Cool in the News

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Rusty
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Re: Cool in the News

Post by Rusty » Thu Jul 16, 2015 9:42 am

gaining_age wrote:
Rusty wrote:
UncleBob wrote:
Rusty wrote:
UncleBob wrote:This is so cool.

http://lightyear.fm/
... and imaginary! This was a problem with the Movie Contact too. Beyond a few light years there is nothing to detect because the signals are indistinguishable from noise. The signals were not directional so they're just propagating out in a growing sphere and the signal vanishes fairly quickly. This is the inverse square law at work.
Yes. But it is still cool.
So was the movie Contact. The best part was moving the Very Large Array from a laptop while sitting on a car somewhere in the array. I thought it was dubious that they had WiFi over the site but I suspended judgment to enjoy the ultimate "adjusting the antenna".
Since Rusty opened the can of worms of critique... (Radio waves bounce off the ionosphere for reception...):

Image
That's an interesting illustration but you're in the wrong band! Think VHF propagation of FM radio and TV in space.

The 1974 Arecibo message was a directional broadcast and is quite different than our commercial broadcast. That signal message is detectable at very large distances.
You're out of the woods
You're out of the dark
You're out of the night
Step into the sun
Step into the light

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Re: Cool in the News

Post by gaining_age » Thu Jul 16, 2015 11:35 am

Rusty wrote:
gaining_age wrote:
Rusty wrote:
UncleBob wrote:
Rusty wrote:
UncleBob wrote:This is so cool.

http://lightyear.fm/
... and imaginary! This was a problem with the Movie Contact too. Beyond a few light years there is nothing to detect because the signals are indistinguishable from noise. The signals were not directional so they're just propagating out in a growing sphere and the signal vanishes fairly quickly. This is the inverse square law at work.
Yes. But it is still cool.
So was the movie Contact. The best part was moving the Very Large Array from a laptop while sitting on a car somewhere in the array. I thought it was dubious that they had WiFi over the site but I suspended judgment to enjoy the ultimate "adjusting the antenna".
Since Rusty opened the can of worms of critique... (Radio waves bounce off the ionosphere for reception...):

Image
That's an interesting illustration but you're in the wrong band! Think VHF propagation of FM radio and TV in space.

The 1974 Arecibo message was a directional broadcast and is quite different than our commercial broadcast. That signal message is detectable at very large distances.
It was for illustration purposes only...

Image
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Re: Cool in the News

Post by UncleBob » Sat Jul 25, 2015 12:43 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by wosbald » Sat Jul 25, 2015 1:26 pm

+JMJ+
Roads? Where we're going … oh, you know the rest.

ImageImage

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Re: Cool in the News

Post by UncleBob » Fri Aug 07, 2015 3:07 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by JimVH » Fri Aug 07, 2015 3:22 pm

It says: Sharp Edges: Do Not Hold This End - Manufacturer Not Liable
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Re: Cool in the News

Post by UncleBob » Fri Aug 21, 2015 1:36 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Mon Aug 24, 2015 12:47 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Wed Sep 02, 2015 8:51 am

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by Onyx » Tue Sep 08, 2015 7:38 pm


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Re: Cool in the News

Post by UncleBob » Mon Oct 26, 2015 8:34 am

Annotated Lord of the Rings map on sale in Oxford

Image
A recently-discovered Lord of the Rings map annotated by author JRR Tolkien has gone on sale for £60,000.

It was unearthed on a loose sheet of paper inside a copy of the book owned by late illustrator Pauline Baynes.

Rare book specialist Henry Gott described it as "the finest piece of Tolkien ephemera to emerge in the last 20 years at least".

The map has gone on display for the first time at Blackwell's bookshop in Oxford.

The early depiction of Middle Earth, found after Ms Baynes death in 2008, is covered in handwritten notes by Tolkien in green ink and by Ms Baynes in black writing.
"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Mon Oct 26, 2015 1:19 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Mon Oct 26, 2015 1:25 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by Onyx » Mon Oct 26, 2015 3:10 pm

http://www.iflscience.com/health-and-me ... nborn-twin

Ok, kind of confusing... But a man who is actually a chimera of twins, had a son, who is the son of 10% of his genetic makeup, and the nephew of the other 90% of him. It might happen more often, but we caught this one.

