Author Topic: Cell radiation eugenics too slow, NWO mandates Terahertz DNA-busting genocide  (Read 16311 times)

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Offline Optimus

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New Research Could Mean Cellphones That Can See Through Walls

Team Finds New Possibilities in Untapped Terahertz Range With Implications For a Host of Devices

Apr. 18, 2012

Comic book hero superpowers may be one step closer to reality after the latest technological feats made by researchers at UT Dallas. They have designed an imager chip that could turn mobile phones into devices that can see through walls, wood, plastics, paper and other objects.

The team’s research linked two scientific advances. One involves tapping into an unused range in the electromagnetic spectrum. The other is a new microchip technology.

The electromagnetic spectrum characterizes wavelengths of energy. For example, radio waves for AM and FM signals, or microwaves used for cell phones or the infrared wavelength that makes night vision devices possible.

But the terahertz band of the electromagnetic spectrum, one of the wavelength ranges that falls between microwave and infrared, has not been accessible for most consumer devices.

More: http://www.utdallas.edu/news/2012/4/18-17231_New-Research-Could-Mean-Cellphones-That-Can-See-Th_article-wide.html
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Offline Optimus

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How Would You Like X-Ray Vision In Your Phone?
http://www.gizmodo.co.uk/2012/04/how-would-you-like-x-ray-vision-in-your-phone/

Sam Gibbs -

If you can’t have X-ray specs, then a phone that can see through walls might just be the next best thing. Thanks to some researchers out of the University of Texas it’s now totally possible. They’ve taken the tech that powers the privacy-invading airport security terahertz wave scanners and made it tiny to create a phone-sized chip that’ll give your next smartphone the ability to see through walls.

The chip shrinks down the power requirements too, although you can bet your first born-child that this thing will still suck down juice like nobody’s business. They’ve built it using CMOS chips too, which camera aficionados should already be well acquainted with.

Right now the terahertz camera chip is designed to work within 4-inches due to “privacy concerns” – the Texas researchers no all too well that the first thing you’d do if you got your mitts on this thing would be to point it at the first pretty girl who walked past. Still, there are a plethora of possible applications for this kind of thing, no less so in medicine. You could use a portable terahertz scanner to peer inside your body to look for cancer for instance. (Optimus: Look for cancer inside your own body? I think they meant to say 'give yourself cancer')

Some how I doubt we’ll see this kind of thing in the iPhone 6 let alone the iPhone 5, but we might see it by the time the Galaxy S VI rolls around. How about bolting this thing into some Google Goggles – then we really would get some awesome X-ray specs from the future with augmented reality over the top for good measure too. [University of Texas via Science Daily]
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Offline Dig

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How Terahertz Waves Tear Apart DNA
A new model of the way the THz waves interact with DNA explains how the damage is done and why evidence has been so hard to gather
http://www.technologyreview.com/blog/arxiv/24331/
kfc 10/30/2009


Great things are expected of terahertz waves, the radiation that fills the slot in the electromagnetic spectrum between microwaves and the infrared. Terahertz waves pass through non-conducting materials such as clothes , paper, wood and brick and so cameras sensitive to them can peer inside envelopes, into living rooms and "frisk" people at distance.

The way terahertz waves are absorbed and emitted can also be used to determine the chemical composition of a material. And even though they don't travel far inside the body, there is great hope that the waves can be used to spot tumours near the surface of the skin.

With all that potential, it's no wonder that research on terahertz waves has exploded in the last ten years or so.

But what of the health effects of terahertz waves? At first glance, it's easy to dismiss any notion that they can be damaging. Terahertz photons are not energetic enough to break chemical bonds or ionise atoms or molecules, the chief reasons why higher energy photons such as x-rays and UV rays are so bad for us. But could there be another mechanism at work?

The evidence that terahertz radiation damages biological systems is mixed. "Some studies reported significant genetic damage while others, although similar, showed none," say Boian Alexandrov at the Center for Nonlinear Studies at Los Alamos National Laboratory in New Mexico and a few buddies. Now these guys think they know why.

