| Laser (174) |  |
a floating canopy of laser-cut aluminum meshwork is fitted with dense masses of interconnected glass and polymer filters.
For years, he had been using airborne laser sensors known as Lidar (Light Detection And Ranging) to map
and commissioned the National Center for Airborne Laser Mapping (NCALM) Â to fly a twin-engine plane backwards
and forwards over the tree-tops firing pulses of laser light at the ground below.
All shoot thousands of pulses of laser light and then use sensors to detect any reflections.
Crucially, some of the laser light is also able to penetrate vegetation. So, in the case of areas covered in a forest canopy
But not everyone is convinced by the laser revolution. Archaeologists like Rosemary Joyce, a professor of Mesoamerican archaeology at the University of California, Berkeley,
The maps were created with satellite mapping, airborne-laser technology, and ground-based plot surveys. And the images may help pave the way for a new United nations monitoring system to curb deforestation and forest degradation.
a UV laser is beamed onto a very thin layer of photopolymer causing it to harden.
the platform is lowered so the next layer can be traced out and hardened by the laser. Layer by layer, material is hardened by the laser until a complete object has been printed
and can be removed from the vat of photopolymer. Stereolithographic printers remain one of the most accurate types of hardware for fabricating 3d objects.
Fused deposition modelling (FDM) Selective laser sintering (SLS) Selective laser melting (SLM) Multi-jet modelling (MJM) Clearly this is an industry hung up on three letter acronyms.
including etching identification codes on produce with lasers or micro-percussion markers that make tiny indents.
It s surmounted by a spinning laser turret and knobbed with cameras, radar, antennas, and G. P. S. It looks a little like an ice-cream truck, lightly weaponized for inner-city work.
His team spent twenty-eight days laser-scanning the Mojave to create a computer model of its topography;
The lasers on the roof scanned the area around the car, while the camera looked farther ahead.
It also compared its camera images with its laser scans, so that it could tell what flat terrain looked like from a distance#nd therefore drive a lot faster.#
Arguably the most important outcome of the DARPA field trials was the development of a robust and reliable laser range finder.
His company, Velodyne, makes a unit that packs 64 lasers in a turret that typically rotates at 600 rpm,
Eventually there will be flying drones with lasers mounted on them. Because of the possible dangers, their use will be restricted highly, at least for the most powerful ones.
a floating canopy of laser-cut aluminum meshwork is fitted with dense masses of interconnected glass and polymer filters.
they don t have the laser focus on a single segment of the adoption curve at one time, much less the correct segment.
A laser isotope ratio-meter was developed to search for methane gas on Mars according to Wired UK.
A sample of honey for example can be matched to the flowers of a specific geographic region through the laser analysis. You will know in the case of olive oil
or if it is counterfeited a fake Damien Weidmann laser spectroscopy expert at Rutherford Appleton Laboratory in Harwell England told Wired UK.
Honey is an ideal application for the laser isotope ratio-meter because it's an expensive product to buy
Elkins and his team flew over the rain forests in an airplane shooting laser pulses at the ground in a method called light detection and ranging (Lidar.
what is now Cambodia has been uncovered using airborne laser scanning. The previously undocumented cityscape called Mahendraparvata is hidden beneath a dense forest on the holy mountain Phnom Kulen
and Development Foundation's (ADF) Phnom Kulen program the team relied on airborne laser scanning
Volcanologists set up reflective targets between the fissures and used lasers placed on a mountain ridge six miles away to record changes.
 In April the laser equipment began to detect changes to the mountain s profile;
By late April the laser measurements showed that the bulge was growing at a rate of about five feet per day.'
'On the morning of May 18 USGS volcanologist David A. Johnston camped on the ridge with his lasers radioed in his regular 7 a m. report.
Essentially slow-flying planes send constant laser pulses groundward as they pass over the rain forest imaging the topography below the thick forest canopy.
In 2007 Evil Mad Scientist Laboratories introduced the Candyfab 4000 a DIY printer based on a modified selective laser sintering technique.
Flowing rivers More strong evidence of Mars'wet past comes from Curiosity s discovery of calcium sulfate veins fissures in the surface rock that once sampled with a laser-firing instrument called Chemcam
Macintosh analyzed the skeletons'lower limb bones after scanning them with a portable 3d laser scanner.
and his co-authors simulated the Chicxulub impact conditions in a lab zapping sulfur-rich anhydrite rocks with a laser to mimic the forces of an asteroid colliding with Earth.
