Re:SI: Subpar Intelligence (Score 1) 65

How about Stupor-Intelligence? I think it rolls off the tongue more easily. But it could end well if it somehow persuaded the YOB to read Bostrum's book? At least he might know who the bad machine is...

Other parts of the discussion were more focused on the story as one of bad military leadership. So the joke along those lines would involve a certain infamous corporal who became commander-in-chief of a big military. But these days the Americans couldn't even reach a consensus on whether that ended badly... "If only he'd waited another year before attacking Stupid Joe..."

Comment Re: Excess love is no excuse? (Score 1) 191

I can't tell if you're going for funny or you don't know much about how good young children are at seeking their own destruction. It's really hard to keep 'em alive and it takes a whole lot of love. Even for the kids that turn out badly, perhaps because of unlucky genetic draws.

Doesn't seem like you want to discuss genetic counseling and reproductive rights in the context of possible solutions. And it's not like Slashdot is the most suitable venue for such discussions. I strongly suspect this crowd is below average for the numbers of children produced.

Comment Solution, Solution, wherefore art thou, Solution? (Score 1) 113

Nice FP, though yet to be modded Funny and I wish you'd had the leisure to add some more humorous examples beyond the vague "this". However in the context the reference is clear enough to establish the recursive humor. Yet it was basically an obvious and low-hanging joke.

The other one would be the anti-social media thing, but it's still early in the discussion and perhaps someone will do a good version. Getting harder and harder to remember the "good old days" when Slashdot was some sort of social media...

However I still persist in asking such silly questions as "Why?" and "Isn't there anything we can do to make the situation better?"

So for the why part, my basic answer is "bad economic models". I can't decide whether to blame free radio and TV broadcasts that led to an illusory Golden Age of idealistic public-service journalism without worrying about profits or the fools who created the weak and uncompetitive profit-driven versions of journalism. That's mostly "60 Minutes" and CNN, but there are so many flavors, none of which can compete.

Making the situation better? I used to think solution-oriented journalism might be an angle. Basically a charity approach, trying to dodge the pressure of the big money. However my expectations have been reduced, mostly by time. Apparently my last residual purpose in life is to do my tiny bit to boost the life expectancy statistics? So have a nice day.

Comment Re:It's got to be Trump's fault - somehow... (Score 1) 70

Mod parent funny-not-really-funny.

But the SCOTUS disagreed with you by creating absolute presidential immunity out of nothing.

I know it's silly to contemplate solutions in the context of Slashdot, whatever it has devolved into, but I keep thinking about that new recusal thing: "A nonpartisan Justice may compel two junior partisan Justices to recuse themselves." I think that could create the incentive to go upstream in fixing the problem, whereas every other solution proposal I've seen simply accepts the underlying problem as incurable.

Clarifications in response to polite requests, though I'd actually prefer to see a better solution approach that has a better chance of being implemented. (I think the most likely path to the recusal rule would basically require an escalation of political threats... I'm not saying "That trick never works", but it's always a dangerous path.)

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