Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?
For the out-of-band Slashdot experience (mostly headlines), follow us on Twitter, or Facebook. ×

Comment: Re:The Apollo Engine (Score 1) 17 17

Not to mention that each piece of hardware is built with the assumption of there being extant suppliers for its component parts. For Apollo hardware, this is rarely true, so you'd have to retool and test for each part. The sad thing is it'd actually be cheaper to build a brand new Saturn-V equivalent than to make an exact duplicate.

This is actually one of the sorts of cases where 3d printing (no, generally not things like plastic filament extruders... meaningful printing, like laser sintering, laser spraying, etc, as well as CNC milling, hybrid manufacture techniques and lost wax casting on a 3d-printed moulds) has the potential to really come into its own: all of these sort of parts that you only ever need half a dozen of them made but might some day suddenly want some more a couple decades down the road. Another interesting advantage on this front is also that of incremental testing - I know of one small rocketry startup that has set themselves up to sinter out aerospikes in an evolutionary fashion - they print one out, connect it straight to test, measure its performance, scrap it and feed that performance data back into the generation of the next printout, in a constant model-refining process. Combustion simulations can be tricky to get right, but real-world testing data doesn't lie ;)

Comment: Re:Pao Wants "Safe Spaces" for Shills and Ideologu (Score 0) 109 109

Reddit has unbelievable traffic and reach, so stuff that earns popularity there gets spread to virtually everywhere and everyone.

[Remainder of tinfoil hat rant snipped]

That's what the Reddit hivemind thinks... In reality, not so much. Reddit only makes the news when it's on fire, again.

Comment: Ouch (Score 2) 21 21

I actually lost IQ points reading that mess...

I should have stopped at the third paragraph,

Charcoal, in this case, is not the briquettes you use on your grill, which often contain no actual charcoal, but is the carbon residue left behind by organic matter (like wood) once it has been charred (or pyrolyzed)

Um, who is this moron? Yes, charcoal briquettes contain actual charcoal. They most certainly do contain (among other things) "the carbon residue left behind [etc...]". The rest of the article, breathless clickbait written at the kindergarten level, just goes downhill from there.

Looking at his submission history, he has a record of submitting equally moronic content all from the same site. (And one comment, over a year ago.) Pure slashvertisement.

Comment: Re:Americans setting off fireworks... snicker (Score 1) 21 21

Whoops, I was wrong - it's nearly 2 kilograms per person here, not 1. But you've still got us beat :) (Also, it looks like America is up to 207 million pounds of fireworks per year, a big increase... so 285 grams per capita per year).

I just think it's really weird how Americans see themselves as a major-fireworks nation when they set off so few.

Comment: Re:Americans setting off fireworks... snicker (Score 2) 21 21

Oh come on, what's New Years without an ER visit? ;) But yeah, I know some of your places have fireworks bans due to drought and the like.

In case you're curious, here's what New Years looks like here. It goes on at that intensity for at least half an hour, half intensity for maybe an additional hour or so, quarter intensity for another hour, etc. All this comes after the "brennur", which is about a dozen house-sized bonfires scattered all over town.

Basically, if one can make it burn or explode and there's nobody who objects, we'll set it on fire. Often while drinking heavily ;)

Comment: Americans setting off fireworks... snicker (Score 2) 21 21

New York City for example usually sets off 20-25 tonnes of fireworks on the 4th of July. Meanwhile, little Reykjavík sets off about 300 tonnes on New Years' Eve. Americans average shooting off about 200 grams of Fireworks each over the course of the entire year, combining fireworks shows, personal usage, etc. Icelanders average about a kilogram per person just on New Years'.

And I know it's not just Iceland. I had a friend from Peru who moved to America and was terribly disappointed by what passed for a fireworks display there versus in her home country. Seriously, aren't you guys supposed to be the ones who enjoy blowing everything up? ;) Or do you get it out of your systems in the Middle East? ;)

(Note: not meant as an insult :) )

Comment: Re:Profit over safety (Score 1) 122 122

Fukushima had generators that were floodable and a sea wall that was too low. Neither of those would be allowed for US plants (the generator issue was called out in the US and corrected years ago). The plant ran on battery backup for a day, but then was powerless. If they hadn't lost power, there would have been no meltdown.

