* Astronomy

Spontaneous Inflation and the Origin of the Arrow of Time Microscopic laws of physics are essentially time-reversal invariant, but macroscopic thermodynamics exhibits a profound time-asymmetry; entropy typically increases in closed systems. This intriguing feature of the real w...

1 Time travel (1 of 3) Click to Play | View Details

Sound waves in a fluid behave uncannily like light waves in space. Black holes even have acoustic counterparts. Could spacetime literally be a kind of fluid, like the ether of pre-Einsteinian physics? When Albert Einstein proposed his special theory of relativity in 1905, he rejected the 1...

A clock 1000 times more accurate than any of its predecessors has set another benchmark, and could even be used to create a more precise definition of how long a second is. The new clock is a variant on the atomic clocks that appeared in the 1950s. Atomic clocks usually work by measuring the frequency...

The time-keeping device that governs all aspects of our lives, the atomic clock, is celebrating its 50th year. The first atomic clock, which uses the resonance frequencies of atoms to keep extremely precise time, was born at the UK's National Physical Laboratory. Atomic clocks for...

Astronomy Clock, Prague, Czech Republic Click to Play | View Details

[url=http://news.bbc.co.uk/1/low/magazine/8266883.stm]R...

In this four-programme series, string theory pioneer Michio Kaku goes on an extraordinary exploration of the world in search of time. He discovers our sense of time passing and the clocks that drive our bodies. He reveals the forces of time that make and destroy us in a lifetime. He journeys to some of...

To make up for the slowing down of the Earth's rotation, an extra second will be added to 2005. The “leap second" is the first in seven years and reflects the variation in the Earth's rotation. For the first time since 1998, the International Earth Rotation and Reference Systems Service (IERS[/...

	Forum	Replies	Views	Last Post
Universe Time Arrow of Time ( 1 2 3 4 5 … 6 ) (Preview)	Physics News	55	44481	Mar 27 12:14 2017 by Blobrana
Spontaneous Inflation and the Origin of the Arrow of Time Microscopic laws of physics are essentially time-reversal invariant, but macroscopic thermodynamics exhibits a profound time-asymmetry; entropy typically increases in closed systems. This intriguing feature of the real w...
Time Time travel ( 1 2 ) (Preview)	Videos	15	7110	Aug 4 14:31 2012 by Blobrana
1 Time travel (1 of 3) Click to Play \| View Details
Universe Time Space-time ( 1 2 3 4 5 … 13 ) (Preview)	Physics News	120	54045	Sep 12 14:35 2015 by Blobrana
Sound waves in a fluid behave uncannily like light waves in space. Black holes even have acoustic counterparts. Could spacetime literally be a kind of fluid, like the ether of pre-Einsteinian physics? When Albert Einstein proposed his special theory of relativity in 1905, he rejected the 1...
Time optical lattice clock (Preview)	Physics News	1	3726	Mar 10 18:18 2008 by Blobrana
A clock 1000 times more accurate than any of its predecessors has set another benchmark, and could even be used to create a more precise definition of how long a second is. The new clock is a variant on the atomic clocks that appeared in the 1950s. Atomic clocks usually work by measuring the frequency...
Time Atomic clock is 50 ( 1 2 ) (Preview)	Physics News	10	14883	Aug 26 10:12 2011 by Blobrana
The time-keeping device that governs all aspects of our lives, the atomic clock, is celebrating its 50th year. The first atomic clock, which uses the resonance frequencies of atoms to keep extremely precise time, was born at the UK's National Physical Laboratory. Atomic clocks for...
Time Astronomy Clock (Preview)	Videos	2	3692	Oct 13 04:25 2012 by Blobrana
Astronomy Clock, Prague, Czech Republic Click to Play \| View Details
Time Greenwich Prime Meridian (Preview)	Events	2	3361	Oct 13 06:21 2012 by Blobrana
[url=http://news.bbc.co.uk/1/low/magazine/8266883.stm]R...
Time TIME ( 1 2 ) (Preview)	Audio Visual	15	4959	May 18 04:47 2013 by Blobrana
In this four-programme series, string theory pioneer Michio Kaku goes on an extraordinary exploration of the world in search of time. He discovers our sense of time passing and the clocks that drive our bodies. He reveals the forces of time that make and destroy us in a lifetime. He journeys to some of...
Time leap second 2005 ( 1 2 3 ) (Preview)	Physics News	28	32592	Dec 30 19:30 2016 by Blobrana
To make up for the slowing down of the Earth's rotation, an extra second will be added to 2005. The “leap second" is the first in seven years and reflects the variation in the Earth's rotation. For the first time since 1998, the International Earth Rotation and Reference Systems Service (IERS[/...