Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror
×

Comment Re:Very interesting, but (Score 1) 93

The process is discriminatory in the sense that whatever there is a greater amount of to start with will be replicated/amplified at a faster (also) exponential rate.

Also the samples are taken from the inside of bone/fossilized tissue that has undergone quite extensive cleaning prior to grinding/crushing and processing. It is possible though for contamination to occur at almost any point in the process.

Submission + - Space err... penetrator?

sackbut writes: "British engineers have told reporters that a test of their space penetrator has been conducted and all signs suggest it was a complete success. The space penetrator is a bullet shaped projectile with electronics inside. Its purpose is to hard-land on another planet or moon, penetrating the surface by up to ten feet, then radio back sensor information."

Read more at: http://phys.org/news/2013-07-british-successful-space-penetrator.html#jCp

Comment Jupiterfoundation - spinoff research (Score 4, Informative) 21

They also do some very interesting projects with the Waveriders and with cetacean (whale) research at the Jupiterfoundation.org. You can listen live to whale sounds coming from Hawaii http://www.jupiterfoundation.org/new_bw_liveaudio_hawaii.html. The Waveridrers were actually a spinoff from the original Jupiter Foundation.

Comment Re:Hope no one hacks our entire Air Force one day (Score 1) 622

The whole point of drones is that you're not putting your own soldiers at risk, so you don't care if it gets shot down. That only costs money, and the military has as much of that as it wants.

Your first sentence is somewhat valid, the second not as much. One could say it depends on the war. Most major conflicts are resolved through economic means especially being able to build things faster than the other nation-state is able to destroy them. So saying it 'only costs money' is not true. Money is the ability of the nation to build and supply itself or other nations with product or services. If the manufacturing of these drones becomes all consuming (literally for the economy) then this could result in the need to cease the conflict.

Comment Re:Disappointed...thought he meant a "space gun" (Score 1) 131

As in a "gun" (weapon) used in space, which is to me a MUCH more fascinating engineering and design problem. In space, inertia and recoil are a bitch.

Missles probably impractical because they rely on aerodynamic forces to steer (nozzle alone isnt enough to change course/ uses too much fuel), whch leaves us energy and projectile weapons. Turrets can't whip around. Anything kinetic needs to dissipate the recoil which will favor recoilless designs, but those have their own complexities (current designs still have -some- recoil, which while negligible on the surface would have a magnified effect in space). the classic problem of what to do with the heat buildup.

I honestly think space combat will favor a design that is the fusion of two "obsolete" technologies, that of battleship and bomber, though i'm thinking more medium/dive attac bomber. the battleship classic standard is that of dishing and taking damage; this translates to a large mass, and more mass has advantages for absorbing both recoil and heat. the bomber side from the concept of lobbing essentially dumb munitions (bombs or "depth" charges) on a calculated physics trajectory. Though the trouble there, is there no fluid medium to tranfer the energy, so the munition either absolutely must impact the target directly, or cast out a large amount of shrapnel (which would complicate the battlefield for the attacker too).

The list goes on. Fascinating.

I think this is what you want: http://www.foreignpolicy.com/articles/2012/09/28/aircraft_carriers_in_space

Comment Re:Getting worse and worse (Score 2) 104

Very true. I can read a lot faster than any video can present 'information'. I just skip any video like this one (thank you Adblock/NoScript). I wonder weather the proliferation of video is to keep eyeballs on the site for longer or due to the regurgitated pap that passes for video journalism. But likely due to the horrible reading comprehension and laziness of some people (read key demographic that sells advertising).

Comment Re:This this not evolution (Score 2, Insightful) 253

Well, that would not be necessary, Mr. President. It could easily be accomplished with a computer. And a computer could be set and programmed to accept factors from youth, health, sexual fertility, intelligence, and a cross-section of necessary skills. Of course, it would be absolutely vital that our top government and military men be included to foster and impart the required principles of leadership and tradition. Naturally, they would breed prodigiously, eh? There would be much time, and little to do. Ha, ha.

"Now, wouldn't that necessitate the abandonment of the so-called monogamous sexual relationship, I mean, as far as men were concerned? Regrettably, yes. But it is, you know, a sacrifice required for the future of the human race. I hasten to add that since each man will be required to do prodigious... service along these lines, the women will have to be selected for their sexual characteristics which will have to be of a highly stimulating nature."

Comment Re:Needs some background research (Score 1) 38

The 1994 Murray and Cox 'Apollo' is available as a Kindle version for those interested. Not Subtitled - if you try to find the subtitled version it is only in out of print paperback.

