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Comment Especially since they curate the low relevance. (Score 1) 124

There has never been an explanation of the motive for enshittifying Slashdot. It would be far more profitable with quality moderation.

It's as if Slashdot's owners hate money. While I respect the desire to do less work, even AI would be an improvement. Nerds wanting news and stuff that matters are a very large market.

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).

Comment Re:What is left to change besides oven and microwa (Score 2, Insightful) 277

What is left to change besides oven and microwave times?

One...the most IMPORTANT one....my internal clock....

That really takes close to a week to get fixed every time.....it throws all of us humans off to some degree.

Oh...and my dog....I have to adjust her schedule twice a year too....

Submission + - UK vegetables 20-50% less nutritious than in the 1960s (telegraph.co.uk)

Bruce66423 writes: 'The nutritional value of fruit and vegetables has fallen by up to 50pc since the Sixties because of declining soil quality, according to a new study.

'The study found that many crops had lost 20pc to 50pc of several key nutrients.

'Will Summers, a senior associate at the firm, said: “For 60 years we’ve measured food security in calories and tonnes per hectare.

'“On those measures we’ve done remarkably well. But we’ve been quietly hollowing out what’s inside our food.”

'The decrease in nutrient and vitamin value is thought to be down to declining soil quality and crops being selectively bred for their ability to grow quickly, rather than there being any focus on their health benefits.'

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 Good idea! (Score 1) 62

Many Rust Belt cities need investment. They've vast disused smokestack industrial areas with power, water and sewer. They have millions of obsolete structures begging for the wrecking ball.

Data center operators could be incentivized to demolish toxic eyesores and replace them with clean data centers. The low population impact from data centers won't overcrowd Rust Belt areas while contributing to their development.

Development deals could be generous while requiring demolition of areas not yet planned for development. The closer they become to greenfield sites the better. Obsolete cities whose reason for being evaporated still retain road, rail and power.
Adaptive reuse beats developing rural farmland etc.

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