251 posts • joined 19 Mar 2012
His point is that theres already a LOT of Uranium in seawater, putting some more in doesnt matter. The problem in nuclear accidents isn't the big chunks. You can pick those up with a robot. It's the dust and gasses that are much harder to contain. Venting a radioactive gas underwater is just going to get it dissolved in seawater, where it'll very soon be so diluted it's no longer dangerous.
Enriched Uranium is not actually all that much more radiactive than natural uranium. The only difference is the concentration of fissile U-235 instead of the non fissile U-238. Modern Low Enriched Uranium is only about 20% enriched. Which theres 20% more U-235 in it compared to natural uranium. 20% more of a TINY amount is still a tiny amount.
The danger with used nuclear fuel is not the uranium. It's all the other fission products that come into existence during the fission of Uranium. Especially the actinides are a problem. Most of these however are pretty shortlived with a half-life of a few days to a few months. Meaning they'll be nearly gone within a few years.
Note also that the radiation in the Fukushima area deemed to be "high" is in fact, in the grand scheme of things not that high. Most of the area is at or just slightly above the background radiation in some other areas of the world happily occupied by non-cancer riddled human beings. (Like the Rockies, which are very rich in natural uranium).
Re: Helium is *very* hard to seal systems against
Jup, Helium is a pain in the rear end to work with. Not nearly as much as Hydrogen though. All the leaky goodness of Helium, with a dash of explosiveness (with a very low LEL of just 4%) thrown in for the fun of it!
Mission got scrubbed for today
Unfortunately it was just announced a technical issue was encountered (no further elaboration so far) and the launch was scrubbed for today. They're venting/draining propellants now.
Re: Why the white covering?
Thermal insulation. When working in sunlight the thermal stresses involved could damage the structures due to uneven heating of components. So things are insulated to provide protection against direct heating and keep components on a more constant temperature.
I shall make a sacrifice
to the weather gods. So that they may smile upon your endeavour.
Re: I've said it before and I'll say it again
I'd say the definition of what is a "commercial drone" has nothing to do with the actual aircraft! Much like a Private Pilot License holder is perfectly fine flying around a few friends for free but is not allowed to fly people around for payment (even a fuel compensation payment from friends would have to be done "under the table" as stricktly speaking it counts as payment) as one needs a Commercial Pilot License to do that.
Anyone doing anything in the name of a company, is doing work under a contract or is paid for it is operating commercially. (Ofcourse, putting this unambiguesly into law is going to be very hard indeed)
I've said it before and I'll say it again
No aerial vehicle (be it a multicopter or fixed wing) should be used over or near a crowd/people. Flying so close to someone that a collision is possible (even if "a hacker" WERE involved) should be seen simply as reckless endangerment at best. (Personally I'd be more inclined to go with attempted manslaughter tbh)
These multicopter operators seem to be completely oblivious to even the most basic rules in aviation (including those established in the remotely piloted aircraft community) Most of them seem to be completely unwilling to even think about the most basic risk mitigation, airspace awareness and emergency preparedness.
IMHO any operator of a multicopter larger in weight than say 500 grams or with a span larger than 500 mm should need a permit and a license. Pull a stunt like this and you lose that permit and license, never to be returned. To acquire the license the operator will have to show he's in full control of his drone, knows how to read an airspace chart and avoid closed airspace, is capable or regaining control after an upset (heavy gust of wind, loss of control signal, etc) and is capable of judging and maintain the safety of himself and any spectators at all times (Because screw the airframe if it comes to the safety of people or animals). Basically anything a "real, ass in the air" pilot has to show before he is allowed to do commercial piloting work. The permit would require proving that the footage cannot be obtained by a safer method, that the aircraft is safe to use beyond a reasonable doubt in the operating area, that any spectators are not endangered by the operation of the craft.
There are simply too many cowboys operating these craft. There are some who do know what they are doing, but they are a much rarer breed.
Re: Just to be pedantic
If ingested oraly most venoms are indeed not poisonous. Poisonous means it's bad for your health if ingested, venomous means its bad for you if introduced to the bloodstream. They are 2 different things!
Just to be pedantic
Those spiders are venomous not poisenous. (Though I would not recommend eating them)
Grammar nazi icon, obviously.
