Wireless technology: It is already possible to send electricity without wires. Can devices be powered using ambient radiation from existing broadcasts?

Jun 10th 2010

ANYONE whose mobile phone has ever run out of juice—which means, these days, more than half the world’s population—will like the idea of getting electrical power out of the air. The notion is far from new. A little over a century ago, the inventor Nikola Tesla drew up ambitious plans to transmit electrical power without wires. He carried out a series of experiments in which electric lights were illuminated via electrostatic induction, by connecting them to metal sheets suspended in a strong electric field produced by a distant transmitter. In 1898 he proposed a “world system” of giant towers that would form both a global wireless communications network and a means of delivering electricity over large areas without wires.

Pretty awesome if it can be made to work on a large scale, especially since solar power cells are still very inefficient, and there would be many applications for this sort of technology where radio waves penetrate, but light doesn't (I'm thinking indoors, mainly).

Reminds me of a good book I read on the whole world of energy production and delivery: The Scientist, the Madman, the Thief and their Lightbulb.

Good news about the middle-age brain

Posted Jun 7th, 2010 at 11:15 AM and seen 5296 times

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Forget version 4 of the iPhone as today’s big news. This is really important. Barbara Strauch, former deputy science editor of The New York Times published a book called The Secret Life of the Grown-up Brain: The Surprising Talents of the Middle-Aged Mind. Here’s the paragraph that made my day:

“If you have to learn new information — a new computer system at work — brand new information can take a little longer on average as our brains age. [But] our brains in modern middle age have enormous capacity and are formidable in their powers to get the gist of an argument, to see the big picture. Someone I know who teaches at Columbia says the kids are smart, but they don’t seem to connect the dots. What we have in the middle-age brain is that ability to connect the dots. I’ve had many people tell me, ‘I can’t remember what I had for breakfast, but solutions pop into my head.’”

Now where did I put my iPhone?

Full interview at Boston.com.

I've had that very same feeling for quite a while now, this inability to remember trivial things like what I ate yesterday, while getting better at the "big picture" things (something I've always been quite good at). So I guess my abilities as Software Architect aren't due to wane just yet... Hooray!

56K Modem Emulator

(A.K.A. Sounds Broadband Users Never Hear)

 connect 

[home|huh?]

Now here's a sound I haven't heard in a long time... Good times, good memories. :)

A thick haze of organic material let the early Earth soak up the sun’s warmth without absorbing harmful ultraviolet rays, according to a new study.

The model offers a new twist on an old puzzle: Although the sun was so dim billions of years ago that the Earth should have been a ball of ice, the young planet had liquid oceans capable of supporting life.

“Given these recent papers, we can probably say the early faint sun problem is not one of the problems anymore in solving the origin of life,” said astrophysicist Christopher Chyba of Princeton University, who was not involved in the new work.

The sun should have been up to 30 percent less bright 3.8 billion to 2.5 billion years ago, according to studies of the lifecycles of sun-like stars. If the Earth’s atmosphere had the same composition then as it does now, it would have frozen over completely, like Jupiter’s moon Europa. But geological records show the Earth was at least as warm and wet then as it is today.

Scientists have struggled with this “faint young sun paradox” since 1972, when astronomers Carl Sagan and George Mullen suggested that an atmosphere containing a small amount of ammonia, a powerful greenhouse gas, could have warmed the Earth enough to keep the oceans liquid. But a later study showed that ultraviolet radiation from the sun would destroy the ammonia in the atmosphere and cancel out its warming effects.

Sagan countered in 1996 that the early atmosphere would have produced a thick cloud of organic haze, much like the orange cloud that enshrouds Saturn’s moon Titan. This haze would have blocked ultraviolet light but let in visible light, letting the Earth tan without getting burnt.

But early models assumed the haze particles were spheres, and that when individual particles collided, they globbed together to make bigger spheres. These spheres blocked visible light as well as ultraviolet light, and left the Earth’s surface even colder.

“It basically led us to a dead end where we couldn’t have a warm early Earth,” said Eric Wolf, a graduate student in atmospheric sciences at the University of Colorado at Boulder and the first author of the new study in Science June 4.

