Invention: Plasma-powered flying saucer

May 8, 2008

Invention: Plasma-powered flying saucer
13:10 06 May 2008, NewScientist.com news service, Justin Mullins

Pass a current or magnetic field through a conducting fluid and it will generate a force. Numerous aerospace engineers have tried and failed to exploit this phenomenon, known as magnetohydrodynamics, as an exotic form of propulsion for aircraft. But perhaps attempts so far have all been too big.

A very small design could have a better chance of taking off, says Subrata Roy, an aerospace engineer at University of Florida, Gainesville, US.
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How could I pass this one up? Roy has a patent for a “WINGLESS HOVERING OF MICRO AIR VEHICLE.” The design is a saucer with electrodes all along the bottom. They would ionize the air below the saucer and thus make a plasma that could be used to generate lift. The same (or different?) electrodes would create electric fields that would interact with the plasma to create a force. By cleverly arranging the electrodes on the surface of the saucer, there would be a net upwards force on the saucer, causing it to hover. Presumably you could tweak the electric fields and/or plasmas to steer the craft without having any moving parts. He proposes filling the saucer with helium to decrease the amount of force needed to get it off the ground.

I’m going to let you come up with all sorts of uses for such a device (war drones, autonomous cameras, automatic dog walkers, etc.) and I’m going to recall a previous story where scientists proposed using a plasma bubble to protect astronauts from radiation during a trip to Mars. They could pool these idea and use the plasma shields for propulsion as well. In space, you don’t have to overcome gravity, so the plasma-powered flying saucer could be big enough to carry people (or robots or a fleet of micro-sized saucers). Of course there would be no air to ionize to create the plasma, but in the old post, they came up with a way to keep a plasma around the ship. That means that propulsion would be achieved with electricity as the only fuel source.

And that’s where the solar sails and micro sterling engines come in.

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May 2008 Newsletter

May 7, 2008

I have my May newsletter up on my site now:
http://toddcedwards.com

The big news is that I sold a short story to a horror anthology! My first sale! See the newsletter (which is on the main page) for details.

Electronic ‘pet’ could replace passwords and PINS

May 2, 2008

10:12 02 May 2008, NewScientist.com news service, Colin Barras

Portable electronic pets able to recognise their owner’s voice and walking style could replace passwords and PINs as a way to keep personal details and accounts secure, say UK researchers.

Other experts, though, say the advanced Tamagotchi plan still needs some work.

Called “biometric daemons”, they borrow a concept from Philip Pullman’s His Dark Materials books, in which people are accompanied by an animal daemon that is a physical representation of their soul.
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Do you write about witches in the modern world? Do want an excuse to have a talking cat? Or do you just think that familiars/robot sidekicks are the bee’s knees? Well now you can put them in your story without them being the same boring old thing. Now your characters can have biometric daemons that imprint on the character and store all the character’s personal info.

Everyone has different habits, walking styles, voices, etc. Easy to mimic one or two things about a person, but hard to mimic them all. So if you have a pet that learns your style, they will know if they are with you or not. If they are with you, they will give up the info they are storing. If not, they will die. Kinda harsh, and of course it will mean that you have to carry them around with you always and forever. And if you get them when you are young, you might be stuck with something that seemed cool at the time but later just seems lame.

Not unlike many tattoos.

But I digress.

Think of the merchandising possibilities. If your books become wildly popular, you could sell biometric daemons that match the ones used by characters in your stories. Chaching! Personally, I’m going to hold out for a R2-D2 that can also act as a PDA and cell phone. In the mean time, I’ll have to settle for this item which will make my life complete.

For more info, check out this paper on the subject.

Engineers find ‘missing link’ of electronics

May 1, 2008

Paul Marks, NewScientist.com news service, 18:00 30 April 2008

Nanoscale circuits based on molecules used in sunscreen lotion have led to the discovery of the “missing link” of electronics engineering – a previously mythical device known as a “memristor”.

First predicted in 1971, the memristor could help develop denser memory chips or even electronic circuits that mimic the synapses of the human brain, says Stan Williams who made the discovery with colleagues at Hewlett-Packard’s lab in Palo Alto, California.
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Some cool stuff here. Basically all electronics boil down to resistors (current flows through and some energy is given off as heat), capacitors (charge is temporarily stored), and inductors (current flows through and some energy is stored in a magnetic field). In 1971, Leon Chua at UC Berkeley predicted that there should be a 4th hardware device that remembers the last voltage applied to it and how long it was applied. Now someone has made such a device.