A rare state of mind for me. I am cautiously optimistic about things working out. It's going to provide some proper data in any case.
I just hope the forces unleashed on the Punch electronics box when that lovely piece of pyrotechnic excelence starts its powerful thrusting are not enough to completely tear it to bits.
Launching both flights at the same time is good in terms of time schedule. But if the Judy flight proves the heating works, but Punch fails to deliver a fast moving spray of hot ejaculate another flight will be needed to see if the heating makes any difference.
Oh come now
do you really have to keep us dangling like this!
Zuckerberg is missing it... If VR is ever to take off I think it would be the gamers who would make it happen. This tech isn't going to appeal to most "non gamers" and casuals unless it's dirt cheap and there is a VERY clear advantage to having it. It's not going to be dirt cheap and there is no clear advantage when this starts outs.
For this kind of tech you want a target demographic that is active to pick up new tech, use it heavily with ever increasing amounts of creative applications and willing to spend quite a lot of dosh trying out said new tech. IE you want gamers.
I would think they would atleast put some sort of navigation light system on. I would think a green stripe down the right arm, a red stripe down the left arm, a double white light on top of the helmet and a short yellow stripes down the back and front of the legs near the ankles would do nicely. (This matches the color scheme now used on for instance the Cygnus spacecraft) This also complies with current naval and aeronautical conventions.
I'm also highly skeptical any astronaut would WANT all those lights on his suit when working on on a spacecraft in the dark. Things would be hard enough without the glare from a chest mounted lighting panel screwing up your night vision
Re: Facebook is dying, and it's dragging many companies down with it
And of course I notice my typo AFTER the edit time has elapsed. Really, past me: "Goodbuy"??
Facebook is dying, and it's dragging many companies down with it
This seems to be nothing more than an attempt still appear relevant and "going strong" to investors and shareholders. There have been many many examples of companies doing this. Things have been going decent, MASSIVE amounts of shareholder money are available, but the outlook begins to falter. To keep the shareholders happy the company starts buying up other bussinesses to keep up the appearance of growth. This works for a while (Usually while the CEO and board are stuffing their pockets to breaking point) and then the companies implodes. If this happens to Farcebook (And I have no doubt it is going to implode within the next 5 to 10 years) it'll take Oculus down with it.
Goodbuy Oculus, we hardly knew you.
Also, from the comments in every message I've seen about it, it appears the ENTIRE target demographic went: "Well, up yours too then!" upon hearing of the news. I've yet to see a single positive message from anyone who would consider buying a VR set.
Re: VR (motion) Sickness
You are aware that you have only HALVE that 1080p per eye? And that most VR systems are now looking at 1080p PER EYE? Individual pixels WILL be easily discernible at 540p at that size.
VR (motion) Sickness
Those vrArse units are going to make a lot of people very sick. At those distances most telephone screens just don't have the resolution to give a good image in the first place. Then display persistence comes rearing its ugly head. Coupled to the slight lag and incorrectness of the head tracking and it'll have a lot of people losing their lunch in a short while.
Shipping good quality cardboard and wood chips to china has more to do with the lack of high quality fiber for making paper and cardboard in china. If you've ever had to deal with shipments from china you'll have noticed their cardboard comes only in shitty, terrible and already disintegrating qualities. Theres few domestic sources of high quality wood fiber to make high quality paper and cardboards. This means there is a high demand for recyclable fibers. And this in turn means shipping companies can make a bit extra by shipping recycled wood and cardboard fibers back to china in otherwise empty ships.
How in the world does Morpheus rhyme with Oculus? They're not even in the same ballpark!
I'll join in on advising some CoG checks before attempting to fly.
Other than that, looking very good!
Paraglider canopies suck for any sort of long distance flight. They lack penetrating power when flying against the wind. The single seat paramotor units already have a hard time with a 5 knot headwind. I've seen one trying to get into a 10 knot headwind, with full power, and barely have any forward groundspeed at all. Also, good luck taking off in one with ANY sort of cross wind component!
Re: In the words of Ron Swanson:
I prefer the description given by Jeff Dunham: Anything I can easily drop-kick over my back-fence, not a dog!
Not fully convinced
as title, but then again, I'm always a bit of a pessimist. I appreciate the article to specifically adress the issue! The reason of my remaining doubt is that CHAV was a relatively low speed vehicle. LOHAN will have to survive a lot more forces and a lot higher speeds.
