• Nicolai Mork: 5 Fast Facts You Need to Know | Heavy

     · Nicolai Mork: 5 Fast Facts You Need to Know. Nicolai Mork,, a 40-year-old MIT grad, has been indicted on terrorism charges in Las Vegas after …

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  • A Green Laser Pointer Hazard

    2. Principles of inexpensive green laser pointer operation The common green laser pointer is a technological marvel that has recently become a commodity item. Twenty years ago, 10 mW of coherent green light could be obtained only from research laboratory-grade lasers that cost over $100,000 and occupied much of an experimental laser table.

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  • Survey and technological analysis of laser and its defense ...

     · The key applications of laser technology can be divided into the domains of health sciences, engineering, and technology and security and defense, as categorized in Fig. 1. One of the rapidly progressing fields in the defense sector is the offensive use of laser for airborne military applications. Laser weapons have many advantages over ...

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  • 300mw Laser Pointers: 300mw Green, Red Lasers

    The Danger Of Green Laser Pointers | MIT Technology Review. 12 Aug 2010 ... Today, you can buy a green laser pointer the size of a ball point pen for ... Cheap green laser pointers can emit dangerous levels of infrared ... Check now. Green Laser Pointers for Astronomy - Royal Astronomical Society of ...

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  • Arpruss''s Activity

     · The brightness of the detected IR then went quite a bit down when I put an IR-block filter on the laser.This article from the MIT Technology Review says that in some cases, a cheap green laser may emit 10X as much IR as green!

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  • Laws | Laser Pointer Safety

     · A bill was introduced in the South Dakota state senate "to make certain uses of laser pointers unlawful." As of January 27 2021, Senate Bill 79 adds a new section stating "If a person knowingly directs light from a laser pointer at a law enforcement officer without the consent of the officer, the person is guilty of a Class 1 misdemeanor. For purposes of this section, a laser pointer is a ...

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  • LEDs may cause retinal toxicity at occupational domestic ...

     · y7 on Jan 5, 2017 [–] You missed the important bit. From the abstract: > The data suggest that the blue component of the white-LED may cause retinal toxicity at occupational domestic illuminance and not only in extreme experimental conditions, as previously reported.

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  • Optical Fault Induction Attacks

    Since then the technology has been improved dramatically. Expensive inert-gas-based lasers and solid-state lasers have been replaced with low-cost semicon-ductor lasers. As a result, the technology has moved from the laboratory all the way down to consumer electronics. T. 5. TT T T T Vdd Vss. 1 3 2 6 4. T T T. 1. T T T. 2 34 56. Fig.1.

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  • Sam''s Laser FAQ

    Visibility of these green pointers is 4 to 5 times that of 635 nm diode lasers or 632.8 nm red HeNe lasers, which in turn appear 6 or 7 times brighter than the older 670 nm laser diode based laser pointers for the same power output.

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  • Future War Stories: FWS Armory: LASERS: the Killer Light

    The word LASER is an acronym for Light Amplification by Stimulated Emission of Radiation and the term was invented by Dr. Gordon Gould in 1957. lasers are tools of the medical field, video game consoles, DVD players, and scanners that are used everyday.Lasers are tightly focused sources of light that have converted energy into the release of photons.

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  • The Danger Of Green Laser Pointers | MIT Technology Review

     · Twenty years ago, a green laser would set you back $100,000 and occupy a good-sized dining room table. Today, you can buy a green laser pointer …

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  • Engadget | Technology News & Reviews

    Find the latest technology news and expert tech product reviews. Learn about the latest gadgets and consumer tech products for entertainment, gaming, lifestyle and more.

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  • Sam''s Laser FAQ

    The most common white light lasers are large frame ion types with a mixture of argon and krypton for the gas fill. White light lasers are now even available in air cooled format. All use a mix of argon and krypton. Many are made for a roughly 60:20:20 ratio of red, green, and blue lines for proper white balance.

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  • LaserOscope | Science 2.0

    Build a laser oscilloscope using Lego, littleBits, Erector set, and the Kano Computer. In honor of The International Year of Light I''ll demonstrate how use the Kano computer to drive a littleBits motor with an optical coupler, or optocoupler. An optocoupler, according to Wikipedia, "is a component that transfers electrical signals between two isolated circuits by using light."

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  • Green Lasers: A Hidden Danger

     · A typical green laser pointer, shown with a simulated beam. Its 5-mW laser emits an intense, narrow beam of light at a wavelength of 532 nanometers. At night the beam is visible for hundreds or even thousands of meters, depending on sky conditions. Devices like this can be purchased for less than $20 from many sources.

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  • MIT Technology Review

    MIT Technology Review. Our mission is to bring about better-informed and more conscious decisions about technology through authoritative, influential, and trustworthy journalism.

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  • Bans & Restrictions | Laser Pointer Safety

    A bill was introduced in the South Dakota state senate "to make certain uses of laser pointers unlawful." As of January 27 2021, Senate Bill 79 adds a new section stating "If a person knowingly directs light from a laser pointer at a law enforcement officer without the consent of the officer, the person is guilty of a Class 1 misdemeanor. For purposes of this section, a laser pointer is a ...

