The source-code ripoff is a ridiculous starting point. CP/M was largely written in PL/M, Intel's quasi high level PL/I-like language. QDOS was written in X86 assembly language. There is no possibel pathway between the two, unless you posit that Tim Patterson somehow got a hold of the PL/M source code, and played the role of a super-optimizing cross-compiler. Ridiculous.
Very variable in accuracy.
A few geek-related pages where I have intimate knowledge of the reality, quite often the Wikipedia page is way, way, way off.
And of course if you make an edit, saying "I WAS THERE, I SPENT 3 YEARS working with that thingy, I HAVE SIX OF THEM IN MY ATTIC", your edit gets removed within an hour, time and again.
Sigh.
Let's see:
Compared to being hit by sunlight:
param.
energy.
exposure.
photon energy . 6E-25 Joules.. 3E-19 Joules
Looks to me like that Sun is DANGEROUS, exposing you to about 3,000 times more energy per unit time, for about 110,000 times longer, and with individual photons 500,000 times more energetic.
The 900MHz radio wave photons are so weak they can't excite any atom to any higher energy level, or cause any kind of chemical change, not by a factor of 1000 or more.
Say what? ANY company "involved"?
I suspect to make nuclear weapons, you need, like, EVERYTHING. Bricks, mortar, screwdrivers, voltmeters, paper, pencils, pens, pipes (lots of pipes), cars, gasoline, welding rods, drill presses, lathes, etc, etc, etc, etc..............
I think you'd be blocking the buying of almost everything, except maybe nail salon services.
A ridiculouos idea, if you're an electrical engineer, for many reasons:
(1) The noise on the wire, for reasonable values of resistors and bandwidth, is down in the low microvolts. If the cable is unshielded, it's going to pick up several microvolts of radio signals per foot. Even if it's really well shielded, we're still talking microvolts per kilometer.
(2) Eve can put a probe signal on the wire, it just has to be random noise. Alice and Bob have no way of proving that a small spike of random noise, only half a standard deviation above the average, isn't perfectly fine Johnson noise coming from the other end. Eve knows the amplitude of the noise she is putting on the wire, so she can subtract that amount, and the difference reveals the values of the resistors.
(3) For any moderately long wire, in the kilometer range, there is a time delay, allowing Eve to inject short bursts of noise and get the resistor info from each end coming back, spread out in time.
(4) Bell Labs proposed this idea, the part about injecting noise inn from both ends, back around 1955.
My son suggested we name our wireless box "FEMA Death Camp #7327"
Ahem, what about the not so insignificant details such as transistor speed, performance, scalability, yield, and reliability?
To get transistors to the level they're at, they've had to be very carefully shrunk and the silicon carefully controlled for resistance and impurity level, something that these deposited semiconductors will be many, many orders of magnitude worse in each and every parameter.
There's not a whole lot of point making transistors that are 1,000 times larger, 1,000,000 more power-hungry, have 100,000 times lower yield, 10,000 times slower, and have 10,000 times shorter life, (as a rough estimate).
While these folks may have made something 100x faster than something else, it's still useless.
It's a phase-change -- that means HEAT, which means it takes time for the storage element to heat up, change phase, and then cool down. It's probably better than using punched cards, maybe even better than 1990 flash memory, but not a whole lot better.
Memory technology today has to work on the nanosecond level-- phase-change is not going to get anywhere near that ballpark.
You also need storage that can be read and written thousands of times without degradation-- phase-change is unlikely to ever get to that level.
"Flying" a "space plane" is a meaningless accomplishment, even if it happened.
It takes a spitload of details, gotten exactly right, to make a safe, practical, reliable aerospace gadget.
The history of development of every thing that zooms has been fraught with a long if not also steep learning curve.
It took many tries for the USA to get the X-15 working smoothly.
Look up how many years the C-5A, C141, B-58, Atlas, B-1, and Patriot were in "development". Count up how many of those had to go back to the factory after a year to get new wings.
Anybody can put some metal on a booster and call it a "space plane". That does not make it one.
This is unusable. On my iMac, Safari pegs out at 100% and the fans spool up to top speed. NFG.
