What did you see on the web today?

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Re: What did you see on the web today?

Postby BMAONE23 » Sat Aug 22, 2015 3:14 pm

Ron-Astro Pharmacist wrote:Quarknado 1

Gas-nados are erupting on the sun. They may be showering its surface with cooked "squarks" that bite with scintillating symmetry and tantalizing tessellations.

Just having some phun with physics. :)


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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Fri Sep 04, 2015 5:47 pm

Vitamin B3 from space.

niacin1.jpg


https://en.wikipedia.org/wiki/Niacin

It's interesting that a form of it is in need of investigation right here on Earth – to find out if it could be a key to better living.
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Sep 23, 2015 9:14 pm

:ssmile: The hype is starting to accelerate for "The Martian". I hope the movie can come close to the fun of the book. :wink:
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Oct 21, 2015 8:20 pm

How is Kepler like your old Timex?

It took a lickin' but keeps on tickin'


http://www.nasa.gov/ames/kepler/nasa-k2-finds-dead-star-vaporizing-mini-planet
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Thu Nov 05, 2015 11:40 pm

http://www.slate.com/blogs/bad_astronomy//2013/11/05/atv_4_albert_einstein_pictures_of_it_burning_up_in_re_entry.html

Do the astronauts in the ISS temporarily feel the effects of gravity when it's thrusted to a higher orbit? I guess I never have seen images of that particular event.
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Re: What did you see on the web today?

Postby Nitpicker » Mon Nov 09, 2015 6:03 am

Ron-Astro Pharmacist wrote:
Do the astronauts in the ISS temporarily feel the effects of gravity when it's thrusted to a higher orbit? I guess I never have seen images of that particular event.


http://blogs.discovermagazine.com/badastronomy/2011/11/10/space-station-gives-physics-a-boost/

Yes, but only very slightly. Or rather, no ... it's not acceleration due to gravity, but acceleration due to engine thrust.

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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Mon Nov 09, 2015 4:02 pm

Nitpicker wrote:
Ron-Astro Pharmacist wrote:
Do the astronauts in the ISS temporarily feel the effects of gravity when it's thrusted to a higher orbit? I guess I never have seen images of that particular event.


http://blogs.discovermagazine.com/badastronomy/2011/11/10/space-station-gives-physics-a-boost/

Yes, but only very slightly. Or rather, no ... it's not acceleration due to gravity, but acceleration due to engine thrust.


Thanks Nitpicker – I suspect those on the ISS really do have a better feeling for the differences between gravity and acceleration.

I have a better understanding of the new goals at CERN following last night's 60 Minutes but still hate commercials advertising medications though, in some ways, both are introducing information to a subset of a population ill-informed to grasp it thoroughly. :wink: I hope they find extra-dimensions before I leave for one. :) It might help if it's known they exist. :roll:
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Nov 11, 2015 4:42 pm

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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Tue Nov 17, 2015 4:56 pm

The more I read about the direction theory is heading toward describing extra dimensions - the more plausible it seems that we can't sense all that is. I am tempted to call that "nonsense" but that would be senseless. :blah:

Perhaps some sort of multisense will make it common sense though I suspect that may not be a direction congruent with Asterisk's. In the end it's just as hard to know the boundary between science and philosophy as it is to delve into the other dimensions - the more I read.
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Tue Nov 17, 2015 9:20 pm

I do like new theories. Here's one from a very famous source. http://www.businessinsider.com/lisa-randall-dark-matter-dinosaurs-extinction-theory-2015-11 That would be Lisa Randall not Business Insider. :)
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Re: What did you see on the web today?

Postby geckzilla » Tue Nov 17, 2015 11:13 pm

That dark matter theory has been widely poo-poo'ed by various scientists. Fun stuff, though.
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Nov 18, 2015 6:28 pm

geckzilla wrote:That dark matter theory has been widely poo-poo'ed by various scientists. Fun stuff, though.


Thanks for the insight Geck.

I ran across this photo in this week's HEASARC Picture of the Week.

http://fermi.gsfc.nasa.gov/ssc/Fermi_5_year.jpg

Quite 3D! I don't think I've ever noticed it being shown so vividly.
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Re: What did you see on the web today?

Postby bystander » Wed Nov 18, 2015 6:53 pm

Ron-Astro Pharmacist wrote: I ran across this photo in this week's HEASARC Picture of the Week.

viewtopic.php?t=31967
viewtopic.php?t=35370
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Fri Nov 20, 2015 6:06 pm

Click to play embedded YouTube video.


