John Titor made numerous predictions, some vague and some specific, regarding calamitous events in Early one morning, a man who identified himself as John Titor posted a message on the forums of the Time Travel Institute, a website "dedicated to research and exploration of the temporal sciences." Titor said he had returned from the year 2036, and that he was a survivor of a civil war and nuclear attack. The author of these posts claimed to be an American military time traveler from 2036. Posting under the handle TimeTravel0 , Titor made his first post on November 1, 2000. John Titor is a name used here on Time Travel Institute and other bulletin boards during 20.
The followers online couldn't let Titor go. But then something even weirder happened. Titor’s messages from continued for a few months, then he claimed he had to return to 2036 for good. Titor methodically listed the parts required for what he called "gravity distortion system." His grandfather, he claimed, had worked on such a machine, and he was on his way back to 1975 to find him. That computer, a primordial desktop PC released in 1975, supposedly had some key to solving a future crisis.
Obsessives launched Titor sites, stitching together his postings. Geeks began unearthing strange facts about the IBM 5100s. It's a real-life version of a new kind of game - the alternate reality game, which sends surfers down reality-blurring rabbit holes.
The lawyer claims to be merely "representing" Titor, but some online think that he or his teenage hacker son made up the whole thing. The gumshoe ended up at the doorstep of a flashy entertainment lawyer living in the Disney utopia of Celebration, Florida. Ultimately, an Italian TV show hired a private eye to go on Titor's trail. It was cited many times by Art Bell, the host of the paranormal radio show Coast to Coast.
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It's an all-too-common ploy, and legitimate manufacturing companies and distributors suffer mightily as a result of it. He warned that his future was also our future, suggesting we. He said his name was John Titor, and he wrote about the dystopian future from which he came a time of war, famine, and destruction. It's why a story so ludicrous would seize the imaginations of so many people online.the time i came back iranian movie The fan asks: Banner said that when you go back in time you make a separate time line, so it doesnt effect the past.On November 2, 2000, a man using the handle TimeTravel0 posted on an internet message board claiming to be a time traveler from the year 2036. The most compelling question of all isn't whether Titor exists.
Being less than 1 micrometer across and transparent, these tags are essentially invisible. Even people in developed nations are susceptible to being treated with fake or substandard medicines.Tiny mechanical resonators produced the same way microchips are made (bottom) can serve to authenticate various goods. In that year, I was given the.Getting duped in this way when purchasing medicine is sadly the norm. 1st edition of A Time Travelers Tale 2001 This is an original publication from 2001. Yet for much of the world,A TIME TRAVELERS TALE by John Titor. When purchasing pharmaceuticals, for example, you'd be putting your health in jeopardy if you didn't receive the bona fide medicine that was prescribed.
But UPC and QR codes must be apparent so that they are accessible for optical scanning. These efforts include the display of Universal Product Codes (UPC) and Quick Response (QR) patterns, and sometimes the inclusion of radio-frequency identification (RFID) tags. So it's no wonder that many people in industry have long been working on ways to battle this scourge.The traditional strategy to thwart counterfeiters is to apply some sort of authentication marker to the genuine article.
Intrigued? Here's a description of the physical principles on which these devices are based and a brief overview of what would be involved in their production and operation.You can think of an RF NEMS tag as a tiny sandwich. And they cost just a few pennies each at most.Unseen NEMS tags could become a powerful weapon in the global battle against counterfeit products, even counterfeit bills. That, their tiny size, and the nature of their constituents, make these tags largely immune to physical tampering or cloning. Like RFID tags, our RF NEMS devices don't have to be visible to be scanned. And depending on what they are used for, they can be too costly.We've come up with a different solution, one based on radio-frequency (RF) nanoelectromechanical systems (NEMS). RFID tags aren't as easy to clone, but they typically require relatively large antennas, which makes it hard to label an item imperceptibly with them.
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This coil is connected at one end to the top conductive layer and on the other end to the bottom conductive layer. We take advantage of that phenomenon to induce oscillations in the flexible part of the tag.To accomplish this, we use lithography to fabricate a coil on the perimeter of the tag. More important here is that such materials also experience what is known as the converse piezoelectric effect—an applied voltage induces mechanical deformation. That design leaves the circular surface free to vibrate.The material making up the piezoelectric film is, of course, subject to thePiezoelectric effect: When mechanically deformed, the material generates an electric voltage across it. With lithographic techniques similar to those used to fabricate integrated circuits, we etch a pattern in the sandwich that includes a ring in the middle suspended by four slender arms. The filling is a 100-nm-thick piezoelectric film composed of a scandium-doped aluminum nitride, which is similarly transparent.
The flexible portion of the tag doesn't have just one resonant frequency—it has many. University of FloridaIn truth, the situation is more complicated than this. Voltages induced in this coil by an external scanner set up mechanical oscillations in the ring. It includes a coil (lighter shade), which connects with electrode layers on the top and bottom of the ring. The preferred geometry (top) is a circular tag containing a piezoelectric ring suspended by four beams. The resulting mechanical deformation of the piezo film in turn causes the flexible parts of the tag to vibrate.These electron micrographs show some of the tags the authors have fabricated, which can take various forms.
That is, while the resonances exhibited by a tag are controlled in a general way by its geometry, the exact frequencies, amplitudes, and sharpness of each of its resonances are the result of random variations. Here, though, random variation is not a bug—it's a feature! It allows each tag that is fabricated to serve as a unique marker. The random positioning of those tiny cones creates significant differences in the resonances that arise in seemingly identical tags.Random variations like these can give rise to troublesome defects in the manufacture of some microelectronic devices. Because of the ample amount of scandium doping, conical clusters of cubic crystals form randomly within the matrix of hexagonal crystals that make up the aluminum nitride grains. In particular, in the piezoelectric layer there are intrinsic variations in the crystal structure. These subtle manufacturing variations will affect the mechanical properties of the device, including its resonant frequencies.In addition, at this scale the materials used to make the device are not perfectly homogeneous.
While that's possible—and we've done it in the course of our laboratory studies—this strategy wouldn't be practical or effective in commercial applications.But it turns out that measuring the resonances of these tags isn't at all difficult. One way, in principle, would be to put the device under a vibrometer microscope and look at it move. For discretely labeling something like a batch of medicine to document its provenance and prove its authenticity, it's just what the doctor ordered.You might be wondering at this point how we can detect and characterize the unique characteristics of the oscillations taking place within these tiny tags.
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