Wolf and coauthor Brian Toon realized that assuming the haze particles were spherical was too simple. Instead of combining to make bigger spheres, tiny haze particles no more than 100 nanometers across could form long chains, like strings of pearls. These chains would link up and branch off each other in a complicated fractal geometry, similar to the structure of clouds.

These strands of haze would form fluffy, airy structures that would let in visible light while blocking ultraviolet light, Wolf said.

“If you take into account the shape factor,” he said, “it turns out that the haze would be quite a strong ultraviolet shield while being relatively transparent in the visible. Visible light can reach through the haze and reach the surface.”

Without the destructive ultraviolet light, ammonia could build up under the haze and warm the Earth efficiently, Wolf said. Only a few parts per million of ammonia would be enough to offset the faint young sun.

But if early organisms could have looked up, they wouldn’t have seen a clear blue sky. The sky would be dim and rust-colored, like Titan’s.

“We’re really dealing with this completely alien world on the early Earth,” Wolf said.

Wolf’s study comes shortly after an April 1 paper in Nature that proposed another solution to the faint young sun paradox: The early Earth was darker, and therefore absorbed more heat. Both explanations could be right, Chyba said.

“It seems likely that the answer is going to be a composite explanation,” he said. “You cobble together a number of factors and you solve the paradox that way.”

The next step should be looking at ancient rocks to determine what the early Earth’s atmosphere was really made of, Chyba added. “That’s going to be really hard, because those rocks are really worked over. But that’s probably where the field is heading now.”

Image: Haze on Titan./NASA/Cassini

See Also:

• Earth’s Magnetic Field Is 3.5 Billion Years Old
• Life’s First Spark Re-Created in the Laboratory
• Primordial Mars Resembled Primordial Earth
• Primordial Earth Echoed in Arsenic-Eating Bacteria
• Origin of Life Chicken-and-Egg Problem Solved

Science. It just works.

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Laptop Steering Wheel Desk

As if the subhumans that text while driving weren't bad enough, here's a gizmo to hold a full laptop in front of them while they drive!

Oh and if they're a trendy subhuman and don't want to use a laptop or a phone to endanger other people's lives while you type away at their trivial bullshit, there's always the iPad Steering Wheel Mount: http://www.steering-wheel-ipad.com/index.html

Unbelievable.

Delaying clamping the umbilical cord at birth may have far reaching benefits for your baby according to researchers at the University of South Florida’s Center of Excellence for Aging and Brain Repair — and should be delayed for at least a few minutes longer after birth. This new recommendation published in the most recent Journal of Cellular and Molecular Medicine (14:3) notes that delaying clamping the umbilical cord allows more umbilical cord blood and crucial stem cells to transfer from mama to baby.

Games: Video Gamers Have Power Over Their Dreams on Wednesday May 26, @05:50PM

Posted by timothy on Wednesday May 26, @05:50PM
from the nocturnal-excursions dept.

canada

games

Ponca City, We love you writes "Live Science reports that researchers say playing video games before bedtime may give gamers an unusual level of awareness and control in their dreams which could provide an edge when fighting nightmares or even mental trauma. 'If you're spending hours a day in a virtual reality, if nothing else it's practice,' says Jayne Gackenbach, a psychologist at Grant MacEwan University in Canada who says that hard core gamers represent the leading edge of immersion in virtual worlds that increasingly has come to define a large part of contemporary entertainment and communication. 'Gamers are used to controlling their game environments, so that can translate into dreams.' One intriguing theory holds that dreams are a sort of threat simulation where nightmares help organisms hone their skills in a protective environment, and ideally prepare organisms for a real-life situation. To test that theory, Gackenbach conducted a study using independent assessments that coded threat levels in after-dream reports and found that gamers experienced less or even reversed threat simulation (in which the dreamer became the threatening presence), with fewer aggression dreams overall. In other words, a scary nightmare scenario turned into something 'fun' for a gamer."

I've definitely felt that my dreams were more "active" when I went to bed straight after a gaming session. On the other hand, having a completely interactive dream has prevented me from actually falling asleep.