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Re: Cool in the News

Post by CW Spook » Mon Oct 26, 2015 5:47 pm

gaining_age wrote:
Rusty wrote:
UncleBob wrote:
Rusty wrote:
UncleBob wrote:This is so cool.

http://lightyear.fm/
... and imaginary! This was a problem with the Movie Contact too. Beyond a few light years there is nothing to detect because the signals are indistinguishable from noise. The signals were not directional so they're just propagating out in a growing sphere and the signal vanishes fairly quickly. This is the inverse square law at work.
Yes. But it is still cool.
So was the movie Contact. The best part was moving the Very Large Array from a laptop while sitting on a car somewhere in the array. I thought it was dubious that they had WiFi over the site but I suspended judgment to enjoy the ultimate "adjusting the antenna".
Since Rusty opened the can of worms of critique... (Radio waves bounce off the ionosphere for reception...):

Image
That's true, but generally only for signals below 50 Mhz, the exception being for occasional sporadic reflections from the E-layer for signals in the 144 Mhz range.
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Re: Cool in the News

Post by UncleBob » Mon Nov 02, 2015 8:43 am

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Mon Nov 02, 2015 10:38 am

Desalination study authors explore fabricated membrane
The paper drawing interest among news sites is titled, "Desalination of simulated seawater by purge-air pervaporation using an innovative fabricated membrane." The authors, from Alexandria, Egypt, are Mona Naim, Mahmoud Elewa, Ahmed El-Shafei and Abeer Moneer. Their paper has been published in Water Science & Technology.

Al-Fanar Media said, "Moneer and a team of fellow researchers in Alexandria say they have created a new membrane that can extract more fresh water from the sea and improve the energy efficiency of doing so."
The authors said they invented an innovative polymeric membrane. It's described as a breakthrough; it involves the pervaporation process. They said It can desalinate simulated seawater of exceptionally high concentration to produce a high flux of potable water with over 99.7% salt rejection in a once-through purge-air pervaporation process.
"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by gaining_age » Mon Nov 02, 2015 10:41 am

UncleBob wrote:Desalination study authors explore fabricated membrane
The paper drawing interest among news sites is titled, "Desalination of simulated seawater by purge-air pervaporation using an innovative fabricated membrane." The authors, from Alexandria, Egypt, are Mona Naim, Mahmoud Elewa, Ahmed El-Shafei and Abeer Moneer. Their paper has been published in Water Science & Technology.

Al-Fanar Media said, "Moneer and a team of fellow researchers in Alexandria say they have created a new membrane that can extract more fresh water from the sea and improve the energy efficiency of doing so."
The authors said they invented an innovative polymeric membrane. It's described as a breakthrough; it involves the pervaporation process. They said It can desalinate simulated seawater of exceptionally high concentration to produce a high flux of potable water with over 99.7% salt rejection in a once-through purge-air pervaporation process.

Made me look... :) (further link after the quote)
The technology uses pervaporation, a technique by which the water is first filtered through the membrane to remove larger particles and then heated until it vaporises. The vapour is then condensed to get rid of small impurities, and clean water is collected.

According to the research paper, published in Water Science and Technology last month, this method can be used to desalinate water which contains different types of contamination, such as salt, sewage and dirt. This kind of water is difficult to clean quickly using existing procedures.
The membrane technology in combination with vaporisation can be applied in remote settings, as it requires only the membranes for the filtering process, and fire to vaporise the filtered water, the researchers say.
Read more at: http://phys.org/news/2015-09-egyptian-m ... s.html#jCp
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Re: Cool in the News

Post by UncleBob » Mon Nov 23, 2015 3:54 pm

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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Re: Cool in the News

Post by UncleBob » Fri Dec 04, 2015 9:38 am

"One man's theology is another man's belly laugh." - Robert A. Heinlein

"Many of the points here, taken to their logical conclusions, don't hold up to logic; they're simply Godded-up ways of saying "I don't like that." - Skip

"Get your facts first, then you can distort them as you please." -Mark Twain

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