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Invisibledrawde
Registered: 11/15/09
Posts: 5,268
Re: General Science Thread [Re: Data]
    #824949 - 03/21/17 05:26 PM (7 years, 8 days ago)

Thanks for putting this together, D.
I'm still trying to digest it all in my free time here and there, but I've read through and it all seems pretty straightforward.
:thumbup::thumbup:


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King Koopa said:
The amount of pot that Gask smokes is equivalent to a guy shooting heroin on weekends

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OfflineThebooedocksaint
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Re: General Science Thread [Re: drawde]
    #825177 - 03/31/17 02:32 PM (6 years, 11 months ago)

Sorry it's taking me so long, life is crazy and I realized this requires some background info and I'm having difficulty figuing out what info to explain, and what can just be arm-waved.


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"Je pense, donc je suis (I am thinking, therefore I am)." -Rene Descartes

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InvisibleDataM
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Registered: 08/12/08
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Re: General Science Thread [Re: Thebooedocksaint]
    #825179 - 03/31/17 02:59 PM (6 years, 11 months ago)

Quote:

Thebooedocksaint said:
Sorry it's taking me so long, life is crazy and I realized this requires some background info and I'm having difficulty figuing out what info to explain, and what can just be arm-waved.



Yea, explaining things in a conversation is way less difficult, you can just go off of the reactions of the audience as cues to explain background.

It's a good way to really polish your understanding of a topic you thought you knew completely...I always seem to anyway :shrug:


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“The Universe is under no obligation to make sense to you” -NDT

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InvisibleDataM
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Re: General Science Thread [Re: Data] * 1
    #825363 - 04/14/17 02:48 PM (6 years, 11 months ago)

www.nasa.gov/press-release/nasa-missions-provide-new-insights-into-ocean-worlds-in-our-solar-system

This is fascinating. Not only is there a shitload of liquid water, but there is ample hydrogen, which can be combined with CO2 to generate biological energy and methane. Both CO2 and Methane were also identified in the plumes, which doesn't definitely prove that life is currently active in these subsurface oceans, but...H2 + CO2 + Life = Methane...and we have proven that 3 of the 4 items in that equation are present in the subsurface oceans.

:ancientaliens:


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“The Universe is under no obligation to make sense to you” -NDT

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OfflineTrueHerbCrystal
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Re: General Science Thread [Re: Data]
    #825387 - 04/16/17 10:16 PM (6 years, 11 months ago)

I have a computer question.

I remember back in the day, Pentium made a 3.4ghz CPU. And that was the max it could go (besides overclocking).

Nowaways its multiple cores with GHz under 3.4: Dual core, quad core, six core even.

My question is: Why is there a limit at 3.4ghz? And what does the "ghz" clock on the CPU actually mean?

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InvisibleDataM
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Re: General Science Thread [Re: TrueHerbCrystal] * 1
    #825391 - 04/17/17 07:19 AM (6 years, 11 months ago)

3.4 GHz was not a real limit, but better solutions were developed.

At a CPUs heart, there are physical circuits (or circuit arrangements) printed for each basic Instruction that the processor is capable of performing. See page 5 of the link for an example of a processor instruction set.

You also have memory registers and other doodads, all built almost exclusively from small transistors arranged into logic circuits, which stores, transmits, and manipulates binary data in a predictable way.

In extremely high speed processing, data coming from multiple locations into a common instruction set must arrive at the same "time" (that is, both pieces of data must physically arrive before the next step can proceed). In order to ensure that this occurs, these logic circuits are built to only move forward to the next step in response to a processor-wide timing signal call the "clock". Think of the processor as a bunch of captured picts on a Viking ship, the instruction is "row", each pict's physical input is the data coming into the instruction, and the douche banging on the big drum to direct the rowing is the common clock. The GHz that you see on the processor is the clock frequency, which actually comes from a sub-GHz oscillator, and is multiplied up to its set GHz in the processor.

Now this is where it gets weird. At multiple GHz, electronics design starts to get extremely tricky. At low frequencies, we normally think of conductive surfaces as ideal conductors, instantaneously taking on the voltage or current applied to it. In fact, electrons flow like water, and conductors have a certain amount of "volume" or capacitance for electrons that varies with material and size of the conductor. There is also induction, which acts like the accumulator tank on a ground well, to store electrons for later when the voltage drops. These minute changes only become significant at extremely fast-changing voltages and currents.

