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Patches and Stickers for sale here

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7349 No. 7349 ID: 5f26ef hide watch quickreply [Reply]
Hey, I am developing a new chan engine with the purpose of being more efficient and flexible than the existing options.

Recently I have released the first stable release and I am looking for people willing to stress it.

The live instance I run can be found at http://lynxhub.com
>> No. 7351 ID: ce2e2f
>> No. 7390 ID: de0bec
File 144298341132.png - (24.39KB , 1304x192 , opchan - thanks ivan.png )
That post was everything I hoped it would be
>> No. 7413 ID: 269a99
I wish someone would just make one which looks as similar to 4chan as possible instead of focusing on modularity. It would be the easiest way to get a community on board.

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8035 No. 8035 ID: fb6dac hide watch expand quickreply [Reply] [First 100 posts] [Last 50 posts]
Hello, OperatorChan. I was doing these on 4chan's /k/ and someone told me that you guys might have some questions as well.

Ask me about nuclear weapons. (Except the science). Nuclear weapons strategy, weapon effects, current capabilities, former capabilities, weapon effects, etc....

My bona fides:
Worked with nuclear strategy and arms control with 2 different agencies ( Bureau of Verification and Compliance, Office of Nuclear Deterrence) and currently work as an employee of a defense contractor.
(Note, I am not a nuclear strategist. I did not help develop any attack options or anything like that, but I am familiar with the theory of nuclear warfighting.)

A few notes.
1) I can not give you anything that is illegal for me to disclose. In most cases, it might be in the wikipedia article but still illegal for me to talk about it.
If this comes up, I will tell you.
2) This also means that 100% of what I can tell you you can find in a book or paper. So why do this? Because most people don't want to wade through reams of paper to answer one question.
As I have already read through those oceans of crap, I can save you some time.
3) What is policy, is often times different from my opinion. Where they differ, I will tell you.
4) I will not jeopardize my employment or freedom.
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>> No. 8136 ID: 1e7cc7
File 14319585887.jpg - (413.54KB , 1776x1376 , US nuke fallout shelter plans, Popular Mechanics D.jpg )
Fallout is the radioactive particles that fall to earth as a result of a nuclear explosion. It consists of weapon debris, fission products, and, in the case of a ground burst, radiated soil. Fallout particles vary in size from thousandths of a millimeter to several millimeters. Much of this material falls directly back down close to ground zero within several minutes after the explosion, but some travels high into the atmosphere. This material will be dispersed over the earth during the following hours, days (and) months. Fallout is defined as one of two types: early fallout, within the first 24 hours after an explosion, or delayed fallout, which occurs days or years later.

Most of the radiation hazard from nuclear bursts comes from short-lived radionuclides external to the body; these are generally confined to the locality downwind of the weapon burst point. This radiation hazard comes from radioactive fission fragments with half-lives of seconds to a few months, and from soil and other materials in the vicinity of the burst made radioactive by the intense neutron flux.

Most of the particles decay rapidly. Even so, beyond the blast radius of the exploding weapons there would be areas (hot spots) the survivors could not enter because of radioactive contamination from long-lived radioactive isotopes like strontium 90 or cesium 137. For the survivors of a nuclear war, this lingering radiation hazard could represent a grave threat for as long as 1 to 5 years after the attack.

Predictions of the amount and levels of the radioactive fallout are difficult because of several factors. These include; the yield and design of the weapon, the height of the explosion, the nature of the surface beneath the point of burst, and the meteorological conditions, such as wind direction and speed.

An air burst can produce minimal fallout if the fireball does not touch the ground. On the other hand, a nuclear explosion occurring at or near the earth's surface can result in severe contamination by the radioactive fallout. http://www.atomicarchive.com/Effects/effects17.shtml
>> No. 8137 ID: 1e7cc7
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The Robust Nuclear Earth Penetrator (RNEP)

The Bush Administration requested funding from Congress to research a new type of nuclear bomb. The Robust Nuclear Earth Penetrator (RNEP) is a nuclear weapon that would burrow a few meters into rock or concrete before exploding and thus generating a powerful underground shock wave. Its hypothetical targets are deeply buried command bunkers or underground storage sites containing chemical or biological agents.