More dramatically live confocal laser scanning microscopy was used to produce films showing cancer cells change shape in the presence of Nad1.
These scans map the surface below using laser pulses and they make it possible for researchers to look below tree cover.
In fact laser technology and aerial photos (digitally enhanced) ensured an impressive recreation of the city of Pompeii from the lavish villas down to the paving stones.
See Images from Pompeii Movie The filmmakers used lidar a laser remote-sensing technique to re-create the city's topography on the set.
Lead study author Fernando Espã rito-Santo a research scientist at NASA's Jet propulsion laboratory (JPL) in Pasadena Calif. combined satellite data airborne lidar (laser surface imagery)
and Climate Observation of Planet Earth) would use a laser to actively probe the CO2 in the atmosphere.
But existing lasers and sensors cannot measure CO2 accurately enough to provide meaningful results, according to Fran §ois-Marie Brã on,
California, think that probing the atmosphere with lasers will eventually offer a way to get round-the-clock data
But laser-based systems are technologically challenging. In a recent competition to design atmospheric-science satellites the European space agency eliminated a laser-based carbon-dioxide-monitoring mission
A-Scope, citing insufficient readiness. The technology for a similar NASA mission called ASCENDS (Active Sensing of CO2 Emissions over Nights,
To that end, NASA and the Defense Advanced Research Projects Agency hosted a conference this month to look at strategies for removing debris. The solutions floated include space tugs and Earth-based lasers.
Like the Winrock study, it includes spectral data from NASA satellites as well as laser measurements of forest canopy height from an instrument on NASA's Ice, Cloud,
an aircraft that will combine a state-of-the-art optical sensor with a laser capable of mapping forests in unprecedented three-dimensional detail.
its main research payload was the Italian Space agency's Laser Relativity Satellite (LARES, pictured: sphere on top of the rocket's payload) which will study the Lense-Thirring effect,
and helped to develop its first free-electron laser in 1993, has won his nation's top science and technology award, worth 5 million renminbi (US$794, 000).
scientists fire lasers into the sky to measure the daily rise and fall of a dome of pollution that caps the valley.
while balloons and lasers measure the boundary between the pollution that sits over the city and the cleaner air above.
4 10 january 2013gemini Observatory/AURAORION bullets shot in detail The Gemini South telescope in Chile has been fitted with five lasers
In a separate private letter, Kokabee, who had been studying laser physics at the University of Texas at Austin,
The project will start with the laser data collected by planes flying out of Kinshasa (see Leaf by leaf.
And we DID in fact land on the moon the proof is in the retroreflectors that we can use on a regular basis to measure (with extreme precision) with lasers the distance between Earth and the moon.
Arguably the most important outcome of the DARPA field trials was the development of a robust and reliable laser range finder.
His company Velodyne makes a unit that packs 64 lasers in a turret that typically rotates at 600 rpm continuously strafing the landscape with 64 separate beams.
Terrill uses a laser pointer to indicate the newest find. The hard edges provide bright scatter he says.
Lasers? How much in flight time under power will be required as reserve capability? What kind of rocket motor is required in Earth airspace?
A visual representation of diffuse reflection is when a LASER BEAM hits the surface of milk giving off a glow ball around the LASER spot.
and just want to see me rock out using ballistic laser light check out this RAP MUSIC VIDEO.
Parallel to this the laser measuring system which works in three dimensions generates precise data of the entire surface of the carcasses.
Following a renewed 3d laser measurement a KR 60 also installed in the inverted position breaks the pig s pelvic bone with a cutting tool resembling a cleaver and scores the abdominal wall.
I suppose a civilian drone with an attach laser pointer pointing into the cockpit of a plane would be bad too.@
@mayan Laser pointers are almost completely harmless and aiming one well enough to temporarily blind one of the pilots
I would mention that a laser aimed from the ground is a least as dangerous as one in the air and probably much more powerful.
White Labs'method which uses a precise near-infrared laser spectrometer to directly measure the amount of ethanol in a sample is more precise than my kludgy hydrometer reading
It says White Labs uses a near-infrared laser spectrometer. Maybe but that's not all the methods they use!
Just saying White Labs uses a near-infrared laser spectromete does not say they used it on this sample!