Alexandrov and co have created a model to investigate how THz fields interact with double-stranded DNA and what they've found is remarkable. They say that although the forces generated are tiny, resonant effects allow THz waves to unzip double-stranded DNA, creating bubbles in the double strand that could significantly interfere with processes such as gene expression and DNA replication. That's a jaw dropping conclusion.

And it also explains why the evidence has been so hard to garner. Ordinary resonant effects are not powerful enough to do do this kind of damage but nonlinear resonances can. These nonlinear instabilities are much less likely to form which explains why the character of THz genotoxic
effects are probabilistic rather than deterministic, say the team.

This should set the cat among the pigeons. Of course, terahertz waves are a natural part of environment, just like visible and infrared light. But a new generation of cameras are set to appear that not only record terahertz waves but also bombard us with them. And if our exposure is set to increase, the question that urgently needs answering is what level of terahertz exposure is safe.

Ref: arxiv.org/abs/0910.5294: DNA Breathing Dynamics in the Presence of a Terahertz Field
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Offline Dig

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Terahertz radiation: NWO has been pushing this DNA-busting tech for years
http://www.aip.org/tip/INPHFA/vol-9/iss-4/p27.html
Eric R. Mueller


Until recently, researchers did not extensively explore the material interactions occurring in the terahertz spectral region—the wavelengths that lie between 30 µm and 1 mm—in part because they lacked reliable sources of terahertz radiation. However, pressure to develop new terahertz sources arose from two dramatically different groups—ultrafast timedomain spectroscopists who wanted to work with longer wavelengths, and longwavelength radio astronomers who wanted to work with shorter wavelengths. Today, with continuous-wave (CW) and pulsed sources readily available, investigators are pursuing potential terahertz-wavelength applications in many fields.

Figure 1. An electromagnetic wave is produced by this broadband short-pulse terahertz source when a dc bias is placed across the antenna and an ultrashort pump-laser pulse is focused in the gap.

Bio and astro
Much of the recent interest in terahertz radiation stems from its ability to penetrate deep into many organic materials without the damage associated with ionizing radiation such as X-rays (albeit without the spatial resolution). Also, because terahertz radiation is readily absorbed by water, it can be used to distinguish between materials with varying water content—for example, fat versus lean meat. These properties lend themselves to applications in process and quality control as well as biomedical imaging. Tests are currently under way to determine whether terahertz tomographic imaging can augment or replace mammography, and some people have proposed terahertz imaging as a method of screening passengers for explosives at airports. All of these applications are still in the research phase, although TeraView (Cambridge, England), which is partially owned by Toshiba, has developed a technique for detecting the presence of cancerous cells that is currently in human trials.

Terahertz radiation can also help scientists understand the complex dynamics involved in condensed-matter physics and processes such as molecular recognition and protein folding.

CW terahertz technology has long interested astronomers because “approximately one-half of the total luminosity and 98% of the photons emitted since the Big Bang fall into the submillimeter and far-infrared,” says Peter Siegel of the Jet Propulsion Laboratory (Pasadena, CA), and CW THz sources can be used to help study these photons.

One type of CW terahertz source is the optically pumped terahertz laser (OPTL). OPTL lasers are in use around the world, primarily for astronomy, environmental monitoring, and plasma diagnostics. A system installed at the Antarctic Submillimeter Telescope and Remote Observatory at the South Pole is the local oscillator for a THz receiver, which will be used to measure interstellar singly ionized nitrogen, H2D+, and carbon monoxide during the polar winter. Another system is slated for sub-Doppler terahertz astronomy use on the National Aeronautics and Space Administration’s SOFIA airborne astronomical platform.

In 2004, a 2.5-THz laser will ride a Delta rocket into space aboard NASA’s AURA satellite to measure the concentration and distribution of the hydroxyl radical (OH–) in the stratosphere, a critical component in the ozone cycle. (Currently there are no global data for OH– concentrations; only two spot measurements have been made using OPTL systems carried aboard high-altitude balloons.) The AURA system is less than 0.2 m3, weighs less than 22 kg, and consumes 120 W of prime power. It works autonomously and is designed to operate in orbit for more than five years.