In any case, there is no way back now. All that remains to do now is to wait and see how it performs. Although I'm sure flights aren't cheap I'm sure there can be more than a single flight if it ever comes to it. (Though a second or more flight might take a while to save up)
Re: Too late but still
I'm not sure glueing the lens directly into the body is going to solve that issue. The lens itself could very well still fog up. Not to mention, fog up on the INSIDE of the lens assembly.
Furthermore, you now expose the lens itself and the plastic of the lens housing to the bitter cold of direct exposure to the outside air. Lets hope the thermal stress doesn't break anything.
I know, I sound like a cynical pessimist. I AM.
Too late but still
I realize this is too late, but the industry standard in these kinds of cases (or in case of sensors and cameras looking into a vacuum vessel as I normally deal with) is to mount a viewing window for the camera to look through, allowing the camera itself to be removable.
Otherwise, keep up the hard work! I'm looking forward to some actual test flight footage!
Meh, sounds like my dayjob...
But it's still no less impressive. The most difficult bit is getting that sort of accuracy without being attached to anything. Newton's third law is a bit of a pain in the neck in these sort of situations.
Re: Early Access
I bought KSP a while ago and thorougly enjoy the hell out of it. Yes, its very rough around the edges, but it's still quite fun. The early version of career mode also reinvigorated my enjoyment of the game. Mucking about in Low Kerban Orbit after having all the doodads just available to you is a nice change of (s)pace.
Fanboi icon: reasons are obivious I'd think :)
Re: Of course they are safe.
How is that ofcourse?? And how is it rediculous? For all we now, the change in gravity could affect how the roots transport certain chemicals to the leafs, causing them too be too acidic or toxic or whatever for human consumption. It's not rediculous, its essential research.
Re: Why's it always KickStarter these days?
Viability after the kickstarter depends mostly on how big the demand is. If the kickstarter itself fills most of the niche market, then there is no viable market left to expand into. Furthermore, does the kickstarter take into account the setup of tools, further development, stock purchase for a next production run (Because after kickstarter you'll have to do an advance run with no idea how many you are going to sell and with no pre-payment to fund it), etc, etc.
In my humble experience as an engineer, the problem with product design is very often not the design itself. Its producability. Efforts have to be made to keep setup and repeat costs as low as possible, independent of the actual material cost. (I've had products where setup and start-up costs per product where higher than material and run costs. Especially small/short production runs suffer from this)
Re: Want a real laugh, ship internationally.
For even more of a laugh, order something from one of the gazillion chinese drop shippers. You'll quite likely get your parcel with SWEDISH!! postage stamps. This made me do a double take the first time I got something in.
Re: Argument seems illogical
Or a flywheel assisted generator. (A large flywheel is kept running by a low power system, storing enough energy to start the diesel generator within seconds and provide power in the meantime) I've seen systems that can take over power generation fast enough and with matched phase so the electrical systems wont even notice.
Re: I wonder where that came from....
Your link is incomplete, and I can't find any reference to it on the Reg at large or the forums.
I hope that bench is stand-up height
Because sitting down behind a laptop with that shelf in the way is going to be a pain.
It's clearly a concept developed without bothering to take practicality or cost into account. As said, why bother building a big heavy expensive shelter that can only charge that particular car? Putting more surface area of cheaper panels on the whole roof of the house and/or shelter is going to be much more efficient.
"Isn't Where 2 better since Google bought it and called it Google Maps?"
Since you are talking about iOS and standalone apps, I'll assume you are also talking about the Maps app. In which case: the latest versions of Google Maps suck hairy donkey balls! They suck to such a degree I don't believe a standalone app would ever dare design it that way. And there are many many examples like it. Siri is the exception that proves the rule.
Re: Think they're against GA?
"Lots of returns in the same area shouldn't be a problem, although ATC may want to put a filter on that area if it gets too much."
Common sense says this shouldn't be a problem, yet the introduction of mandatory mode-s on gliders has shown it IS. Atc can't filter them properly and gets overwhelmed by the many returns. In the meantime most heavy metal TCAS systems filter GA signals, meaning the mandatory mode-s transponder has given us a negative safety benefit.