Memristors are cool because they mimic properties of neurons. In neural networks of cells or in computer simulations, each neuron has multiple inputs but only one output. So there are lots of On and Off signals coming in (chemical and/or electrical signals in cells), but the neuron has to take all that info and the either fire or not. Basically, it has to reach a voltage threshold before it will fire. Memristors work the same way. The consequences are that you can store information in the resistance of the device, and you can have passive computer memory (no power needed to maintain it).

Even cooler, you can envision a solid state brain. To model neurons now, we have to program them into computers, thus slowing the process down. Making the model out of solid state parts means that it could work much faster. From a plot standpoint, that means AI without having to have massive supercomputers. And of course that leads to the Singularity, which is overdone.

How about making solid state brain “blanks”. Then we can download our mind into the blank when we die (or before) and live on as cyborgs. For inspiration, see Robocop or read David Brin’s Kiln People.

Drinking dulls the brain’s response to threats

April 30, 2008

By Julie Steenhuysen
Tue Apr 29, 6:05 PM ET

CHICAGO (Reuters) –
Drinking alcohol dulls the brain’s
ability to detect threats, U.S. researchers said on Tuesday in
a study that helps explain why people who are drunk cannot tell
when the guy at the end of the bar is angling for a fight.

They said the study is the first to show how alcohol
affects the human brain as it responds to threats.

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No duh. We’ve know that for a long time. We call it “beer goggles”. They only studied 12 people, and the method seemed a little iffy (brain MRI scans while showing people pictures, and while giving some intravenous alcohol and others intravenous salt water). Normally you’d want a lot more test subjects if you want to see a significant difference. And by significant, I mean true difference above the random noise.

But shaky methods aside, we can use the idea of a chemical that specifically targets the brain in such a way as to decrease the ability to perceive threats. How, you ask? Well, we could make a Daredevil-like superhero (the man who knows no fear). The protag hops himself up on the drug in order to go out and fight crime. His Achilles’ heel? Running out of the drug and then being afraid.

Or have a ninja/commando-type character who uses the drug to dose the enemy guards/guard dogs in order to have a technological version of a Jedi Mind Trick.

I guess the idea is less a plot and more a Cheap Plot Device (CPD). Oh well, they can’t all be winners.

Bug Has Sex with Orchids

April 29, 2008

Charles Q. Choi

Special to LiveScience
LiveScience.com

Mon Apr 28, 2:45 PM ET

Orchids may be enthralling to humans, but our love of these flowers only goes so far.

Some wasps, on the other hand, find orchids so enchanting that they sexually climax while visiting them.

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That first statement might not quite fit Georgia O’keeffe and some of her “flower” paintings, but wow, that is some weird research. Basically, the orchid mimics a female wasp. The male wasp has been out hunting all day and is on his way back to the nest when “Hello? What do we have here?” He takes care of business and goes on about his way without so much as leaving his cell phone number. The orchid doesn’t care, because she was just using the wasp. While he was distracted, she dusted him with pollen, which he will do doubt spread to the next “innocent” orchid he comes across. You see, this stuff writes itself. Apparently the deed includes a happy ending, but I don’t want to know who came up with the idea to find that out.

Now on to the real story. Clearly there will have to be a STD involved, or maybe a parasitic alien species that mimics humans in order to copulate. They can’t impregnate each other, but instead have to use an intermediary (us). To make it horror, have the eggs spawn inside the human host. To make it comedy, well, I’m sure you can come up with any number of ideas. The movie version will star Patrick Dempsey as the unsuspecting horny human.

Time delay posting

April 28, 2008

Live Writer looks like it might let me create a post now and automatically have it show up later (e.g. if I go on vacation).

Time delay posting with ScribeFire

April 28, 2008

Will it work?

Windows Live Writer

April 28, 2008

I’m now trying the standalone app Windows Live Writer:

http://get.live.com/writer/overview

This app runs outside of Firefox, but otherwise it looks similar to the Plugin I tried earlier. Let’s see how it performs…

The results

April 28, 2008

Well, it worked. But with trouble. LJ auto-converted the url’s to links, but WP did not. Boo WP!

Also I didn’t see any place to add tags. I found one option, so let’s see how it works out…

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