Have any of you experienced similar? What was it like?

Who Can Do Something About Those Blue Boxes?

Saturday, 30 January 2010

Robert Scoble has a good analogy:

Let’s go back a few years to when Firefox was just coming on the scene. Remember that? I remember that it didn’t work with a ton of websites. Things like banks, e-commerce sites, and others. Why not? Because those sites were coded specifically for the dominant Internet Explorer back then.

Some people thought Firefox was going to fail because of these broken links. Just like Adobe is trying to say that Apple’s iPad is going to fail because of its own set of broken links.

But just a few years later and have you seen a site that doesn’t work on Firefox? I haven’t.

What happened? Firefox FORCED developers to get on board with the standards-based web.

The same thing is happening now, based on my talks with developers: they are not including Flash in their future web plans any longer.

Regarding those blue boxes that indicate embedded Flash content in MobileSafari, think of it this way: Who can make them go away?

1. Adobe can’t. They can’t put Flash Player on iPhone OS on their own.

2. Apple could, but they won’t.

3. Users could make Apple change its mind by refusing to buy iPhones, iPod Touches, and iPads because they don’t support Flash. That does not seem to be happening. In fact, iPhone sales are accelerating.

4. Web site producers could do it, by replacing or providing an alternative to the Flash content on their sites.

Adobe’s initial reaction to the iPad seems to be geared toward #3 — emphasizing publicly that iPhone OS devices are not capable of rendering the (admittedly, substantial amounts of) Flash content on the web today. Good luck with that.

Adobe’s fear, of course, is that #4 is what will happen. And with good reason, since I think it’s fair to say that we’re seeing this happen already. Flash evangelist Lee Brimelow made his little poster showing what a bunch of Flash-using web sites look like without Flash without actually looking to see how they render on MobileSafari. Ends up a bunch of them, including the porno site, already have iPhone-optimized versions with no blue boxes, and video that plays just fine as straight-up H.264. iPhone visitors to these sites have no idea they’re missing anything because, well, they’re not missing anything. For a few other of the sites Brimelow cited, like Disney and Spongebob Squarepants, there are dedicated native iPhone apps.

Kendall Helmstetter Gelner put together this version of Brimelow’s chart using actual screenshots from MobileSafari, the App Store, and native iPhone apps. The only two blue boxes left: FarmVille and Hulu.

The explanation is simple. Web site producers tend to be practical. Those that use Flash do so not because they’re Flash proponents, but because Flash is easy and ubiquitous. Few technologies get to 100 percent market penetration; Flash came remarkably close. A few years ago you could say that, effectively, Flash was everywhere. It made total sense for sites like YouTube and Hulu to go with Flash.

Flash is no longer ubiquitous. There’s a big difference between “everywhere” and “almost everywhere”. Adobe’s own statistics on Flash’s market penetration claim 99 percent penetration as of last month. That’s because, according to their survey methodology, they’re only counting “PCs” — which ignores the entire sort of devices which have brought about this debate. Adobe is arguing that Flash is installed on 99 percent of all web browsers that support Flash, not 99 percent of all web browsers.

Used to be you could argue that Flash, whatever its merits, delivered content to the entire audience you cared about. That’s no longer true, and Adobe’s Flash penetration is shrinking with each iPhone OS device Apple sells.

What’s Hulu going to do? Sit there and wait? Whine about the blue boxes? Or do the practical thing and write software that delivers video to iPhone OS? The answer is obvious. Hulu doesn’t care about what’s good for Adobe. They care about what’s good for Hulu. Hulu isn’t a Flash site, it’s a video site. Developers go where the users are.

Previous:	Various and Assorted Thoughts and Observations Regarding the Just-Announced iPad
Next:	What if Flash Were an Open Standard?

All I can say is, "Slam, dunk."

I've been using ClickToFlash on Safari ever since I first heard of it, and I just love not having all those intrusive, annoying ads. As for video, I mostly watch things on YouTube, which has a dedicated app both on the iPhone and the iPad.

Will I miss Flash? Nope.