Apparently the world and astronomy with respect to telescopes can't seem to get along. The same goes for some astronomers and their next generation of telescopes.

http://www.scientificamerican.com/article/behind-tomorrow-s-telescopes-a-bitter-rivalry-from-yesterday/

I suppose competition has always been present when it comes to humans so why wouldn't it affect astronomy as well. Hopefully as these rivalries are exposed to the public eye they will find a way to resolve themselves.
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Mon Nov 23, 2015 10:50 pm

Guess this proves that the Earth isn't a black hole. Or my head is. :cry:
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Dec 16, 2015 8:40 pm

Will this go in the " Who ordered that file?" :D We could only be so lucky if it turns out to be something unexpectedly interesting. 8-) Ok I'm done for the day :roll:
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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Jan 13, 2016 8:53 pm

Want to leave Earth soon for a journey to the stars?

Sounds like we are stuck with just eating one. That's a little hard to digest. :facepalm:
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Re: What did you see on the web today?

Postby Ann » Thu Jan 14, 2016 12:50 am

Ron-Astro Pharmacist wrote:Want to leave Earth soon for a journey to the stars?

Sounds like we are stuck with just eating one. That's a little hard to digest. :facepalm:


That was a very good, levelheaded, clear-eyed article about the actual difficulties that would meet humans trying to travel to another solar system to establish a second Earth.

The very first thing that really, really impressed me about space was the sheer inconceivable size of it. It wasn't any of the objects inside it, although I've certainly grown interested in many of the objects in it since then. Mars! Jupiter! Saturn! Pluto! Sirius! The Pleiades! The Orion Nebula! Sagittarius A*! The Whirlpool Galaxy! And many, many others.

Still, I can't think of any single object in space without making some kind of mental calculation as to how far away it is. The idea that it could ever be relatively straightforward to send humans across light-years in space has always seemed absurd to me.

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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Fri Jan 29, 2016 5:38 pm

Speak of the devil... Now if I could find a Math to Ron translator that spoke in "Fiz"ese. :D
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Re: What did you see on the web today?

Postby Ann » Sat Jan 30, 2016 2:28 pm

Ron-Astro Pharmacist wrote:Speak of the devil... Now if I could find a Math to Ron translator that spoke in "Fiz"ese. :D


I read the abstract and decided that... No.

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Re: What did you see on the web today?

Postby Chris Peterson » Sat Jan 30, 2016 3:24 pm

Ann wrote:
Ron-Astro Pharmacist wrote:Speak of the devil... Now if I could find a Math to Ron translator that spoke in "Fiz"ese. :D

I read the abstract and decided that... No.

Well, you could skip over the formulation sections with their math, and just go to the conclusions, with easy to understand arguments like
We do not expect significant mutual information between the low-energy degrees of freedom in a Wilsonian effective action and those in the ultraviolet completion.
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Re: What did you see on the web today?

Postby geckzilla » Sat Jan 30, 2016 9:19 pm

Does the use of infrared and ultraviolet in that paper even have anything to do with light or is it some kind of metaphor?
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Re: What did you see on the web today?

Postby Ann » Sun Jan 31, 2016 6:04 am

geckzilla wrote:Does the use of infrared and ultraviolet in that paper even have anything to do with light or is it some kind of metaphor?


If they are used as metaphors, it would be the first time I have come across the terms infrared and ultraviolet being used that way.

Blue is quite often used as a metaphor for "shortwave" or "more shortwave than...". Red is sometimes used as a metaphor for "longwave" or "more longwave than..." Red is often used as a metaphor for "cool", as in red giant star or red dwarf star. Blue is less often used as a metaphor for "hot". Hot stars are typically called "hot stars" or O-type stars or B-type stars, or OB stars. They are less often called just "blue stars".

But to my knowledge, ultraviolet and infrared are not used as metaphors.

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Re: What did you see on the web today?

Postby Ron-Astro Pharmacist » Wed Feb 03, 2016 8:27 pm

We will probably never know what a black hole looks like close up but you might be able to see one from your back yard.
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Re: What did you see on the web today?

Postby bystander » Wed Feb 03, 2016 9:44 pm

Science on the campaign trail: Where the presidential candidates stand
Science Magazine | Science Insider | 2016 Feb 01
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