I don't know about Besse (in fact, first I've heard his name), but at least the NRC has some teeth. I still think the nuclear lobby influences them, though. Vastly better than the AEC, however, where they had the dual job of promoting and regulating nuclear power, which created a conflict of interest.

Comment: Re:Antropologist (Score 1) 122 122

And the article then didn't have a single thing about nuclear accidents. It was about some protesters they broke into an enriched uranium storage facility's grounds. Had these been highly skilled terrorists, they'd need to break into the actual facility, kill or disable the guards, steal the uranium and escape before reinforcements showed up... and then would have to assemble a bomb with it. A dirty bomb with uranium would be a waste of time, as you'd do vastly more damage with conventional explosives - with a dirty bomb you want a fast alpha emitter like polonium that gets breathed in or eaten or a fast decaying gamma emitter (almost certainly too dangerous to handle without special equipment) if you want to do any damage at all with the radioactive part of it, so we're talking about a real nuclear weapon. That means either smuggling the uranium out of the country and assembling the bomb and then getting it somewhere for detonation or attempting to secretly manufacture and detonate it in the country with every authority in the country looking for you. Oh, and the uranium you stole needs to be enriched enough to be used in weapons. If you got the wrong stuff, it may only be useful for power plants.

I don't know about you, but IMO we're hitting impossibly unrealistic scenarios.

Comment: Re:Who watches this crap? (Score 4, Interesting) 129 129

Are you new to coding? Have you ever wanted to write a program or app, but didn't know where to begin? You can read books about programming, but that only takes you so far. Sometimes, you just want to see how other (successful) people do it.

Every single book I have read about C++ programming tells you how the language works, but suspiciously says something to the effect of "Using your compiler is beyond the scope of this book".


You can learn how to program, but you will never see the rewards of your effort because you don't know what linking/compiling is or what object/executable code is.

Comment: Re:Cell phone uses IPv6 (Score 1) 275 275

The addresses are longer, so there will be a bit of a hit because of that, but I suspect the routing table for IPv6 between you and that site has fewer nodes and those nodes are overloaded. Either that or the government is weighting certain nodes to route your data to specific places like England and back so they can vacuum it all up and use it for domestic spying. That would be the paranoid option, as they definitely wouldn't do something like that. Or would they?

Comment: Re: It's the end of the world as we know it! (Score 1) 275 275

I live in a moderately large city and a densely packed suburb, but have had that problem for years, but only because I refuse to do business with Comcast. The providers outside of Comcast seem disinterested in updating any hardware in the neighborhood because we lack businesses. Comcast, OTOH, has rolled out new services to my neighborhood first, exactly because we are densely packed and they care less about business services than selling TV package bundles (internet is secondary, businesses are a bonus, but not a big TV draw). CenturyLink has added service to the north, south, and west of me almost certainly because they are densely packed with businesses.

That said, Comcast's TV packages were too spendy for my tastes, and that caused me to go down the rabbit hole of not bundling with them, and then they charged me $10 a month for not doing that, and then that makes CenturyLink cheaper for internet, and so on. I honestly think it should be illegal to bundle your own products at a discount. It is anti-competitive to undercut competition only through bundling your own products, and especially when the competition doesn't offer the same range of products because you're a regulated monopoly (i.e. nobody else can run cable lines by law - they have a monopoly on this).

Comment: Re:It's the end of the world as we know it! (Score 1) 275 275

Now someone convince my ISP to upgrade their damn hardware already (PPPoE that only supports IPv4). My machines and domain were configured to support IPv6 for a decade-and-a-half now, but only one ISP supported it. Had to drop that line (run by COVAD) due to the expense and not needing 99.9% uptime requirements (because I stopped running a business on it - it now runs my hobby site).

Comment: Re:Inspire kids to be the next Woz, not Jobs (Score 1) 231 231

The irony is that it could be seen as "karma" that Jobs basically committed "suicide by woo", refusing to treat his cancer with any recognized scientific technique for most of a year and instead trying pretty much every technique in the book popular among the sort of person who typically believes in karma.

So perhaps all of the woo stuff actually works, but it plays in with the laws of karma ;)

Have you ever noticed that the people who are always trying to tell you `there's a time for work and a time for play' never find the time for play?