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Redefining time

According to reports published in the Physical Review Letter, the National Institute of Standards Technology (NIST) published a paper indicating that it had discovered a new type of atomic clock based on mercury-ion. The report said that the new atomic clock is so accurate it's nearly 6 times more precise than the current cesium-based atomic clock.

The report said that the NIST currently operates a cesium-based atomic clock called the NIST-F1, which is accurate for roughly 70 million years. If operated continuously, the NIST-F1 would only be off by 1 second after 70 million years. The new mercury-ion atomic clock on the other hand will take 400 million years.

The new experimental clock measures the atomic resonance frequency of a mercury atom. The atom itself is electrically charged and kept in an extremely cold suspension. Using the new mercury-ion atomic clock, scientists at the NIST say that they will be able to conduct more precise experiments and further develop applications that rely on atomic-time accuracy such as GPS systems. Currently, the international standard that defines what one second is relies on cesium-based atomic clocks -- 9,192,631,770 radiation cycles of the change between two energy levels of a cesium atom. The NIST says that it will be five to ten years before we see mercury-ion clocks replace cesium ones.



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RE: .
By Xenoterranos on 8/1/2006 1:07:13 PM , Rating: 2
The beer thing was primarily only in England, and that's because they boiled the water to make the beer. The rest of those problems, although endemic to cities, could be avoided by becoming a hermit and pissing in a well maintained trench. If anything needs to be pointed out, I think it's that today, one would be hard-pressed to find a spot one could live and be a hermit.


RE: .
By TomZ on 8/1/06, Rating: 0
RE: .
By masher2 (blog) on 8/1/2006 1:17:51 PM , Rating: 3
> "If anything needs to be pointed out, I think it's that today, one would be hard-pressed to find a spot one could live and be a hermit."

Take a flight over the continental US and say that. There are still tens of millions of acres virtually empty. Nations like Canada and Russia are far more sparse than the US.

The belief in a world so crowded people will be forced elbow to elbow is held only by people who spend most of theirlives within 100 meters of a road.


RE: .
By kattanna on 8/1/2006 1:57:48 PM , Rating: 2
quote:
The belief in a world so crowded people will be forced elbow to elbow is held only by people who spend most of theirlives within 100 meters of a road.


agreed..as someone who spent a year and a half hitchicking all around north america i can tell you there is a LOT of wide open space.



RE: .
By kitchme on 8/1/2006 1:30:21 PM , Rating: 2
Perhaps they just liked a good pint of beer. Why didn't they just boil water, and then drink it?


RE: .
By Ringold on 8/1/2006 3:18:55 PM , Rating: 2
quote:
Perhaps they just liked a good pint of beer. Why didn't they just boil water, and then drink it?


And pass up a chance to drink beer?

More seriously though, didn't beer at the time have a ton more in it than just alcohol, like our beers today? It was my perception they weren't just a drink but actually practically a meal replacement. I could be wrong, though. Probably am.


Beer only drank in England back in the day...
By blckgrffn on 8/1/2006 11:53:07 PM , Rating: 3
Actually, the beer thing was across the Europe and the world, basically wherever a bunch of people lived close together.

The alcohol killed the nasty crap and the calories and vitamins provided by beer sustained many, it was referred to as "liquid bread".

Beer is considered by many to be the cornerstone of civilization, as it allowed people to live in concentrated city without a pure water source. Also, there is discussion as to weather agriculture was advanced through the need for food or rather for beer ingredients to keep making safe drinking possible.

Yay for beer!


RE: Beer only drank in England back in the day...
By TomZ on 8/2/06, Rating: 0
By masher2 (blog) on 8/2/2006 9:39:39 AM , Rating: 2
> "I would just like to point out that the sterilization effect in beer is due to boiling during preparation. "

I've read the antiseptic properties were due more to the natural acidity of beer, as opposed to the alchoholic content.


"So, I think the same thing of the music industry. They can't say that they're losing money, you know what I'm saying. They just probably don't have the same surplus that they had." -- Wu-Tang Clan founder RZA











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