Then there is a whole new set of problems that arises when the wavelength of the applied signal is shorter than the conductor carrying it, and the shape of the conductor can change the shape of the signal. This type of black magic makes ideal electrical circuits impossible, but on the bright side gives way to neat looking circuits, like this high frequency filter.


The circuits also tend to get extremely lossy, in that the signal attenuates much more quickly the higher the frequency gets. In order to try and drown out these effects, increased voltages were applied on the leads, which lead to increased chances of shorts and increased heat load.

So a new design path was pursued, to make current-clock or lower-clock speed processors smaller, fit more of them into a processor, and design a way for the processors to work in unison to process data in multiple parallel paths rather than one really fast path. This method has become more efficient (per operation performed), and just as cost effective as precious single-thread designs. So the limitations of high-frequency circuit design and the vast improvements of parallel processing ultimately led to the abandonment of that old pursuit of higher clock frequencies. :shrug:

Hope this helps :bobmarley:


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“The Universe is under no obligation to make sense to you” -NDT

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Invisibledrawde
Registered: 11/15/09
Posts: 5,268
Re: General Science Thread [Re: Data]
    #825395 - 04/17/17 01:34 PM (6 years, 11 months ago)

Running on 12 threads over here :evil2:


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King Koopa said:
The amount of pot that Gask smokes is equivalent to a guy shooting heroin on weekends

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InvisibleDataM
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Registered: 08/12/08
Posts: 3,975
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Re: General Science Thread [Re: drawde]
    #825397 - 04/17/17 02:01 PM (6 years, 11 months ago)

That's a lot of porn, bruh :dumblol:


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“The Universe is under no obligation to make sense to you” -NDT

Edited by Data (04/17/17 02:02 PM)

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Invisibledrawde
Registered: 11/15/09
Posts: 5,268
Re: General Science Thread [Re: Data]
    #825399 - 04/17/17 02:12 PM (6 years, 11 months ago)

:ohyou:


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King Koopa said:
The amount of pot that Gask smokes is equivalent to a guy shooting heroin on weekends

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InvisibleDataM
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Re: General Science Thread [Re: drawde]
    #825540 - 04/21/17 09:54 PM (6 years, 11 months ago)

I hope I'm not the only one here who's going to a March for Science tomorrow...


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“The Universe is under no obligation to make sense to you” -NDT

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OfflineTrueHerbCrystal
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Re: General Science Thread [Re: Data]
    #825541 - 04/21/17 11:27 PM (6 years, 11 months ago)

March for Science?

What is dat?

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InvisibleDataM
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Re: General Science Thread [Re: TrueHerbCrystal] * 1
    #825542 - 04/22/17 06:12 AM (6 years, 11 months ago)

It's a global protest that aims to express the scientific and public community's frustration of the current administration's denial or unwarranted skepticism towards certain critical topics, the obvious lack of logic and basic knowledge necessary to make such a call, and the various proposed and implemented actions toward the scientific community. Specifically the gagging and proposed defunding of the EPA and other federal regulatory agencies and proposed abolishment of the deapartment of education.

Beyond that, it is a general support march for science and logic. The sad reality is that science has become entangled in partisan politics, and it shouldn't be. Science is science, it should not be used for a particular agenda, but it's findings should support the development of solutions, rather than being dismissed as some "liberal conspiracy". Science has given us so much, and can continue to bring us much more in the future, that should be a statement that can achieve bipartisan support.

I'll be marching here in NC :highfive: and I heard that Bill Nye will be showing up at the one in DC.


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“The Universe is under no obligation to make sense to you” -NDT

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OfflineTrueHerbCrystal
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Re: General Science Thread [Re: Data]
    #825557 - 04/22/17 07:53 PM (6 years, 11 months ago)

Thats awesome. Im in Oregon thou :sad:

I got a science question: Why are some people allergic to peanuts?

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Invisiblepoor boy
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Registered: 06/07/13
Posts: 16,230
Re: General Science Thread [Re: Data]
    #825559 - 04/22/17 08:52 PM (6 years, 11 months ago)

Quote:

Data said:
It's a global protest that aims to express the scientific and public community's frustration of the current administration's denial or unwarranted skepticism towards certain critical topics, the obvious lack of logic and basic knowledge necessary to make such a call, and the various proposed and implemented actions toward the scientific community. Specifically the gagging and proposed defunding of the EPA and other federal regulatory agencies and proposed abolishment of the deapartment of education.

Beyond that, it is a general support march for science and logic. The sad reality is that science has become entangled in partisan politics, and it shouldn't be. Science is science, it should not be used for a particular agenda, but it's findings should support the development of solutions, rather than being dismissed as some "liberal conspiracy". Science has given us so much, and can continue to bring us much more in the future, that should be a statement that can achieve bipartisan support.

