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A new atomic clock is even more precise than its predecessors:
It's about time. The most precise atomic clock ever made has been created by arranging strontium atoms in a grid-like pattern and then stacking those grids like pancakes.
Most atomic clocks use atoms of the isotope caesium-133. The ticking of time is measured through microwaves emitted by the electrons around those atoms jumping from a lower to higher orbit as they absorb and then lose energy from a laser.
But these clocks are constrained in how precisely they can divide time because caesium electrons have a speed limit: they can only jump back and forth 9 billion times per second. The electrons in strontium atoms can transition nearly 1 million billion times per second.
"In 2014, the world's most accurate optical clock wouldn't lose or gain one second in the entire age of the universe," says Jun Ye at the University of Colorado at Boulder. Previous caesium clocks kept time accurately to within a second over the course of 300 million years.
Now, Ye's group has built a strontium clock that is so precise, out of every 10 quintillion ticks only 3.5 would be out of sync – the first atomic clock ever to reach that level of precision.
Also at the National Institute of Standards and Technology.
A Fermi-degenerate three-dimensional optical lattice clock (DOI: 10.1126/science.aam5538) (DX)
A synchronous clock comparison between two regions of the 3D lattice yields a measurement precision of 5 × 10–19 in 1 hour of averaging time.
(Score: 3, Informative) by takyon on Friday October 06 2017, @01:38AM (4 children)
By default they should. But the settings can be changed here: https://soylentnews.org/my/messages [soylentnews.org]
You can choose no message, "Web" messages, or email.
For "Web" messages you check the "You have 0 new messages waiting for you, and X old messages" text on pages with a sidebar.
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 2) by takyon on Friday October 06 2017, @01:52AM (3 children)
There is also a setting that could be used to filter ACs or any other group of users based on custom moderation bonuses.
Mine is set to -1 but I think the default it 0 (which means the user would see AC replies).
The moderation bonuses I'm talking about are listed here: https://soylentnews.org/my/comments [soylentnews.org]
They allow you to add a modifier to moderations reasons (e.g. you could make each Troll mod add +5 instead of -1), modify based on Friend/Fan/Foe/Freak/(Friend|Foe) of a Friend status, modify if the user is an AC or a new user (it lets you set the %, so at 1% the latest ~67 users are counted as new), modify based on comment length, and change the karma bonus (you could "punish" everyone who chooses to post with the karma bonus). These modifiers only change the scores that you see.
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 2) by maxwell demon on Friday October 06 2017, @06:48AM (2 children)
I'm pretty sure that at the time of posting, comments have not yet been moderated. Therefore IIUC the reason modifiers should not affect whether you get notified about a reply. OTOH I think the relationship and Karma/AC/new user modifiers should affect it, as that is already determined at the time of posting.
The Tao of math: The numbers you can count are not the real numbers.
(Score: 2) by takyon on Friday October 06 2017, @07:05AM (1 child)
I was just explaining literally everything on that page since I think nobody knows of it.
[SIG] 10/28/2017: Soylent Upgrade v14 [soylentnews.org]
(Score: 2) by maxwell demon on Friday October 06 2017, @07:47AM
What makes you think so? I guess the typical AC doesn't, but I'd expect that most logged-in users do. Note that not using it is not the same as not knowing about it. For example, I browse at -1/0, therefore there's little value to me for those controls. In addition, assuming it wasn't changed from how it worked on Slashdot, the score cap is applied after the modifiers, so you actually lose information when using them. As an extreme case, say you give a +5 modifier for Insightful posts; then you cannot distinguish between a post that was moderated Insightful once, twice, or even net moderated down to 0, but still bearing the Insightful label.
The Tao of math: The numbers you can count are not the real numbers.