Will pointing a laser at a meteor months away have any significant impact on it's trajectory?
Using 20 cm spaced parallel laser dots to adjust the area of digital still images coral colonies on sloping rock faces had the highest density values well above the threshold of 0
or even aluminum nanoparticles that when triggered by a laser or other outside energy ripple like waves in a pond.
The CAO uses Light Detection and Ranging (Lidar) a technology that sweeps laser light across the vegetation canopy to image it in 3-D. It can determine the location of single standing trees at 3
With Confocal Laser Scanning Microscopy they obtained high-resolution images across three dimensions of six different types of pollen.
#Laser treatments yield smoother metal surfacesever since the Bronze age metals have been cast in different shapes for different applications.
Yingchun Guan from the A*STAR Singapore Institute of Manufacturing Technology (SIMTECH) and her co-workers have shown how different laser-processing methods improve metal surfaces
Laser processing involves scanning a high-intensity laser beam multiple times across the surface of a metal.
The researchers also detected alterations in the alloy's composition through changes in the degree of laser-track overlap.
and as the degree of laser-track overlap increased it changed the composition of the alloy--particularly in the larger areas of melt.
The team's approach particularly the theoretical model is applicable to assess laser processing of other alloys and compounds Guan notes.
But using a powerful new type of confocal laser-scanning microscope the 4pi the scientists discovered that the bordered pits are filled with a mesh membrane of nanofibrils
But since undergoing a cutting-edge minimally invasive surgical procedure called MRI-guided laser ablation at Wake Forest Baptist Medical center Vandyke is poised to reclaim her life.
In the operation the source of Vandyke's seizures--a lesion on her right medial temporal lobe--was destroyed with heat generated by light from a thin laser-tipped probe inserted into her brain through a tiny hole in her skull
and the only one between Philadelphia and Atlanta to perform this type of laser surgery for epilepsy with a technology called Visualase.
and initially used to destroy tumors the Visualase system was employed first as a treatment for epilepsy in 2010 Wake Forest Baptist performed its first epilepsy-related laser procedure in June of last year
The laser method is a much less invasive alternative to conventional surgery. That type of procedure is usually a daylong operation
The entire laser procedure conversely can be completed in about four hours and most patients can go home the next day.
and chose the laser technique. She underwent the operation April 15. Since then she has had just one seizure in late May
By measuring the vibrations between atoms using femtosecond-long laser pulses the Rice lab of chemist Junrong Zheng is able to discern the positions of atoms within molecules without the restrictions imposed by X-ray diffraction (XRD) and nuclear magnetic resonance (NMR) imaging.
But the one-of-a-kind spectrometer developed by Zheng uses very short laser pulses to read the vibrational energies inherent to every atom.
and terahertz lasers used for the experiment captured information about a molecular angle in a mere 100 femtoseconds.
Lidar uses reflected laser light to image vegetation canopy structure in 3-D. The scientists calibrated the Lidar measurements taken at one-meter resolution throughout nearly one million acres (390000 hectares) to the carbon
From these samples the team laser-sorted 9000 cells from which they were able to reassemble
and Drug Administration Hollister and Green used computer-guided lasers to print stack and fuse thin layers of plastic to make up Kaiba's splint.
the Nanovelcro CTC chip laser capture microdissection and whole exome sequencing said Yi-Tsung Lu MD a postdoctoral scientist at the Cedars-Sinai Samuel Oschin Comprehensive Cancer
Next laser capture microdissection technology allows the scientists to selectively cut out and pick up the CTCS from the Nanovelcro Chip virtually eliminating any trace of any contamination from white blood cells
Frederico Fiuza a physicist and Lawrence Fellow at LLNL performed the simulations in order to study the interaction of ultra-powerful lasers with dense plasmas in a proposed method to produce fusion energy the energy
The method known as fast ignition uses lasers capable of delivering more than a petawatt of power (a million billion watts) in a fraction of a billionth of a second to heat compressed deuterium
but adds a high-intensity ultrashort-pulse laser as the spark that achieves ignition. The code used in these simulations was OSIRIS a PIC code that has been developed over more than 10 years in a collaboration between the University of California Los angeles and Portugal's Instituto Superior T cnico.