The RNEP budget: RNEP is not just a feasibility study: the Department of Energy's 2005 budget included a five-year projection—totaling $484.7 million—for the weapons laboratories to produce a completed warhead design and begin production engineering by 2009. Last year, David L. Hobson, the Republican chairman of the House Appropriations Energy and Water Development Subcommittee, zeroed out FY05 funding for the program, stating, "we cannot advocate for nuclear nonproliferation around the globe, while pursuing more usable nuclear weapons options here at home." However, the FY06 budget request includes $4 million for RNEP and an additional $4.5 million to modify the B-2 bomber to carry the weapon.

The RNEP design: Weapons designers at Lawrence Livermore National Laboratory intend to use an existing high-yield nuclear warhead—the 1.2-megaton B83 nuclear bomb—in a longer, stronger and heavier bomb casing. The B83 is the largest nuclear weapon in the U.S. arsenal, and nearly 100 times more powerful than the nuclear bomb used on Hiroshima.

Technical realities:
According to several recent scientific studies, RNEP would not be effective at destroying many underground targets, and its use could result in the death of millions of people.

RNEP would produce tremendous radioactive fallout: A nuclear earth penetrator cannot penetrate deep enough to contain the nuclear fallout. Even the strongest casing will crush itself by the time it penetrates 10-30 feet into rock or concrete. For comparison, even a one-kiloton nuclear warhead (less than 1/10th as powerful as the Hiroshima bomb) must be buried at least 200-300 feet to contain its radioactive fallout. The high yield RNEP will produce tremendous fallout that will drift for more than a thousand miles downwind. As, Linton Brooks, the head of the National Nuclear Security Administration told Congress in April, "the laws of physics will [never allow a bomb to penetrate] far enough to trap all fallout. This is a nuclear weapon that is going to be hugely destructive over a large area" if it goes off underground.
RNEP could kill millions of people: A simulation of RNEP used against the Esfahan nuclear facility in Iran, using the software developed for the Pentagon, showed that 3 million people would be killed by radiation within 2 weeks of the explosion, and 35 million people in Afghanistan, Pakistan and India would be exposed to increased levels of cancer-caus
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>> No. 8138 ID: 667a5a
That's what I'm talking about though

When a lower than max yield is dialed in what do you think happens to the unused reaction mass? It gets ejected as highly radioactive/dirty debris

The more reaction mass you use (ie the higher yield you dial in), the lower your pollution per energy released

Thermonukes are most efficient because they use all of their fissionable fuel plus several tons of boosting fuel, so their pollution per energy released is negligible
>> No. 8139 ID: d6b0b5
What if you wanted to hit the logistics target at Riesa but not destroy the rail bridge nearby?

It allows you some flexibility with the deployment of your weapon.

Depends on the design of the weapon. The B41 had a proposed variant that would produce huge amounts of fallout and was in the 20 Mt range.
>> No. 8140 ID: 385f49
>What if you wanted to hit the logistics target at Riesa but not destroy the rail bridge nearby?
It depends on the definition of "nearby", everything closer than 3-5 km to the target will be irreversibly damaged anyway.

No, the real reason is increasing effectiveness of the weapon, if your aim is improved two times, you can put your bomb two times closer to your target and you need the bomb FOUR times smaller. Which means you can cram another three of such bombs in the same payload, or make your missile smaller and harder to hit by ABM, even if it's a strategic nuke. Compare Topol to that fuckhuge old generation R-36A/RS-20A/SS19.

>Thermonukes are most efficient
Now that humanity knows enough about nuclear physics, we don't have to explode every new model to check for parameters. So nobody really knows, but the calculations should indicate that new generation is more effective, which means more material reacts, which means less pollution per 1kt yield.

As far as I know, the doctrine has been shifting also, there's no reason to threaten so much population with nukes, just the minimum reasonable amount of casualties to eliminate enemy's essential infrastructure. And only until the balance of power is destroyed, after which EVERYBODY in the world are threatened by the nuclear bombardment - equally.

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7268 No. 7268 ID: de9789 hide watch expand quickreply [Reply]
If I ever acquire a time machine, the first thing I'm doing is going back in time and killing the fucking cunt that invented Torx screws.

"Less susceptible to stripping" my god damn ass.
36 posts and 4 images omitted. Click Reply to view.
>> No. 7312 ID: e1463b
Nigger, you're an assembler, of course you love torx.

Guys, your autism is showing, coin slots is great for .22lr bottom metal.

Everything has a fucking place y'all.
>> No. 7313 ID: 6d6cb1
File 144013770326.jpg - (167.00KB , 650x429 , 42a.jpg )
>Everything has a fucking place y'all.
You're absolutely correct.
>> No. 7314 ID: f2c4ed
I only assemble things after we've done the repairs. One day it's "Depanel that whole wing", the next it's "lube the shit out of everything", another it's "go fix that one tiny thing that QC found",and then it's finally "go repanel it."

