(Part 2) Top products from r/EngineeringPorn

Yes! Well reminded, I’d found it then gone off on a tangent and bought a book called “the boy engineer” which is pretty interesting too.

The cheerfully-named “nuclear war survival skills” book by the Oak Ridge national laboratory is what I was thinking of.

Here’s a link - Nuclear War Survival Skills: Updated and Expanded 1987 Edition https://www.amazon.co.uk/dp/094248701X/ref=cm_sw_r_cp_api_i_Mi6BCb8DZ4HT9

The YouTuber that makes the auger is called chucke2009.
He says that he actually got the idea from a book published by a welder manufacturer, so I may be wrong about where it came from, but the above book is pretty interesting none the less - I shows how to build a wood gasifier to run a generator, things like that!
He also builds a hench bench grinder from a truck axle, that’s pretty good too.

>To the extent that Huawei copies other parties' IP, it is unlikely to suffer consequences in China because it does not subscribe to international IP norms.

Yes but the Chinese market is so big they don't care and it is only growing. The US market is also huge but we already are disinclined to purchase Huawei products, yet they are still top 3 in phone sales globally.

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You asked how copyright laws handicap innovation? I'm speaking on the overall technological innovation of a society, currently the US' overall technological innovation is being hindered, in part, by copyright laws such as the DMCA and DRM.

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In the book, AI Superpowers, the author, Kai-Fu Lee, argues much the same, but in the specific lens of Artificial Intelligence. He goes in to explicit detail about many examples, much better than I could explain them. There you will specifically find the examples you demand, then you can go and tell him he has no idea what he is talking about.

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Edit:

https://www.eff.org/press/releases/eff-lawsuit-takes-dmca-section-1201-research-and-technology-restrictions-violate

https://www.eff.org/cases/green-v-us-department-justice

https://www.eff.org/press/releases/eff-wins-dmca-exemption-petitions-tinkering-echos-and-repairing-appliances-new

https://www.eff.org/deeplinks/2018/08/topple-track-attacks-eff-and-others-outrageous-dmca-notices

https://cdt.org/insight/the-cyber-hard-questions-in-the-world-of-cybersecurity-research/

https://cdt.org/blog/taking-the-pulse-of-security-research/

https://www.eff.org/deeplinks/2018/12/closed-proprietary-felonious-toxic-rainbow-locked-technology

https://cdt.org/files/2018/04/2018-04-09-security-research-expert-statement-final.pdf

https://www.eff.org/deeplinks/2019/01/anyone-even-government-can-ask-patent-office-review-invalid-patents

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Interesting fact: The turbopumps were designed and manufactured by Pratt & Whitney. Rocketdyne's designs were always marginal and after the Challenger disaster Pratt was asked to redesign them. They were initially reluctant because they were in the running to build the shuttle motor but felt politics left them on the outside. It's in a very good book I have called "Advanced Engine Development at Pratt and Whitney: The Inside Story of Eight Special Projects, 1946-1971" with a bunch of other interesing stuff like a hydrogen powered turbojet for a spyplane and a high powered chemical laser.

https://www.amazon.com/Advanced-Engine-Development-Pratt-Whitney/dp/0768006643/ref=sr_1_9?s=books&ie=UTF8&qid=1543586738&sr=1-9&keywords=pratt+%26+Whitney

I found something similar but the tracks and double flywheel of the video is much more awesome.

http://www.amazon.com/Kikkerland-1589-Zecar-Windup/dp/B000L2JVKW/ref=pd_sim_sbs_t_1?ie=UTF8&refRID=0K0JH4Q6HK3VV4HX45KV


I had a few of these Rev Tredz monster trucks when I was younger, they have quite a powerful flywheel.

http://www.amazon.com/Wheels-Monster-ATTACK-Official-Series/dp/B001MNX7FY/ref=sr_1_8?s=toys-and-games&ie=UTF8&qid=1413126689&sr=1-8&keywords=rev+tredz

That's an excellent idea, except for a couple of small points: Moscow is nowhere near the ocean. So to get that snow to the ocean would create a carbon footprint that would cause more damage than the amount of amelioration the snow melting into the ocean would provide. And that brings me to the second point. The amount of snow in Moscow is very small compared to the vastness of the ocean. It would probably not help "combat" rising sea temps overall, but it would lower the temp of the water where they dumped the snow in for sure. If you would like to learn about climate change from a respected professional, let me suggest Michael E. Mann. Have a great day and keep up that thinking stuff!

Found it through google using following keywords: "plan original tour eiffel"

If you like those drawings, this book is pretty neat

If you enjoyed this video you might enjoy this book: The Apollo Guidance Computer: Architecture and Operation.

https://www.amazon.com/US-Forge-99111-Grinding-Shield/dp/B000KKT6VY

Like that but with a safety rating.

I've got a Citizen that does that, and it's fuckin' great.

Despite this video's great optimism, the M16 was borderline rejected by troops on the ground for unreliability and the need for constant cleaning. Many troops wouldn't give up their M1s or M14s. A fascinating book on the US service rifle is American Rifle.