Re: Key add-on I want to see
Or just incorporate a semi-decent IMU in the system and you can get quite accurate internial navigation with just a bit of math.
Re: Caveat Emptor
"If my dock or car mount breaks then I have to bin the device and buy a new one. It's a proprietary connector - not USB. They clearly hate customers."
I have no idea what you are on about here. The charger connector on ANY TomTom over the last few years has been a standard USB mini B plug. Sure the plug is shaped a bit funny to recess into the housing a bit, but its still standard USB mini B.
Also, China is your friend. You can get a cradle or dock or charging cable for any of the old model TomToms for far cheaper than the original from ebay, banggood, DX.com, etc. The quality will be not all that great, but if it works, who cares.
Across the channel
This malarky has started on this side of the channel (In the Netherlands) as well, with a lot of radio commercials. Everytime I heard one I was thinking: "Why would I want tech that is in most ways exactly the same and in practical use often inferior?". I just don't see DAB as adding anything useful to already existing FM broadcasting.
And thus another stroke
of the saw Facebook is using to cut its own legs out from under it.
FB is really hard at work finding the line between people staying because they don't care enough to leave and people fleeing to find ANY alternative. The problem is, once they cross it, they'll be doomed to ever diminishing returns until the company no longer exists or is sold no matter what they do after that.
Note to travelers
If you ever find yourself in a city filled with smog, know that those surgical masks often seen worn by chinese locals do bubkiss to cut down on particulate inhalation. Very few of them are intended to be used to keep the wearer breathing stuff IN. Most of them keep the wearer from exhaling moisture droplets and other nasties OUT onto objects that don't agree with them.
There ARE special masks designed for very small particulate like smog and asbestos, but they are far more expensive and look different.
Other POI nearby
Kew Bridge Steam Museum.Just a bit away on the other side of the Thames. For those mechanically inclined and interested in steam power it is highly recommended.
AC: "Ladies and gentlemen, please keep your seat belts fastened in case we have to engage in some violent manoeuvres to avoid on coming aircraft. There has been a little glitch in Air Traffic Control that I am assured will be fixed shortly. If any of you have concer..............."
"For fcuk sake! turn left! TURN LEFT!"
If you were to ever find yourself in that situation you should turn RIGHT! As the other sod heading for you should also be doing. (Them's the laws of the sky and the agreement between all airmen) Unless ofcourse you find there is no other option, and pray to god the other guy doesn't turn right instead,
Re: Reinvented cuckoo clock
This was my thought as well. Why not just use a standard timing belt? Cheap, mass produced, made to take a beating, available everywhere, and you could use an old worn one that can no longer do service in a car.
Re: not about the science, just a pissing contest......
NASA can do it, it's just that it's budget and plans aren't decided by scientists or even managers (who are implied to know SOMETHING about that which they manage) but purely by politics. Politics and bullshitting between politicians. NASA has lacked focus and drive after the Apollo program shut down purely because it hasn't been given a consistant goal.
Looking at all the different fields NASA is active in, its still getting an amazing amount of science and development done. But because there is so much sway in what the politicians think NASA should be doing, there is a lot of "startup, development, shutdown" happening that means a lot of promising research is left on the cut-backs spreadsheet.
If the US goverment were to tell NASA tomorrow to: "Get to mars, design and build us a new everything just for this purpose", they could do it. Pretty fast too probably.
Firefox portable on a USB drive
Problem solved. Works wonders in the workplace too.
I've seen completely function gearboxes, ballbearings and all, being formed in 3d printers. We're way past a simple nut and bolt! (This does require a support material that can be removed using a solvent or a powder supported printing process)
Good show indeed old chaps!
Looking very good. The only part I have some doubts about is the contruction of the bayonet closure for the nose section. Those sharp inside corners look perfect for the start of stress fractures.
The surface finish could do with some work as well. I find it to be a bit disappointing, I had expected a slightly smoother finish.
Am I the only one hoping
they won't make a massive announcement for Halflife 3? Just a "ohh, btw guys, we're releasing HL3 in November. Just FYI"
Re: Rocket Science is HARD
Rocket SCIENCE isn't all that hard. All the basic principles are clearly understood and most second year engineering students will probably be able to do the needed maths. Rocket ENGINEERING is where the challenge is!
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