Speaking of which, last night I learned just how prone to galling titanium is. I got to fuck up a $327 titanium bolt with a $16 steel self-locking nut, and my TL was like "it happens...regularly. Go get another one from parts."

A standard hex-head bolt is the master race of all fasteners, but they don't come in a flush version.
>> No. 7315 ID: f3d37a
>googles specs on Torx screws
>T4 still larger than 1mm


stop being so hamm fisted.
>> No. 7403 ID: 0dcdc8
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>"Less susceptible to stripping" my god damn ass.

If you use the wrong size bit consistently or try to force it with a phillips then that is on you.

You can also go non-screw up Robertson with the flathead option.

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7316 No. 7316 ID: c4277d hide watch expand quickreply [Reply]
Okay, so I know that out of the box, its pretty gimmick-y, but Whats Opchan's opinion on the Amazon Fire Phone, if, say, you rooted it, or at least installed the google suite of apps? I've been looking to upgrade from my Moto G (1st gen 4G LTE), and While I was waiting and saving for an ASUS ZenFone 2, The Fire Phone just came up on Choxi for $111 shipped. That's a pretty astounding deal for a phone with its specs.

tell me why I shouldn't buy a Fire Phone for $111, over waiting another month to buy an ASUS ZenFone 2 for $200.
7 posts omitted. Click Reply to view.
>> No. 7366 ID: fb3bdd
Can confirm, for ~$250 (probably less now) the Moto G is excellent.
>> No. 7370 ID: c4277d
Considering I currently have a Moto G, its REALLY not excellent. Maybe if you have the 2GB ram 64GB storage version of the newest release, maybe, but thats still a $250-300 phone, and I can get an ASUS Zenfone for that...
>> No. 7371 ID: 360825
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Found some prices for about 140-150 USD for the GSM LTE version. Rootable and the latest Cyanogenmod version supports it.

>> No. 7380 ID: c4277d
Thats the one I have, it a shit. 2/10, wouldnt use again
>> No. 7385 ID: 360825
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Well, there's always Project Ara ara~.

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7379 No. 7379 ID: 360825 hide watch quickreply [Reply]
Old, but important:

Oh, and as a reminder:

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7244 No. 7244 ID: de9789 hide watch expand quickreply [Reply]
>Shawyer has often been dismissed by the research establishment for not having peer-reviewed scientific publications, but White and Tajmar have impeccable credentials that put them beyond cheap dismissal and scorn. Physics is an experimental science, and the fact that the EM Drive works is confirmed in the lab. "This is the first time that someone with a well-equipped lab and a strong background in tracking experimental error has been involved, rather than engineers who may be unconsciously influenced by a desire to see it work," notes Wired referring to Tajmar's work.

>Hacked has obtained a copy of Tajmar's Propulsion and Energy Forum paper, co-authored by G. Fiedler.

>"Our measurements reveal thrusts as expected from previous claims after carefully studying thermal and electromagnetic interferences," note the researchers. "If true, this could certainly revolutionize space travel."

>"Additional tests need to be carried out to study the magnetic interaction of the power feeding lines used for the liquid metal contacts," conclude the researchers. "Nevertheless, we do observe thrusts close to the magnitude of the actual predictions after eliminating many possible error sources that should warrant further investigation into the phenomena. Next steps include better magnetic shielding, further vacuum tests and improved EMDrive models with higher Q factors and electronics that allow tuning for optimal operation."


So the EM Drive works in vacuum... aaaaand it looks like it might actually work as advertised.

Well, it's not everyday you get to violate Newtonian physics. I was kinda suspecting this would fizzle out into vaporware or something (still could, as they say in the article they still have further testing to do before it's confirmed 100%), but... hot damn.
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>> No. 7266 ID: 9aea35
I'm not a physicist, but could it have something to do with plasmon reactions? It might not be truly reactionless
>> No. 7267 ID: de9789
>It might not be truly reactionless

Well, that's the thing that has the scientific community's panties up in a bunch. From what I can tell, there's a bit debate over whether it is meeting the definition of "reactionless".

EMdrive proponents say that the drive is actually not reactionless, and is simply interacting with a medium that we don't understand (like quantum particles) and it's not reactionless, it just seems that way from our lack of understanding.

