Page: 1 2 3 4 5 6 ... 139 Next »


Profile Information

Member since: Wed Nov 5, 2014, 09:40 AM
Number of posts: 17,912

About Me

46. Small business co-owner. IT Professional by trade.

Journal Archives

Brinks truck spews money all over NJ highway. Watch the people go nuts.
Posted by Currentsitguy | Thu Dec 13, 2018, 12:46 PM (5 replies)

Major police operation in Strasbourg. Unclear what is going on yet
Posted by Currentsitguy | Thu Dec 13, 2018, 10:33 AM (3 replies)

Here we go again. Multiple people shot in Strasbourg, France Christmas Market
Posted by Currentsitguy | Tue Dec 11, 2018, 03:05 PM (9 replies)

John Paul Jones' Bonhomie Richard found

The remains of the famous Revolutionary War frigate USS Bonhomme Richard have been discovered off the coast of the U.K., more than 200 years after it sank following a naval battle.

The BBC reports that the famous warship, which was commanded by John Paul Jones, was discovered by search experts Merlin Burrows. Pieces of the ship were found off the coastal town of Filey in Yorkshire
Posted by Currentsitguy | Tue Dec 11, 2018, 11:50 AM (2 replies)

Stick a fork in her, she's done
Posted by Currentsitguy | Tue Dec 11, 2018, 11:40 AM (5 replies)

My wife's 13 year in the making art piece

We just hung it this weekend. It was severely damaged in our house fire 5 years ago. I built the new mounting panel. It's mostly pen and ink. The black foam core covers the worst of the burns. The large red piece in the center. Btw, it's still not done.

Posted by Currentsitguy | Mon Dec 10, 2018, 07:41 PM (11 replies)

How a mistake has led to a greater understanding of Einstinian Time Dialation

Clocks on a pair of Galileo satellites have given physicists the first refinement of gravitational redshift since 1976.

The experiment was only possible because in 2014, a launch went ever-so-slightly wrong: two Galileo satellites known as Doresa and Milena were launched into elliptical orbits, rather than circular orbits.

The elliptical orbit had a semi-major axis of 26,200km inclined at 49.8 degrees – and that eccentricity gave a team of boffins from five countries an idea for an experiment - since the satellites' orbits take them in and out of Earth's gravity just a little, they should be able to measure how gravity affects time on the two birds.

Thus was born the ESA's GREAT experiment (Galileo's gravitational Redshift Experiment with eccentric sATellites – the ESA has an announcement here).

As the American Physical Society noted: "The resulting modulation of the gravitational redshift of the onboard atomic clocks allows the redshift determination with high accuracy."

Working in two independent teams – one led by Sven Herrmann in Germany, the other led by Pacôme Delva in France – they measured how the frequencies of the satellites' hydrogen maser master clocks changed at various distances from Earth.

Einstein predicted that clocks would slow down slightly in the presence of a gravitational field. The APS (which published the research in Physical Review Letters) said that this "redshift" of a clock's frequency results from relativity's equivalence principle.

In 1976, scientists tested this by hoisting a clock 10,000km high on a rocket, and comparing its frequency shift to one on earth, in an experiment called the Gravity Probe A.

By combining the Galileo satellites' experience of time with laser-ranging (to reduce uncertainty about the satellites' orbit), the experiment "showed that general relativity could predict the clock's frequency shift with a precision of 0.007 per cent".

Working with three years of data, the two groups "improved constraints on general relativity violations by up to a factor of 5.6, providing the first improvement of redshift tests in over 40 years".
Posted by Currentsitguy | Fri Dec 7, 2018, 10:22 AM (1 replies)

French Army moving toward Paris. This may get ugly
Posted by Currentsitguy | Thu Dec 6, 2018, 02:30 PM (7 replies)

Another Iphone tech question

Does anyone know anything about the voicemail naming conventions? I've managed to extract all data from this phone I am helping out with. All of the voicemails are in .amr format. They are named +phone_number (20171024_103251).amr for example. I'm assuming the numbers indicate date and time. Any idea on how to decipher them?
Posted by Currentsitguy | Wed Dec 5, 2018, 10:51 AM (6 replies)

Russians vs Rednecks

Posted by Currentsitguy | Tue Dec 4, 2018, 04:31 PM (0 replies)
Go to Page: 1 2 3 4 5 6 ... 139 Next »