These simulations are allowing researchers for the first time to model the interaction of realistic fast-ignition-scale lasers with dense plasmas in three dimensions with sufficient speed to explore a large parameter space
Laser-cut photoresistant masks were placed over the h-BN and exposed material was etched away with argon gas.
and a light detection and ranging (Lidar) system was used to calculate tree height by firing millions of laser pulses down to the ground
One line of evidence comes from inspection of light-toned veins with Curiosity's laser-pulsing Chemistry and Camera (Chemcam) instrument
According to Domingue the light-scattering properties of the beetle's shell--which the team experimentally demonstrated using a white laser--made the nano-bioreplicated decoys more lifelike and therefore more attractive to males than the non-textured 3d printed decoy.
#New NASA probe will study Earths forests in 3-DA laser-based instrument being developed for the International Space station will provide a unique 3-D view of Earth's forests helping to fill in missing
because it's a laser-based system called a lidar that can measure the distance from the space-based instrument to Earth's surface with enough accuracy to detect subtle variations including the tops of trees the ground and the vertical distribution of aboveground
GEDI will carry a trio of specialized lasers developed in-house at Goddard and will use sophisticated optics to divide the three beams out into 14 tracks on the ground.
The lasers will illuminate the surface with brief pulses of light that are optimized to pass through the canopy of even very dense forests without causing harm.
The lasers are eye-safe. The team estimates that the instrument will send out 16 billion pulses in one year.
Using laser mappingto get a better read on the vegetation and hydrology the researcher uses light detecting
The laser mapping technique gathers remote sensing data via an airplane. Nearly $20 million has been put into field data collection by the Australian government in recent years.
and Masayoshi Tonouchi of Osaka's Institute of Laser Engineering discovered a way to detect
Hitting the combined material with femtosecond pulses from a near-infrared laser prompted the indium phosphide to emit terahertz back through the graphene.
The laser gradually removes oxygen molecules from the graphene changing its density and we can see that Kono said.
Laser pulses generated coherent bursts of terahertz radiation through a built-in surface electric field of the indium phosphide substrate that changed due to charge transfer between the graphene and the contaminating molecules.
The team integrated airborne laser mapping technology using the Carnegie Airborne Observatory with field data
The CAO sweeps laser light across the vegetation canopy to image it in 3-D enabling the determination of the location and size of each tree at a resolution of 3. 5 feet (1. 1 meter.
By combining the CAO laser information with satellite maps of forest cover deforestation and other environmental variables generated by the Peruvian Environment Ministry's Directorate of Land Management a cost-effective means to monitor the country into the future has been established.
low cost laser technique to improve properties and functions of nanomaterialsby â#drawingâ##micropatterns on nanomaterials using a focused laser beam scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applications.
The research team fabricated a photodetector using laser modified Mos2 film and demonstrated the superior performance of Mos2 for such application.
This is the first observation of such a laser-modified behaviour from the mesoporous silicon nanowires to be reported.
 The researchers systematically studied the laser-induced modification to gain insights into establishing control over the optical properties of the mesoporous silicon nanowires.
The research team demonstrated that the micropatterns created at a low laser power are invisible under bright-field optical microscope
and photo identification/laser photogrammetry--making measurements from photographs--which provided insight into whether the manta rays were staying in this habitat for longer time periods by tracking their comings and goings.
Projects involving L-CAS include a 12-month feasibility study funded by a £132000 grant from the Technology Strategy Board to create a system of laser sensors to accurately control agricultural sprayers.
Dermatologists also have advanced ways to treat scarring including chemical peels microdermabrasion and laser technologies. And they're generally more cognizant of the psychological damage that acne can inflict.
and some string--no fancy laser levels or survey equipment needed. Once excavated add at least four inches of good organic compost to help with plant growth. 4. Choose plants carefully--There are many plants that do well in rain gardens or occasionally flooded areas.
OPALS tests the use of laser optics to transfer information to the ground. Using a laser beam instead of radio frequency could improve communication data rates by a factor of 10 to 100.
Lasers help provide a more efficient transmission which can be hundreds to thousands of times narrower in comparison to radio waves.
A ground telescope will transmit a laser beacon to OPALS on the space station as it travels across the sky.
It's like trying to use a laser to point to an area that's the diameter of a human hair from 20-to-30 feet away
and matrix-assisted laser desorption/ionization using time of flight or MALDI-TOF. We are approaching this very systematically using the latest technology says Anand.