The emerging field of time domain spectroscopy (TDS) typically relies on a broadband short-pulse terahertz source (Figure 1). A split antenna is fabricated on a semiconductor substrate to create a switch. A dc bias is placed across the antenna, and an ultrashort pump-laser pulse (<100 fs) is focused in the gap in the antenna. The bias–laser pulse combination allows electrons to rapidly jump the gap, and the resulting current in the antenna produces a terahertz electromagnetic wave. This radiation is collected and collimated with an appropriate optical system to produce a beam.

This TDS switch puts out a train of pulses, whose repetition frequency is the same as that of the femtosecond pump laser. Pulse widths are on the order of 100 fs, with average powers of a few microwatts and a frequency spread of >500 GHz. The pulse bandwidth is typically centered at about 1 to 2 THz. The details of the spectrum can vary significantly, however, depending on the design of the switch and pump-laser power, pulse width, and configuration.

Figure 2a shows a typical TDS setup. The terahertz pulse is distorted by selective absorption as it passes through a sample, causing delays in its arrival time at the detector. The transmitted beam is then focused onto a detector, which is essentially identical to the emitter except that it is unbiased. By varying the time at which the sample pump pulse arrives at the detector, successive portions of the terahertz pulses can be detected and built into a complete image of the pulse in terms of its delay time, or time domain. The data are then processed by fast Fourier transform analysis in order to convert the delay time into the frequency of the terahertz signal that arrives at the detector.

The absorption characteristics of terahertz radiation vary greatly from material to material, and this property can be used to create images. In 1995, Binbin Hu and Martin Nuss at Lucent Technologies’ Bell Laboratories created a terahertz imaging system using TDS and coined the term T-ray for these short, broadband terahertz pulses. The T-ray pulse is measured as it reflects from a sample. Because the pulse is so short, distance can be resolved by looking at the time of flight and then used to create a three-dimensional transparent reconstruction of various objects by measuring the time lapse between pulses reflected from different areas within the object (Figure 2b).

Figure 2. In time domain spectroscopy, an image of the sample is built up based on selective absorption, which causes delays in arrival time at the detector (a). A typical result is this three-dimensional tomograph of a tooth, showing areas of decay (b).
(SPIE/Teraview, Ltd.)


Optically pumped lasers
In its simplest embodiment, an OPTL system consists of a grating-tuned carbon dioxide pump laser and a far-infrared (FIR) gas cell mounted in a laser resonator. The pump beam enters the cell through an aperture in the high-reflecting resonator mirror. The pump laser is tuned to the appropriate absorption band, and lasing occurs. For several reasons, this is not as easy as it sounds. Both the absorption bandwidth of the vibrational energy state and the lasing bandwidth of its excited rotational states are quite narrow. Moreover, slight changes in the OPTL’s pumping wavelength or changes in the cavity length itself can inhibit lasing, and feedback interaction between the pump laser and the terahertz laser can affect stability. Therefore, designers must pay careful attention to all of these things to achieve reliable performance.

In the past, research groups often built their own OPTLs, which were typically large and extremely difficult to use and maintain. Today, OPTL laser systems are smaller and more reliable turnkey systems. These improved systems stem from several developments, including permanently sealed, single- mode, frequency-stabilized, folded-cavity, radio-frequency-excited waveguide CO2 lasers; sealed FIR gas cells that eliminate gas transport issues; and exquisitely stable passive resonator structures. The integration of these various improved laser technologies into a truly operator-friendly system has ensured ease of use.

Indeed, OPTLs can operate at many discrete frequencies, ranging from less than 300 GHz (1,000 µm) to more than 10 THz (30 µm). Different molecular gases each have their own spectrum of available lines. Sideband generation technology can add instantaneous tunability to any of the available OPTL laser lines.

Other terahertz sources
Many other terahertz source technologies have been investigated in the past four decades. Numerous groups worldwide are producing tunable CW terahertz radiation using photomixing of near-IR lasers. For example, Gerald Fraser’s group at the National Institute of Standards and Technology is frequency mixing the output of a near-IR, fixed-frequency diode laser with that of a tunable Ti:sapphire laser in a lowtemperature- grown gallium arsenide photomixer fabricated with the appropriate antenna pattern. This approach yields tens of nanowatts of tunable output with a spectral content governed by the spectral content of the near-IR laser.

