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

 



Forgot your password?
typodupeerror
×

Comment Re:All glass is liquid (Score 1) 293

I suspect that the liquid is not actually silicon dioxide, but is a silicone that cures to silicon dioxide. Such flowable oxides (such as hydrogen silsesquioxane or HSQ) are often used in the semiconductor industry for a convienent planarizing layer.

Comment More info (Score 2, Insightful) 63

This is the same basic result as a previous article:

http://tech.slashdot.org/story/09/10/26/1856230/New-Optomechanical-Crystal-Allows-Confinement-of-Light-and-Sound

The structure in the current article is a ring resonator in this article. In the previous article the structure was a grating based resonator.

I found an article with better information:

http://www.scientificamerican.com/article.cfm?id=optical-force-gradient

Comment Re:Not a fundamentally new idea (Score 2, Interesting) 91

This is different than acousto-optics. There is no outside force here; all the movement is generated by the light itself. The miniscule amount of force from the light is enough to excite a resonance in the mechanical structure. The structure is both resonant to light and to acoustics. The two resonances are coupled because as the structure moves, the optical resonance shifts a little bit.

It is really cool work, but I haven't figured out what it'll be useful for.

Comment Re:But still... (Score 1) 710

I've had the whole house on CFLs for years now and they light *instantly*.

The standard fixture CFL's (A19 replacements) I've bought have all been pretty good. They start up fast (except in cold weather) with enough light output that I don't mind that it's not 100%. However, I've tried flood light replacements, and they all stink. I might as well light a candle for all the light they output when I turn them on. It takes a good couple minutes before they reach a reasonable light level, and another few minutes before they reach close to the advertised amount of light.

Comment Re:sigh (Score 2, Interesting) 251

Use the right tool for the job.

I agree -
2-D Platformers and most classic games -> d-pad, joystick, or keyboard (my preference is joystick, but I'm an old-timer)
3-D Platformers -> modern console (except Wii)
First person shooter -> mouse and keyboard
Real time strategy -> mouse and keyboard
Flight simulator -> joystick and keyboard (unless you spring for a more involved setup)
Driving -> steering wheel and pedals.
Rhythm -> unique controllers - here the controller basically is the game, and the games are differentiated primarily by the controller.
Wii -> Motion controllers like these are still in their infancy. Wii Sports, etc., hints at what's to come.

I second another post that comments that modern console controllers (Wii, not withstanding) are jacks of all trades, masters of none. They work reasonable well for a huge gamete of game types, but I think 3-D platformer is the only game type that I think they are the best choice for.

I also think that for most games, simpler controls are better. Fewer buttons, less complicated maneuvers all allow the game to picked up quickly by a large number of people. Some people really enjoy mastering complicated controls, and that's fine. I just don't think that complicated controls make games fun for the majority of people.

Comment Re:Poor perspective. (Score 2, Insightful) 383

"They" say being slightly overweight leads to a longer life than "normal" weight. Perhaps the reality is "they've" defined normal a little too low.

There's definitely some truth to that statement. In addition, there's a natural tendency for people to gain weight as they get older. In our youth obsessed culture thin=young=good, which may not actually be true.

I think the real reason having a little extra weight is beneficial is that it helps if you get seriously ill. If you are very sick, you might not be able to eat for weeks. Having that extra storage of energy is essential to fight off the illness and get better.

If you are seriously overweight, the added complications of carrying that weight outweigh (no pun intended) any benefit.

Comment Re:It's the carriers, not the technology (Score 1) 113

If you've got the kind of issues described in the article summary, your carriers stink.

Yes, they do. Why do the carriers in .au not stink - is there legislation that stops them getting up to the same kind of crap that the UK ones do? Or is there more room on their backbone networks? Or are they just nicer? :)

The UK has always had ridiculously high bandwidth prices and ridiculously low traffic caps, on all Internet services - I've hosted numerous UK-specific websites on US servers over the last ten years, purely for cost reasons.

Comment Traffic caps are a problem... (Score 1) 113

My girlfriend has mobile broadband through Vodafone because BT couldn't figure out how to install a line in her property (which didn't stop an engineer claiming he'd done it, and them billing her for most of a year before it all got sorted out - but I digress).

I've been surprised at how good the speed and stability of her connection is, but the traffic cap is crippling. She's a fairly heavy 'net user (she's a freelance web designer, so has to upload new sites and drafts for her clients to see), but she's not a filesharer, and she runs up against her 5GB cap most months. Going over it gets very expensive very quickly.

The worst thing about the cap is that it discourages her from downloading updates for her OS and software... meaning that she's probably more open to virus/worm infections.

Programming

Submission + - Ecommerce with Catalyst - a post-project analysis

Denny writes: "Perl is Alive has published a 'six months later' analysis of a Perl ecommerce project which used the popular Catalyst framework at its core. It's a well-written look at how, by choosing various components from CPAN, you can build up a complex custom-tailored system without having to write everything end-to-end yourself. The author concludes that they would "undoubtedly" make the same technology decisions again, given the success of this project, and the quality of 'modern' Perl libraries and frameworks which are now available from CPAN."
Sci-Fi

Submission + - The tech of Star Trek: here today, or on its way (technologizer.com)

Harry writes: "J.J. Abrams' Star Trek movie is only a month away, and while it may be a promising reimagining of the the Trek universe, there are plenty of ways in which the old Trek universe is reminiscent of our own 21st century. Abrams' film is the eleventh Star Trek movie, so we've compiled a look at eleven technologies from Star Trek that foreshadowed stuff that's actually happening today."
The Internet

Submission + - Worst privacy invasion in the world, by the UK (telegraph.co.uk) 1

Anonymous Coward writes: "A European Union directive, which Britain was instrumental in devising, comes into force which will require all internet service providers to retain information on email traffic, visits to web sites and telephone calls made over the internet, for 12 months.

Police and the security services will be able to access the information to combat crime and terrorism.

Hundreds of public bodies and quangos, including local councils, will also be able to access the data to investigate flytipping and other less serious crimes.

It was previously thought that only the large companies would be required to take part, covering 95 per cent of Britain's internet usage, but a Home Office spokesman has confirmed it will be applied "across the board" to even the smallest company."

Comment Re:I choose... (Score 2, Insightful) 610

Show some evidence even for an effect in the brain which can't possibly be accounted for by everything we currently understand about it, and people might be more willing to believe your ludicrous claims.

Simple. The fact that I (and you, too) am aware of our existence. We can argue about free will, but perhaps more important is the perception of free will, or indeed any will at all.

(Not that I necessarily agree with the grandparent's ludicrous claims, either).

Slashdot Top Deals

Understanding is always the understanding of a smaller problem in relation to a bigger problem. -- P.D. Ouspensky

Working...