From TFA:

"In the movies, a spacecraft launch is often accompanied by bombastic music and the seat-juddering bass of rockets thundering, with shots of flight controllers frantically mashing buttons intercut with shaky-cam special effects of the launch vehicle clawing its way skyward. I asked Sy about what a person actually experienced while sitting at a console during launch, and it turns out that reality, again, is a very different place from fiction."

The author should learn what he's talking about - the room usually shown during launch (particularly during Apollo 13) is the LCC, not MOCR. The LCC is located adjacent to the VAB at Cape Kennedy and controls the testing, checkout, launch, and flight of the vehicle until it clears the tower, at which point the MOCR takes over.

He's also seems unaware that there's any media other than mini-series and fiction... If you're really interested in the MOCR, and wish for a less slack-jawed account, try and find a copy of Murray & Cox's Apollo (sometimes subtitled "Race to the Moon"). (Hard copies are expensive and collectible sadly.) In 1994 was Apollo along with Lovell's Apollo 13 that first actually discussed the MOCR in detail and kicked off the modern wave of more serious and less starry-eyed books about the Apollo Program.

iMac

Submission + - Steve Jobs hinted at Apple's abandonment of optical drives back in 2010 (networkworld.com)

An anonymous reader writes: Apple's newly released iMacs don't come with optical drives standard. Here's why you shouldn't be surprised. Back in 2010, Steve Jobs responded to a customer email regarding Blu-Ray drives and noted that it will be beaten by Internet downloads. "Free, instant gratification and convenience (likely in that order) is what made the downloadable formats take off. And the downloadable movie business is rapidly moving to free (Hulu) or rentals (iTunes) so storing purchased movies or TV shows is not an issue." That said, Apple's decision to forgo Blu-Ray drives and completely remove optical drives altogether has been in the cards for some time now.
The Military

Submission + - Targeting the President's DNA 2

Hugh Pickens writes writes: "The Atlantic reports that experts in genetics and microbiology are convinced we may be only a few years away from the development of advanced, genetic bio-weapons able to target a single human being based on their DNA. The authors paint a scenario of the development of a virus that causes only mild flu in the general population but when the virus crosses paths with cells containing a very specific DNA sequence, the sequence would act as a molecular key to unlock secondary functions that would trigger a fast-acting neuro-destructive disease that produces memory loss and, eventually, death. The requisite equipment including gene sequencers, micro-array scanners, and mass spectrometers now cost over $1 million but on eBay, it can be had for as little as $10,000. According to Ronald Kessler, the author of the 2009 book In the President’s Secret Service, Navy stewards gather bedsheets, drinking glasses, and other objects the president has touched—they are later sanitized or destroyed—in an effort to keep would-be malefactors from obtaining his genetic material. However no amount of Secret Service vigilance can ever fully secure the president’s DNA, because an entire genetic blueprint can now be produced from the information within just a single cell. How to protect the President? The authors propose open-sourcing the president’s genetic information to a select group of security-cleared researchers who could follow in the footsteps of the computer sciences, where “red-team exercises,” are extremely common practices so a similar testing environment could be developed for biological war games. "Advances in biotechnology are radically changing the scientific landscape. We are entering a world where imagination is the only brake on biology," write the authors. "In light of this coming synbio revolution, a wider-ranging relationship between scientists and security organizations—one defined by open exchange, continual collaboration, and crowd-sourced defenses—may prove the only way to protect the president.""

Submission + - Geek Remodel? 3

An anonymous reader writes: What would you do to 'go geek' if you had a major remodel on your hands? My wife and I are re-modeling my in-law's 3000 sq foot single-level house, and we're both very wired, tech-savvy individuals. We will both have offices, as well as TVs in the bedroom and dining room. My question to the community is: What would you do if you had 10-20,000 to spend for this kind of remodel project? What kind of hardware/firmware would you install? I'd love to have a digital 'command center' to run an LCD wall-calendar for the family, and be able to play my PS3 from anywhere in the house (ie, if everyone wants to watch Netflix while I'm in the middle of some Borderlands). What else have geeks done/planned to do? This is a test run for a much, much nicer house down the road, so don't be overly afraid of cost concerns for really great ideas. We will be taking most of the house down to studs, so don't factor demolition into costs. For culinary-minded geeks, I'd love any ideas you have to surprise my wife with cool kitchen gadgets or designs.

Slashdot Top Deals

Today is a good day for information-gathering. Read someone else's mail file.

Working...