Use a small nail bar and a hammer. Then just use wood filler in the hole left by the nail. Sand over the wood filler a bit. Job done

Stanley CLAW BAR 10IN https://www.amazon.co.uk/dp/B000A24RCA/ref=cm_sw_r_cp_api_i_PmfxCb1QQZQW0

Ronseal Multi-Purpose Wood Filler - Natural 250g https://www.amazon.co.uk/dp/B001GU490U/ref=cm_sw_r_cp_api_i_yofxCbQKT07NJ

Definitely up to 1".

I'd be pretty sure there are some even larger ones out there if you know where to look, but thus far I haven't come up with any.

EDIT: Holy crap, Wikipedia says socket wrenches go up to "3 1⁄2-inch square drive sizes". Whoa.

I would say start with Griffiths Electrodynamics, and maybe a calc book, then go from there.

Perhaps they can finally answer a question for r/fountainpens: how many pages would 1 litre of Pelikan 4001 Black get you?

you're welcome

GEARWRENCH 1/4" 12 Point Ratcheting Combination Wrench - 9008 https://www.amazon.com/dp/B0002NYD44/ref=cm_sw_r_cp_api_i_G.tMDb9J0X6AB

Here's the 2019 version. Not much has changed.

Later in WW2, German U-boats were being decimated because they had limited range on battery power while submerged. They invented a snorkel device for the intake and exhaust to allow submerged running on diesel power.

The crews hated them because they couldn't track waves well enough. When a wave interrupted the airflow, every crew member paid the price with their eardrums.

PS. Iron Coffins is a good personal account of what it was like as a German.

You don't think it'd be better if we had diplomatic relations with those countries so that they trusted us not to build crazy expensive aircraft, and thus we wouldn't need to either? Don't you see how this is perpetuating the global military-industrial-congressional-complex? Which is terrible for literally everyone, except for political insiders, lobbyists, and employees at fraudulent military contracting companies.

Then again, most of your posts are about the F-35 and other killing machines, (/u/dragon029 is a fucking MOD of /r/F35lighting) which means that you're likely employed by the MICC that I rail against. Or a delusional sociopath. Or both.

Whatever it is, I'd be interested to know what kind of mental gymnastics you tell yourself in order to justify that it's "okay" to spend trillions of dollars on a weapon of war. Is the China/Russia military the only one? Or are there others? Lastyl, have you never listened to Eisenhower's speeches? Have you read this book? Or this one? Or are you also an anti-intellectual?

Requirements for gauge block wringing: Average surface roughness of at least 25 nm and flatness of at least 130 nm. The blocks do not need to be metal. It works even with clean blocks or under a vacuum. There is no or virtually no pressure required to wring blocks together. The strength from wringing two blocks can be as high as dozens of atmospheres.

Things this is not:

Van Der Waals Force/Gecko feet: Technically london dispersion forces. Between two flat planes with 10nm separation in a vacuum, the van der Waals-induced pressure is around .05 atm. This is two or three orders of magnitude too low. Its an additional order of magnitude lower under atmosphere. Additionally, the force is repulsive before its attractive.

Cold Welding: Cold welding only works with metals. Wringing works with any flat, smooth, hard surface. It also requires pressure, zero contamination, and no atmosphere. Also, cold welding would result in galling.

Magnetism/dielectric/electrostatic: Works with ceramic blocks, is independent of resistivity or electronegativity.

Some other kind of metal attraction/molecular attraction: These bond lengths occur over hundreds of picometers, and would be blocked by a film of any thickness or composition in between the blocks. Also beyond half a nanometer the force will be repulsive. In fact the longer the bond length, the more repulsive it will be initially. These bonds drop off with the sixth power of distance. (edit: straight from the mouth of the wiki: bodies have to be conformal to 1 nm or less to exhibit this.)

Casimir effect: Operates on a longer distance than van der Waals, and can cause pressures of 1 atm. at 10 nm. Still a little low to be the culprit. Also, as someone who worked in a nanotechnology lab, making devices that can fit in the space between gauge blocks- the Casimir effect is witchcraft and not to be trusted. By most formulations it would not describe what we see in gauge blocks. Among other things it should work MUCH more strongly for metals.

Surface tension: Maybe. But it doesn't work in vacuum or with clean blocks, so no.

Trapping a vacuum: No. If anything this should push them apart because you'll tend to trap air underneath the thing rather than trap vacuum. Also, the maximum force would be 1 atm, which is 50x lower than reality.

Trapped liquids: The idea here is that any amount of trapped liquid would try to vaporize if you pull the blocks apart, and since it doesn't want to do that the blocks stay together. This wouldn't keep the blocks together, just resist pulling them apart momentarily.

Personally I don't think we can say nearly anything about wringing without actual data, which I haven't seen. I suspect that it is mostly surface tension that does the high force stuff, and the effect is way weaker with clean surfaces, and that it probably has something to do with the casamir effect, and nobody is totally sure on that shit because it has confounded nearly every nontrivial experiment done with it. Primarily though- I'm not sure anyone has ever done an experiment with TRULY clean gauge blocks, which is way harder than you'd think. Dropping a block in acetone isn't good enough.