Backward-wave oscillators (BWOs) are electron tubes that can be used to generate tunable output at the long-wavelength end of the terahertz spectrum. To operate, however, they require a highly homogeneous magnetic field of approximately 10 kG.

Direct multiplied (DM) sources, such as those marketed by Virginia Diodes, Inc. (Charlottesville, VA), take millimeter-wave sources and directly multiply their output up to terahertz frequencies. DM sources with frequencies up to a little more than 1 THz and approximately 1 µW of output have been used as local oscillators for heterodyne receivers in select applications, most of which are in radio astronomy. However, they can produce substantially more output power at lower frequencies, and they are often well suited to applications requiring frequencies of less than 500 GHz.

In addition, physicists in Italy, Switzerland, the United States, and the United Kingdom have recently demonstrated quantum-cascade semiconductor lasers operating at wavelengths in the 4.4-THz regime. These lasers are made from 1,500 alternating layers (or stages) of gallium arsenide and aluminum gallium arsenide and have produced 2 mW of peak power (20 nW average power), and advances in output power and operating wavelength continue at a rapid pace. Applying a potential across the device causes electrons to cascade through each stage, emitting photons along the way. The photon wavelength is determined by the thickness of the stages. These lasers currently work best at only a few kelvins, but in the future they could become an important source of commercial terahertz systems.

Table 1 compares some of the techniques for generating terahertz radiation. At present, only the OPTL, TDS, and DM systems are commercially available as turnkey systems. However, many researchers assemble TDS systems in the laboratory using readily available laser sources, and DM sources are often procured from a number of research organizations and at least one commercial source. The availability and operation of BWOs at terahertz frequencies are somewhat problematic, but several groups use lower-frequency (<500-GHz) BWOs for device characterization.

The choice of a terahertz source will determine the type of detection scheme required. Sources with submilliwatt output power complicate detection and often necessitate the use of liquid-helium-cooled bolometers or similar devices. Short-pulse terahertz devices often need gated detection using a TDS switch.

Company   Product
Coherent, Inc.   Optically pumped terahertz lasers, femtosecond laser sources for ultrafast switches
Picometrix, LLC   Imaging system using ultrafast switch
TeraView Ltd.   Imaging system using ultrafast switch
Virginia Diodes, Inc.   Direct multiplier-based sources

For time-domain spectroscopy, or where an overall snapshot of the spectral characteristics of a sample in the terahertz region is important, TDS technology may be the optimal choice. For a more precise, higher-resolution look, consider the OPTL system, using either discrete frequencies or tunable sideband generation technology. Many applications do not need the complete terahertz spectrum of a sample but merely need to identify one or two characteristic features. In these cases, the OPTL system may be preferable to the TDS system because of its operational simplicity, high signal-to-noise ratio, and ability to use conventional, roomtemperature detectors.

Although the practical application of terahertz radiation is in its infancy, the recent availability of reliable sources in the 0.3- to 5-THz range may have a wide-ranging impact on science, industry, and medicine. Short-pulse terahertz systems are used in time-domain spectroscopy to understand biological processes and to create two- and three-dimensional images. CW OPTL systems have been used extensively in aerospace and astronomical applications, primarily for remote sensing, and may find new uses as terahertz applications mature.