Skeptics claim that the drive, if it were to function, would be reactionless and that's why it does not actually work. And that something is just interfering with test results that will eventually be fleshed out.
>> No. 7279 ID: 381ee6
Well either way if it's real this is the most efficient space propulsion ever devised... thanks Brits!

Shit they also invented that earth-orbit jet engine SSTO thing right? They're really on a roll
>> No. 7287 ID: e2a7a8
Unfortunately, despite their apparent brilliance the British space industry is perpetually starved of funding.
>> No. 7306 ID: c6a4c8
I thought pretty much everybody came down on the side of this thing working on quantum tunneling?

No. 7304 ID: df12a0 hide watch quickreply [Reply]
  ...one giant leap toward Mankind's demise.
>> No. 7305 ID: 399414
All of these people are going to die before that happens

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7243 No. 7243 ID: f44962 hide watch quickreply [Reply]
Due to a spot of bad luck with a pier an open pocket and my cellphone I'm now an owner of a brand new Galaxy S6. Also purchased pic related as well. I'm just now setting the thing up and will post a mini-review once I get a bit of experience in. Any questions that you might want to ask can go in this thread, You can also talk about VR in General. My intention is to update my rig and pre-order the HTC Vive on the desktop side.
>> No. 7250 ID: f44962
Initial observations:

-I don't know if it's me but the screen door effect is real and somewhat distracting I would liken it to looking at the world through a very fine mosquito net, it can be ignored and you can forget it but it never really goes away.

-Chromatic aberration at the edges of vision due to the lenses, not really distracting and the "sweet spot" is large enough to make this a very minor issue.

-I did experience some very mild nausea with a stereoscopic 360 degree video, this was probably due to using the Gear VR for an extended time the first time I tried it. subsequently I used the Gear VR for about an hour and a half and did not suffer from nausea again.

General impression

-The 360 degree videos and pictures are awesome though the resolution is tad too low still.

-Watching movies in the Oculus cinema is rad, no distracting audience, the Gear blocks out all external sources of light and a good pair of headphones takes care of the rest. The only downside is the that the resolution of the virtual screen is not quite high enough to get a truly authentic movie experience but it's damn close.

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>> No. 7253 ID: 72eee7
How does the lack of head tracking feel on the Gear VR?

I'm looking forward to the HTC Vive, currently I have a DK2, the screen door effect is minimal, but the resolution is still poor.
>> No. 7254 ID: f44962
Cant really comment on the lack of head tracking since I have no experience with system that has head tracking. I've only done basic stuff like 360 videos, Oculus cinema and bluVR. I certainly think it would enhance the experience. Nausea has not been a problem but I've not tried the more "rough" VR experiences like Dreadfall. I'll post something up when I do.

No. 7002 ID: 2dcca3 hide watch expand quickreply [Reply]
  So... Coulomb explosions are the reason why.

All from alkaline metals exploding in water. And, the team also found out how to effectively suppress such explosions.

6 posts omitted. Click Reply to view.
>> No. 7166 ID: 381ee6
File 143274597183.jpg - (68.42KB , 874x555 , Air_pistol_JPG.jpg )
>"ow, that stings, wtf is that suppo-BOOOM!"

would make a gud varmint round
>> No. 7173 ID: fa19eb
Tangentially related.
>> No. 7175 ID: 38c3cd

The issue I see with this is stability. If you could figure out some sort of sodium (or other alkali metal) compound that would only react with a specific (probably aqueous) reagent to produce a similar reaction then maybe it could work but as it is pure alkali metals are pretty sensitive to humidity and the like and would be a poor choice for a power source.
>> No. 7238 ID: 7a62af
You've seen 3d-printing cartridges, right? Just have a bunch of sodium wire coiled up and packed in grease. if you can get the grease off the wire while it's being fed into the guts, there's no reason to worry about humidity.
>> No. 7241 ID: 67299a
So, design a print head with a felt tip marker style alcohol tip, so that wire feeds through it, into the head, then into the bullet, then load it.

Would be easier, tbh, to buy sodium wire chunks, and swage them. Then, tumble them with a light coat of brittle varnish, and good to go to load.

You could design a hollow point, so that when the petals open, it exposes a lithium 'pellet'. If you make it a liquid nougant center, it'd work.

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7236 No. 7236 ID: 062e74 hide watch quickreply [Reply]
Cant believe none of you have posted this yet.
>> No. 7237 ID: 5bb72d
We have /stem/ is dead board so it was posted elsewhere.

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