Science or Science Fiction: The thread to debate science.

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RiaX
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

This is not really a fight, black holes exist fact was proving by the orit of stars at the milkyway galaxy core. What isn't fact is all the understanding we have of a black hole, a black hole I.e a singularity is where our understanding of physics completely stops.
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Re: Science or Science Fiction: The thread to debate science

Post by CapNemo »

No RiaX be a scientist and don't except but investigate
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Re: Science or Science Fiction: The thread to debate science

Post by rustypup »

<almost dumped this in the "offended thread"...>
Why science reporters need something akin to a functioning brain...

the point being that this is how we developed skin, hair and annoying mental deficiencies... i want to punch something...

on a lighter note, we've taken our first step toward programmable genetics... hamilton must be grinning like a trichophiliac in a wig factory...
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Re: Science or Science Fiction: The thread to debate science

Post by hamin_aus »

:lol: LiveScience... what a farce!

Hay guise scientists have discovered our brains evolved by accident, just like everything else that ever evolved on earth.
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Re: Science or Science Fiction: The thread to debate science

Post by StarPhoenix »

Do you mean that the above site is dubious? Oh. :oops:
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Re: Science or Science Fiction: The thread to debate science

Post by rustypup »

StarPhoenix wrote:the above site is dubious?
very much so...

hasn't prevented everyone and their favourite bowel obstruction from liberally spreading the gumpf around the place....
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Re: Science or Science Fiction: The thread to debate science

Post by Anakha56 »

http://arstechnica.com/science/2012/06/ ... ets-lucky/
Dispatches from the birth of the Universe: sometimes science gets lucky
Scientific breakthroughs can come in unexpected ways.

For the generations that grew up with TV before the age of cable, the box in our living room was a time machine, capable of taking us back to just a few hundred thousand years after the birth of the Universe. We just didn't realize it. Nor did the scientists that discovered this, at least at first. But luck seemed to play a large role in one of the biggest discoveries of our lifetime.

That may not have been the intended message of the discussion called "Dispatches from the Birth of the Universe," hosted by the World Science Festival on Friday. The panel provided a good picture of our current state of knowledge on the birth of the Universe, and a glimpse at what we'll likely find out next. But the history of the field turned out to be ripe with examples of things that were both hiding in plain sight (but required a bit of luck to spot), and others we've been lucky to see at all (well beyond the luck of being the right age to have seen the TV static).

Lawrence Krauss, who moderated the panel, introduced it by turning on an old TV set on stage. When turned to an empty channel, the TV displayed a familiar wall of static. About one percent of that noise, Krauss said, comes from the Universe itself, a remnant of an event that took place roughly 13.7 billion years ago. That's when, 375,000 years after the Big Bang, the Universe finally cooled enough that protons could hang on to electrons, forming hydrogen atoms and emitting photons in the process. These photons, stretched out and cooled by the expansion of the Universe, have been with us ever since. And, with just a regular old TV set, you can capture some of them.

...
Follow the link for further reading...
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Re: Science or Science Fiction: The thread to debate science

Post by KALSTER »

Sweet. Like that site.
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Re: Science or Science Fiction: The thread to debate science

Post by StarPhoenix »

Blast from the Past

Hope this isn't another one of them dodgy sites.
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Re: Science or Science Fiction: The thread to debate science

Post by Anakha56 »

http://arstechnica.com/science/2012/06/ ... perations/
Full moon affects Large Hadron Collider operations
Tidal forces cause differences in the position of LHC hardware.

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Biologists often have to do some very technically difficult experiments that, for one or another mysterious reason, will sometimes fail and fail badly. It's not unheard of for the victims of these failures to jokingly blame the phase of the Moon. But it was a bit of a surprise to find out that the physicists running the LHC actually do see odd behavior caused by the phase of the Moon.

As the LHC's Pauline Gagnon describes at the Quantum Diaries, the changing force exerted by the Moon as it orbits—the same thing that drives the tides—creates subtle differences in the position of the hardware within the LHC. The differences are tiny for any individual piece of hardware, but they add up when it comes to something as big as the LHC, which has a circumference of nearly 27km. Plus, the LHC hardware is very, very sensitive to being out of alignment, given that it has to accurately direct bunches of protons that are moving at nearly the speed of light.

The net result is that the LHC's operators sporadically have to tweak the beam's alignments, leading to a temporary drop in the rate of collisions, seen as periodic dips in the plot above. According to Gagnon, the operators also have to make tweaks in response to everything from the level of water in nearby Lake Geneva to the passage of the French high-speed rail.

This story also gives us a chance to highlight the Quantum Diaries, which provides a great insider's view of high-energy particle physics work. The site is sponsored by an international consortium of physics labs, and features articles and blog posts written by the people doing research at the LHC and other facilities. It's a great example of public outreach by the scientific community.
Think its high time we nuke the moon to teach it a lesson! Stop interfering with our Science! :P
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Re: Science or Science Fiction: The thread to debate science

Post by Anakha56 »

Stupid question time...