As a means of tracking changes in the structure of bones over time Macintosh laser-scanned skeletons found in cemeteries across Central europe concentrating in particular on an analysis of engineering-based cross-sectional geometric properties as measures of the loading imposed on the lower limb
Using a portable desktop 3d laser surface scanner to scan femora and tibiae she found that male tibiae became less rigid
Airborne lasers help researchers understand tree growthout of an effort to account for what seemed in airborne images to be unusually large tree growth in a Hawaiian forest scientists at Brown University
They culled satellite observations from MODIS and NASA's Ice Cloud and land Elevation Satellite (ICESAT) Geosciences Laser Altimeter System (GLAS)
or a laser set up a harmonic oscillation of the surface charges similar to waves. In the process they scatter light that can be read by a spectrometer which captures
#Laser scientists create portable sensor for nitrous oxide, methanerice University scientists have created a highly sensitive portable sensor to test the air for the most damaging greenhouse gases.
and laser pioneer Frank Tittel and his group uses a thumbnail-sized quantum cascade laser (QCL) as well as tuning forks that cost no more than a dime to detect very small amounts of nitrous oxide and methane.
That allows for far better detection of gases than more common lasers that operate in the near-infrared.
and is far better able to detect trace amounts of gas than lasers used in the past.
Co-authors include Rice graduate student Wenzhe Jiang and former Rice Laser Science Group members Przemystaw Stefanski Rafat Lewicki Jiawei Zhang and Jan Tarka.
Once the molecules are in place the researchers can chill them heat them blast them with energy from a laser or electric current and measure the effect through spectroscopy
and cheek using laser speckle flowgraphy. The data was recorded 5 s before stimulation and 20s after stimulation.
In addition the skin blood flow in the right index finger was measured by laser Doppler flowmetry. The researchers also continuously monitored the heart rate
Let me shine this laser in your eyeâ Â Tell me about how the palm reader works.
Instead of using lasers or cameras and algorithms or satellite GPS, this is guided by a cable that emits a electromagnetic signal.
I ve tried laser cutting the leather but found the whole experience actually alienates me from the made object.
Beijing invests millions in laser writing scheme for pork productsbeijing-Â With a few days left before Chinese New Year,
a worker for Beijing based company ZHD Laser said, pointing out the marks with an LED torch.
which use lasers to burn these codes onto the pigs after they are slaughtered, part of a food safety plan launched this week by the Beijing government.
One of the codes printed onto pig skin with a laser. In response, Beijing's Government has launched the ŠMeat Reassurance  project.
As well as the codes etched onto pigs bodies with lasers, customers at sixty-seven supermarkets across Beijing will receive a printed code each time they buy pork,
--and have a laser-like focus on productivity. Innovation lies at the heart of society. Â Science and technology research lie at the heart of innovation.
In 2009 researchers suggested labeling fruit with laser-etched tattoos. This February scientists announced the development of spoilage-detecting silk stickers.
To create the map, the research team used data from the Geoscience Laser Altimeter System lidar on NASA's ICESAT satellite.
Laser-etched'tattoos'an alternative to sticker labels on fruityou'd think there would be a better way to label
--and it comes with the help of lasers. Laser etching that can effectively'tattoo'produce has been found to be effective to help identify fruit at the supermarket.
Invented by former University of Florida scientist Greg Drouillard--now with Sunkist Growers--the technology helps do away with sticky labels that can mar the fruit's skin
, and Florida researcher Edgardo Etxeberria first thought to apply the laser technology to fruit. The system works by using a carbon dioxide laser beam to etch information into the first few outer cells of the fruit peel.
The laser label must be covered with wax. Well, maybe. Testing on a grapefruit has shown that the wax may be unnecessary,
To test for decay, the fruit was inoculated with decay organisms and then etched with the laser.
The laser actually cauterizes the peel, making it impenetrable to microorganisms. But a grapefruit and an apple are two different challengesm
which appraisers have placed traditionally great importance on as a way to authenticate objects) can be copied by lasers with great precision.
Lefsky appears to have caught ICESAT before the satellite's last laser failed in February and it was taken out of commission.
ICESAT was using a laser technology similar to radar, called lidar, to measure global topography, vegetation, the mass of ice sheets and the height of aersols and clouds.
The data Lefsky used for his map comes from more than 250 million laser pulses from ICESAT,
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