Shopping? Check out our latest product comparisons

Laser

The Blade Drive incorporates an adjustable green laser sighting system, along with another...

German cyberpunk weapons-maker Patrick Priebe has created another dangerous toy, and this one's a doozy. Previously, he’s built things such as a laser-sighted wrist-mounted crossbow, and a hand-mounted flamethrower. His latest creation, the Blade Driver, is a full-size laser-sighted crossbow ... oh yeah, and instead of shooting arrows, it shoots spinning rotary saw blades.  Read More

A swarm of laser-wielding satellites could be used to nudge an asteroid off a collision co...

A collision between Earth and an asteroid a few kilometers in diameter would release as much energy as the simultaneous detonation of several million nuclear bombs, and with the impact of an asteroid estimated at around 6.2 miles in diameter believed to be responsible for wiping out the dinosaurs, numerous strategies have been devised to try and avoid such devastation. The latest idea comes from engineers at Glasgow’s University of Strathclyde who suggest that a swarm of laser-wielding satellites could nudge Earth-bound asteroids off their collision course.  Read More

Laser 'un-printers' would allow paper to be re-used, reducing the need for virgin wood pul...

If you’re concerned about deforestation, you likely blue-bin the no-longer-needed sheets of paper that have been run through your printer. You should keep in mind, however, that even though the recycling of that paper saves trees, the process still requires considerable energy, and most recycled paper still contains some virgin wood pulp. What would be better is if there were an “un-printer” that took the toner off of the used paper, so you would be left with a blank sheet that you could reuse. Well, thanks to research being conducted at the University of Cambridge, there soon may be.  Read More

Koji Usami holding the semiconductor nanomembrane inside its holder

Researchers at the Niels Bohr Institute have succeeded in using a new form of laser cooling method to cool a two and a half square millimeter semiconducting gallium arsenide (GaAs) membrane with a thickness of 160 nm from room temperature to four degrees above absolute zero - the temperature of liquid helium.  Read More

After the laser beam hits the sample, the scattered light is collected by a telescope and ...

Contrary to what some cartoons might have led you to believe, explosives aren’t always emblazoned with the letters TNT making them easy to identify. Some people will actually go to the trouble of disguising explosives by placing them in nondescript containers. This means that to analyze them, some close quarter examination that puts someone at risk is usually required. Researchers at the Vienna University of Technology (TU Vienna) have developed a detection method using laser light that allows explosives to be detected not only from distances of over 100 meters (328 ft), but works even when the explosives are hidden inside an opaque container.  Read More

The INSIGHT100 airport security scanner is able to identify the liquid contents of various...

Besides having to remove our shoes, the volume limitations regarding liquids and gels in carry-on baggage has become a major hassle in the world of post 9-11 airport security. Hopefully, however, we may soon be able to once again bring our big bottles of water and tubes of toothpaste aboard airliners in our overnight bags. Britain’s Cobalt Light Systems has developed a scanner called the INSIGHT100, that uses laser light to assess the liquid contents of containers, even if those containers are opaque.  Read More

SLAC's LCLS is the world's most powerful X-ray laser (Photo: University of Oxford/Sam Vink...

To say things are really heating up at the US Department of Energy's SLAC National Accelerator Laboratory isn't just a bad pun, it's one hell (sorry) of an understatement. An Oxford-led team used the Stanford-based facility that houses the world's most powerful X-ray laser to create and probe a 2-million-degree Celsius (or about 3.6 million degrees Fahrenheit) piece of matter. The experiment allowed the scientists the closest look yet at what conditions might be like in the heart of the Sun, other stars and planets.  Read More

Police in the UK are currently testing an anti-riot laser that temporarily blinds targets

After riots this past summer left parts of the UK in shambles, it's no wonder that police in that part of the world are looking for new methods of crowd control. Since the usual methods for subduing rioters were seen as largely ineffective against their sheer numbers at the time, police have been looking into new tactics as well as non-lethal weapons to replace the standard tasers and tear gas. To that end, the next time someone tries to loot a store in England, they may find themselves literally struck blind thanks to a new riot laser currently being tested called the "SMU 100."  Read More

A True 3D pyramid hovers in mid-air  (Image: DigInfo)

Engineers from Burton Inc. in Japan have rolled out a "True 3D" display, which evolved from work begun five years previously by teams at Keio University and Japan's national institute of Advanced Industrial Science and Technology (AIST). While most 3D displays available today involve a form of optical illusion that depends on the parallax or disparity inherent in human binocular vision, this new system, which can function in air or under water, needs no screen of any sort, and the effect is quite impressive.  Read More

Visualization of the acousto-optic effect (Image: NPL)

We've been following the quest for the world's best speakers for some time but remarkably, there's still room for improvement. A key issue that plagues proper sound reproduction (and thus its perceived quality) is a phenomenon known as deconstructive interference. This occurs when audio signals overlap and cancel one another out, creating dead spots which, until recently, have been very difficult to track. Now, a team from Britain's National Physical Laboratory (NPL) has figured out a clever way to make speaker sound "visible" - and they do it with laser light.  Read More

Looking for something? Search our 28,233 articles