Saturn's moon Titan is largely comprised of methane, so what would happen if something fiery would descend into it? Would the moon go boom or would it just create a "everlasting" inferno until the methane was no longer there? Just a random thought...
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Re: Science or Science Fiction: The thread to debate science

Post by SykomantiS »

I guess that would depend on the presence of oxygen?
Can methane burn without oxygen?
I think not, else why would you need an AFR for a vehicle?

EDIT: work colleague of mine said some fuels can supply their own oxygen for the chemical reaction, so I guess the question is then if methane is such a fuel?
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Re: Science or Science Fiction: The thread to debate science

Post by Hman »

Only fuels containing Oxygen atoms would be capable of this. Methane being a carbon and hydrogen bond contains no oxygen.
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Re: Science or Science Fiction: The thread to debate science

Post by Anakha56 »

Thanks guys :). Bit disappointed though, would have been fun to fly a flaming satellite into it to see a massive explosion... :(

In other news however...

http://gizmodo.com/5919149/your-brain-s ... mac-and-pc
Your Brain Scan Looks Different on Mac and PC
Science and medicine are supposedly based on rigor—a rigor where theories are only correct if you can replicate results. It turns out, though, that the software used to analyze medical images of your brain gives wildly different answers if it's run on Mac or PC.
The finding is completely crazy, and casts doubt over the way many scans—such as CT and MRI—are analyzed in routine practice.

...
Read on for a intriguing read...

You see I knew I was sane because I saw my quack using a Windows PC and I have always trusted the results of a Windows PC over a Mac... :P
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

Anakha56 wrote:Stupid question time...

Saturn's moon Titan is largely comprised of methane, so what would happen if something fiery would descend into it? Would the moon go boom or would it just create a "everlasting" inferno until the methane was no longer there? Just a random thought...
You couldnt cause see the normal reaction for the combustion of methane is :

CH4 + 2O2 ---> CO2 + 2H2O

besides its too cold to even ignite something there. In order for anything to burn the fuel and the reducer must be in good ratio if the ratio is off then nothing will happen, even in the presence of oxygen if you fill something with methane gas its possible to take a naked flame to it and it will not ignite if there is too much methane, though i wouldnt personally test that theory :lol: :lol:

I dont know why people are so obessed with titan because there is a liquid surface ? so what? the moon they should focus on is europa that lives by jupiter. I mean it has a iron core, oxygen atmosphere and water :/ sounds familiar to me

Also one must know that cause a spark in cold temperatures is VERY difficult maybe an electrical ignition can work definately not a zippo :lol:
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

Anakha56 wrote:Thanks guys :). Bit disappointed though, would have been fun to fly a flaming satellite into it to see a massive explosion... :(

In other news however...

http://gizmodo.com/5919149/your-brain-s ... mac-and-pc
Your Brain Scan Looks Different on Mac and PC
Science and medicine are supposedly based on rigor—a rigor where theories are only correct if you can replicate results. It turns out, though, that the software used to analyze medical images of your brain gives wildly different answers if it's run on Mac or PC.
The finding is completely crazy, and casts doubt over the way many scans—such as CT and MRI—are analyzed in routine practice.

...
Read on for a intriguing read...

You see I knew I was sane because I saw my quack using a Windows PC and I have always trusted the results of a Windows PC over a Mac... :P

Utter nonsense for us at least, our MRI PET and CT machines are made by Siemens medical, General-medical and there is a third manufacture i forgot its name. They run their own software, they have specialised screens and the radiologist reports on the direct feed in the reporting room which the patient never sees. The disc they burn that viewed on a normal PC yeah ok maybe but with the radiologist report and the xray even distorted will not be a problem in diagnosis. The report was done on the live feed from the machines themselves. Its also printed out on paper and the orginal scan is store in the hospital's archive for decades

That disc is sent to the treating doctor so he can confirm the diagnostic doctor's results, however usually the radiologist is never wrong they work in pairs, and they so specialised that a surgeon/gp/ortho wont question them much. Then its annoying when the noob patients come and go "hello im Dr Google" :evil:
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Science or Science Fiction: The thread to debate science.

Post by Monty »

RiaX wrote:
Anakha56 wrote:Thanks guys :). Bit disappointed though, would have been fun to fly a flaming satellite into it to see a massive explosion... :(

In other news however...

http://gizmodo.com/5919149/your-brain-s ... mac-and-pc
Your Brain Scan Looks Different on Mac and PC
Science and medicine are supposedly based on rigor—a rigor where theories are only correct if you can replicate results. It turns out, though, that the software used to analyze medical images of your brain gives wildly different answers if it's run on Mac or PC.
The finding is completely crazy, and casts doubt over the way many scans—such as CT and MRI—are analyzed in routine practice.

...
Read on for a intriguing read...