Reedeeculous.
The real test of cold fusion would be detecting neutrons, LOTS of them if they were getting kilowatts of heat. I'm too lazy to calculate again how many neutrons, but it's certainly enough to fry everybody in that room.
You'd think after Pons and that Margarine guy made the same dumb mistake, not claiming scads of neutrons, these guys would patch up that hole.
Now let's not go overboard here. The basic laws of Physics indicate that any "solar powered plane" is going to be a very iffy thing. You can only get 150 watts per square meter of wing surface, that's when the sun is shining and at right angles to the sun. So you're talking about a very slow and very underpowered airplane, with like at best some pitiful and hazardous climb rate.
No way it could ever be certificated for carrying humans.
Rocket fuel was a big research area in the 1950's. Dozens of very good chemists spent a whole load (hundreds of millions of 1950-size dollars) trying to make better rocket fuels.
( One of them wrote a informative and funny book about that time and place ).
The short summary is: Yes, you can make higher oomph rocket fuels and oxidizers with more oxygen in them.
But a lot of the formulas are impractical as:
(0) They were already discovered years ago, and discarded, but chemists don't like to write up their failures, and researchers don't like to read old moldy research summaries anyway.
(1) They're waaay too expensive to make, even for military uses.
(2) They are highly toxic, even more toxic than the widely-used hydrazines, which can kill you in several interesting ways.
(3) They're so unstable, you have to keep them under impossible conditions, like no sound, no vibrations, no light, and under a part per million of crud in the perfectly-smooth and unscratched nickel-plated tanks.
(4) They can't be stored for more than a day or so before the fuel or oxidizer starts decomposing itself or the tank walls.
(5) Too many of the researchers were vaporized while handling the stuff. Literally. Truly. Completely. That tends to make it hard to find substitute researchers to continue working with the same stuff.
(6) For military applications, you need a fuel that can be handled by raw recruits, stored for many months, be pumped quickly into not always totally clean rocket tanks, kept in those loaded rockets for days to months, and tolerate wide temperature swings. These requirements alone disqualify a large percentage of really zippy fuels and oxidizers.
The odds are pretty high against this "new" compound being all that new, or it passing the basic requirements for fuel or oxidizer.
If you read TFA, it turns out what they have done so far is drill a tiny hole.
Everything else is still TBD. Things like:
(1) Figuring out how to get a thread of DNA to enter the hole.
(2) Figuring out how to push it through the hole.
(3) Figuring out how to read the bases, which are electrically equivalent and somewhat shielded by the phosphorous backbones..
(4) Figuring how to keep DNA and other crud from getting wedged in this nanometer-width hole.
Somehow I think they're doing this all backwards-- doing the trivial part first and announcing what at first glance appears to be total success.
>My bench top pancake style geiger counter detects alpha particles from 35S and beta particles from 32P just fine. I'm sure it would handle plutonium no problem.
Swell. But most folks are not going to lug a lab bench geiger counter on an international trip. Or a 9,000 mile extension cord. Or know how to interpret the readings. In addition the alpha particles from Plutonium have a mean free path in air of about 2 centimeters, so waving around a pancake style sensor tells you nothing.
>All it takes is one cosmic ray, or one decay from an atom of phosphorous in a banana, etc. etc. Risk is proportional to dose. It's managable.
You seem to be ignorant of the effects of Plutonium ingestion. One nanogram of it emits 3 x 10^5 alphas per second, for the length of your life. The Phosphorus in a banana is way spread out. Cosmic rays come at you in random paths. Big diff.
>If we can estimate the exposure, we can calculate exactly how many people we'd expect to get cancer from such an expedition. Again risk is proportional to dose.
You miss the point-- we can't get an exposure reading from a geiger counter. the AVERAGE rad level, as indicated by a geiger counter, is useless information. The counter is not going to register the Plutonium a;lphas, as they don't travel far in air. There are thousands of acres of dusty countryside there, with skazillions of particles of Plutonium. The dust blows around and gets on your skin and into your lungs. There they become point sources of radiation. The namby-pamby average reading of a Geiger counter does not reflect this.
Eureka! -- Archimedes