I'll be marching here in NC :highfive: and I heard that Bill Nye will be showing up at the one in DC.




I feel unwanted already...

:unwanted:


--------------------
Learning to love life by living through loss and mistakes
Lessons learned then gradually surfacing, Letting go, stripping naked to scream
I am not perfect nor do I strive to be, I am alive in this world of face first falls and public breakdowns
I'm a retarded, disfigured clown
Dying to be heard through the simple art of letting this heavy wall finally fall
I'm an equal being of no race, or color, a hallucination if you will
Sneaking into the lives of strangers, and letting them fall apart to a new rhythm just to feel better

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InvisibleChemical Addiction
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Folding@home Statistics
Registered: 11/20/14
Posts: 1,681
Re: General Science Thread [Re: Data]
    #826990 - 07/03/17 05:40 PM (6 years, 8 months ago)

Quote:

Data said:

...
And that doesn't even take into account the increasing problem of space garbage building up in orbit. If a major collision were to take place in orbit, it could spawn a runaway series of collisions that spread into other orbits, and forms a shell of small, high speed debris that would make launches into space impossible for at least a few hundred years. This is called Kessler Syndrome, and the more garbage that we leave in orbit, the greater the chances are of this occuring, setting us back centuries or even imprisoning us on a dying planet...





Hey data did you catch this article, I saw it when I was banned and then forgot about it. So apparently drawde and i's idea to use a drone wasn't too far off. Apparently they have already used this gecko tech to create climbing gear for certain surfaces! that would be pretty fucking cool to try, feel like spider man.


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Sure. Don't expect me to compensate your wife and five retarded kids after I've drowned your exposed brain in my semen.
    Spider Jerusalem

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InvisibleDataM
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Registered: 08/12/08
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Re: General Science Thread [Re: Chemical Addiction]
    #827077 - 07/06/17 01:04 PM (6 years, 8 months ago)

That is super interesting. I found a video of this stuff in action.



Its amazing how well it works, and how easily it releases. You are correct, something that can catch moving objects and hang on to them without requiring a ton of "squeezing" would be ideal for catching the fragile and relatively low density objects floating around in orbit.

I love learning about new tech, thanks for sharing! :thumbup:


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“The Universe is under no obligation to make sense to you” -NDT

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InvisibleMacky
Stranger
I'm a teapot


Registered: 02/23/17
Posts: 57
Re: General Science Thread [Re: Data]
    #827310 - 07/13/17 01:45 AM (6 years, 8 months ago)

That's awesome, and no more space food, just sling a load of burritos into orbit and you're winning.

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InvisibleDataM
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Registered: 08/12/08
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Re: General Science Thread [Re: Macky] * 1
    #827455 - 07/18/17 09:47 AM (6 years, 8 months ago)

Just posting a neat RadioLab show on the CRISPR system.

The CRISPR family of gene-editing systems is quickly becoming the go-to system for highly specific and reliable gene edits. As such, this program is a great way to learn the basics of the CRISPR system, in order to better understand the capabilities of CRISPR, the potential benefits as well as the potential ethical questions that will inevitably come up.

Plus this radio show is just interesting, and you can listen to it while working on something else, if you are the kind of user (like me) who has a hard time watching a 50+ minute long video.


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“The Universe is under no obligation to make sense to you” -NDT

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InvisibleDataM
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Registered: 08/12/08
Posts: 3,975
Loc: Southwestern US Flag
Re: General Science Thread [Re: Data]
    #827807 - 08/07/17 06:10 AM (6 years, 7 months ago)



Interesting map of average wind speeds at 80m above ground.

I've driven from Ft. Collins into southeastern Wyoming, and it was hell trying to keep my tiny car on the road once I started driving west out of Cheyenne.


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“The Universe is under no obligation to make sense to you” -NDT

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InvisibleChemical Addiction
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Folding@home Statistics
Registered: 11/20/14
Posts: 1,681
Re: General Science Thread [Re: Data] * 1
    #827865 - 08/13/17 05:45 AM (6 years, 7 months ago)

Someone posted this link in the EG and I thought I would share incase one of you had not heard of it and was interested. www.sci-hub.io  unlocks research papers you would normally have to pay for or be attending a university. Also the research papers that are pdf can be downloaded.


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Sure. Don't expect me to compensate your wife and five retarded kids after I've drowned your exposed brain in my semen.
    Spider Jerusalem

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