Further reading
Arnone, D. D.; et al. Application of terahertz (THz) technology to medical imaging. In Proc. SPIE Terahertz Spectroscopy Applications II; International Society for Optical Engineering: Bellingham, WA, 1999; pp. 209–219.
Köhler, R.; Tredicucci, A.; Beltram, F.; Beere, H. E.; Linfield, E. H.; Davies, A. G.; Ritchie, D. A.; Iotti, R. C.; Rossi, F. Terahertz semiconductor-heterostructure laser. Nature 2002, 417, 156.
Mueller, E. R.; Fontanella, J.; Henschke, R. Stabilized, Integrated, Far-Infrared Laser System for NASA/Goddard Space Flight Center. 11th International Symposium on Space Terahertz Technology, Ann Arbor, MI, May 1–3, 2000. Available here.
Mueller, E. R.; Waldman, J. Power and Spatial Mode Measurements of Sideband Generated, Spatially Filtered, Submillimeter Radiation. IEEE MTT 1994, 42 (10), 1891.
Rochat, M.; Ajili, L.; Willenberg, H.; Faist, J.; Beere, H.; Davies, G.; Linfield, E.; Ritchie, D. Low-threshold terahertz quantum- cascade lasers. Appl. Phys. Lett. 2002, 81, 1381.
Siegel, P. H. Terahertz Technology. IEEE MTT 2002, 50 (3), 910.
Williams, B. S.; Callebaut, H.; Kumar, S.; Hu, Q.; Reno, J. L. 3.4-THz quantum cascade laser based on LO-phonon scattering for depopulation. Appl. Phys. Lett. 2003, 82, 1015.

Eric R. Mueller is manager of engineering and specialty products at Coherent-DEOS in Bloomfield, Connecticut
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Offline Optimus

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You read my mind Dig by retitling the thread. I was just thinking about cellphone radiation must not be killing fast enough so they decided to up the anti with this shit!
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Offline Dig

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Los Alamos Lab Have Terahertz Detectors To See Through Your Clothes From a Mile Away
http://www.wired.com/wiredscience/2010/07/terahertz-detection/
By Jess McNally Email Author July 12, 2010 |  3:16 pm |  Categories: Physics, Tech

Someone may soon be able to tell what types material are in your pockets from tens, and possibly thousands, of feet away.

Using terahertz remote sensing, detectors could see through walls, clothing and packaging materials and immediately identify the unique terahertz waves of the materials contained inside, such as explosives or drugs.

Until now, detecting terahertz waves — the portion of the electromagnetic spectrum between infrared and microwave light — hasn’t been possible from distances more than inches because the waves are absorbed by ambient moisture in the air, killing the signal.

“A lot of other researchers thought that terahertz remote sensing was mission impossible,” said physicist Jingle Liu of Rensselaer Polytechnic Institute, lead author of the study published July 11 in Nature Photonics.

Liu’s team solved the problem by not relying on the terahertz waves themselves to generate or carry the signal back to the detector. Instead, they used the reflection created by lasers pointed at the target.

Two lasers at different frequencies aimed at the target together generate a plasma (basically excited, or ionized air). This plasma emits a florescence that is scattered in characteristic ways by the terahertz radiation of the material it hits. The reflection of the florescence is detectable from remote distances

The researchers have tested hundreds of different substances and created a library of terahertz spectra to compare to the signal from the target and instantly identify the material that was hit.

The researchers demonstrated that they could detect the signal from 67 feet away, the length of their laboratory space, but theoretically they could identify materials hundreds of feet or even miles away, Liu said.

“Homeland security and military agencies have been struggling for years to get technology like this,” said terahertz expert Abul Azad at Los Alamos National Laboratory. “I think the approach they have revealed is really, really unique.”

The first application of this technology will likely be for the remote detection of roadside bombs, also known as improvised explosive devices (IEDs) by the military. Homeland Security and the Defense Department were the primary funders of the research.

Terahertz detectors could also be used for airport security to detect illegal substances hidden in people’s clothes. The approach would be less invasive than x-rays, Liu said, because terahertz waves are much lower in energy. It would not reveal anything concealed inside the body, because the terahertz signals cannot go through water, or metal.

Theoretically, Liu said, terahertz remote sensing could also be used identify the composition of an unknown toxic spill in the environment, or the composition of objects in space.
All eyes are opened, or opening, to the rights of man. The general spread of the light of science has already laid open to every view the palpable truth, that the mass of mankind has not been born with saddles on their backs, nor a favored few booted and spurred, ready to ride them legitimately

Offline chris jones

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 I may be off base but didn't the Philadefia Project have a crack at this, I'm gonna do a look up on this, I'm probably off base.
  Sorry , no hard evidence I can dig up.

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Sounds like Star Trek to me. Everybody wants a Tricorder, right?



 http://www.tricorderproject.org/tricorder-mark2.html

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