You see I knew I was sane because I saw my quack using a Windows PC and I have always trusted the results of a Windows PC over a Mac... :P

Utter nonsense for us at least, our MRI PET and CT machines are made by Siemens medical, General-medical and there is a third manufacture i forgot its name. They run their own software, they have specialised screens and the radiologist reports on the direct feed in the reporting room which the patient never sees. The disc they burn that viewed on a normal PC yeah ok maybe but with the radiologist report and the xray even distorted will not be a problem in diagnosis. The report was done on the live feed from the machines themselves. Its also printed out on paper and the orginal scan is store in the hospital's archive for decades

That disc is sent to the treating doctor so he can confirm the diagnostic doctor's results, however usually the radiologist is never wrong they work in pairs, and they so specialised that a surgeon/gp/ortho wont question them much. Then its annoying when the noob patients come and go "hello im Dr Google" :evil:
uhm. The machines might be made by those people, and those people do supply the in hospital viewers. But the Radiologists do sometimes view the films from home computers. (not so much in public, but it happens a fair amount in private, the Senior Radiologist gets a call, asked for an opinion, so they boot up their computer, have a look and send in an email report).

Radiologists are wrong on occasion. And if the treating Doctor doesn't check, you should probably not be going to them. You always need to double check everything. It's how you cover all the bases, and decrease the chance of missing something.
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

No they use a special programme at home to scale it perfectly, also certain scans cant be done over the internet and the radiologist still has to go to the hospital to do certain medical procedures
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Science or Science Fiction: The thread to debate science.

Post by Monty »

RiaX wrote:No they use a special programme at home to scale it perfectly, also certain scans cant be done over the internet and the radiologist still has to go to the hospital to do certain medical procedures
i'm guessing you didn't read the article. they are talking about one of the special programs, not just some run of the mill jpg viewer.

"They can't view certain scans via the internet and have to go in to do procedures."
Well, duh, but what has that got to do with the price of eggs?
We're talking about the issues they could experience by viewing scans on their personal computers.
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

okay let me explain my father is a radiologist they aware of this, they can view scaled scans on an iPad or even an iPhone. I've also met the representitive engineers for siemens medical for its launch of the first PET scan on the east cost of South Africa. Furthermore they access it through the internet via a system called PACS for example which emulates the viewing software of the actually machine (the MRI for example), the viewers are extremely complex, even I battle from times to use the damn programme. When they take cases home they burn the program on to a cd or dvd and the images can only be viewed if you run the .exe cause everything to be viewed properly. I have not heard of or come across a diagnostic thus far in all the doctors I know of and hospitals I've worked in of a case being anatomically incorrect due to a disortion of the image.

I have a lot of field experience in radiology medically, techinically and business aspects of the arena. Besides radiology is a diagnositc even if you a few mm of from distorted scans, its not a problem. A scan can also be distorted by the patient moving, fluid in the body and many other things. Radiology is NOT medicine, its pure diagnostics
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Re: Science or Science Fiction: The thread to debate science

Post by Anakha56 »

/news for science so yeah... :P

http://www.engadget.com/2012/07/16/nasa ... -in-a-jar/
NASA captures red sprite, puts it in a jar

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Lightning doesn't always shoot downwards. Just occasionally, a thunderstorm will be accompanied by a red sprite: a huge, momentary electrical explosion that occurs around 50 miles high and fires thin tendrils many miles further up into the atmosphere. Sprites have been caught on camera before, but a fresh photo taken by arty astronauts on the ISS helps to show off their true scale. Captured accidentally during a timelapse recording, it reveals the bright lights of Myanmar and Malaysia down below, with a white flash of lightning inside a storm cloud and, directly above that, the six mile-wide crimson streak of the rare beast itself. Such a thing would never consent to being bottled up and examined, but somehow observers at the University of Alaska did manage to film one close-up at 1000 frames per second back in 1999 -- for now, their handiwork embedded after the break is as intimate as we can get.
Video at the link.
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Re: Science or Science Fiction: The thread to debate science

Post by RiaX »

oh wow they actually got a picture of it ... amaazing. On that note yesterday I looked up in the sky at about 5am and I sure venus is shining very bright, bright enough to cause a slight glare and even be picked up by a cellphone camera (usually cellphone camera not see the stars in the night sky). I checked up if that really was Venus and it was, has anyone else noticed this (if you bother to look up that is:P) and why is it so bright ? any ideas?
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Re: Science or Science Fiction: The thread to debate science

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:lol: :lol: :lol:
De-Magnetizer wrote: The Acoustic Revive RD-3 is a wonderful product. It completely demagnetizes optical discs such as CD, CD-R, DVD, MD, and it is easy to use.
If you use the RD-3 and demagnetize your disc, you will find that sound and picture quality are much improved. You will be able to hear aspects of the recording that were inaudible before the disc had been magnetized.

<..>

CD players contain magnetic substances, when a disc is played, the rotation of the mechanism, magnet and motor generates a flux which quickly causes discs to become magnetized.
The same problem occurs in CD-R, DVD and MD. In particular MD uses an iron ingredient for the Magnet Catch, so the influence of magnetism is increased.In the worst cases, it is impossible to read signals.
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Re: Science or Science Fiction: The thread to debate science

Post by KALSTER »

Goodness. People will believe anything.
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Re: Science or Science Fiction: The thread to debate science

Post by Hman »

LOL
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