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  • The battery invented 120 years before its time—OR NOT ...

     · So, his new fangled 11th grade advanced chem experiment was as follows. Fill a red outside blue inside double balloon with 2x hydrogen by volume inside. Then fill the red outside with 1x oxygen. Tie the thing off. Let it float to the classroom ceiling. Then set it off using an early green laser pointer. BOOM. Blew half the ceiling tiles off the ...

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  • Time Resolved Fluorescence Spectroscopy

    transmittance is 10-5 for 532 nm light (a shade of green) that blocks the YAG laser light. Within the laser is an even more powerful IR beam having wavelength = 1064 nm (invisible), safely contained within the laser, where it is passed through a crystal which creates the green beam at twice the frequency by a non-linear optical process.

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  • Green

    Green laser pointers outputting at 532 nm (563.5 THz) are relatively inexpensive compared to other wavelengths of the same power, and are very popular due to their good beam quality and very high apparent brightness. The most common green lasers use diode pumped solid state technology to create the green …

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  • Texas Tesla Tower Titillates | Hackaday

     · They showed us a laser pointer reflected off the conference room table, at the Brewster angle there was no reflection. But, if you looked along the edge of the table the light was very bright.

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  • Ask a Physicist: Phone Flash Sharpie Shock!

     · Ask a Physicist: Phone Flash Sharpie Shock! "What''s going on in this video? Our science teacher claims that the pain comes from a small electrical shock, but we believe that this is due to the absorption of light. Please help us resolve this dispute!" Well, I guess this is the kind of mischief that kids are getting up to these days.

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  • The Science Behind Lightsabers

     · Another kind of laser is the kind used in surgeries, like laser eye surgery, which can be used to cut. Those could be used as a basis for a lightsaber. Go technology!

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  • How MIT Decides | MIT Technology Review

     · Barun Singh. archive page. June 1, 2005. Over the past three years, MIT has begun to adopt a new way of making decisions–one that fosters experiential learning of …

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  • Best Practices for Striping Pavement Using Lasers | For ...

     · Step 1. Layout using a tape measure the stop and start marks for all 9-ft. stalls in both the single rows and double rows. Step 2. Measure and mark the centerline. Using a laser…

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  • US7217266B2

    A platform Smart Scalpel system using rapid real-time feedback for effecting laser treatment. The platform system includes an imaging system for rapid real-time detection of tissue characteristics, a processing system for processing the detected characteristics, and a treatment system for effecting treatment in accordance with results of the processing.

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  • 9 Telerobotics | Virtual Reality: Scientific and ...

    Laser radar (LADAR) or laser scanner technology for terrestrial applications is now relatively mature and can be used for both obstacle detection and landmark identification (Besl, 1988; Hebert et al., 1988). Systems developed by the Environmental Research Institute of Michigan (ERIM) and Odetics exemplify the state of the art.

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  • Image Sensors World: LiDAR News: Blickfeld, Outsight ...

     · A potential long-term danger is failure to filter out short-wavelength infrared pump light, a problem the National Institute of Standards and Technology found was common several years ago in green laser pointers. Fiber-laser lidars are pumped by diode lasers emitting in the 900 nm band, which can pose a retinal risk.

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  • LASERS

    Under second, third, or fourth harmonic generation these produce 532 nm (green, visible), 355 nm and 266 nm (UV) beams. This is the technology behind the bright laser pointers particularly at green (532 nm) and other short visible wavelengths. Ytterbium, holmium, thulium, and erbium are other common "dopants" in solid-state lasers.

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  • KTP | Hackaday

     · Sure, getting a free death ray in addition to your green laser sounds like a bargain, but as [Brainiac75] points out, it actually represents a dangerous situation.

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  • ''Building up'' stretchable electronics to be as ...

     · It can communicate wirelessly with a smartphone or laptop up to 10 meters away. The device runs on a total of about 35.6 milliwatts, which is equivalent to the power from 7 laser pointers. The team will be working with industrial partners to optimize and refine this technology. They hope to test it in clinical settings in the future.

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  • Amazon : Books

    Amazon Books has the world''s largest selection of new and used titles to suit any reader''s tastes. Find best-selling books, new releases, and classics in every category, from Harper Lee''s To Kill a Mockingbird to the latest by Stephen King or the next installment in the Diary of a Wimpy Kid children''s book series. Whatever you are looking for: popular fiction, cookbooks, mystery ...

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  • Canada: Iridian announces new anti ...

     · A supplier of laser protective eyewear announced June 21 2013 a new line of glasses designed specifically for pilots. The LaseReflect Aviator LRG10 glasses are said to mitigate the effects of laser illumination incidents. They reflect more than 99% of 532 nanometer green laser light, the most common color in laser attacks.

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  • NASA tests optical links from space

     · I was fortunate enough to get to ask Dr. Donald Cornwell, Lunar Laser Communications Demonstration (LLCD) Mission Manager at NASA, a few questions about the optical technology. He confirmed for me that LADEE still has a traditional S-band radio transponder on board with a maximum downlink data rate of 128 kb/s.

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  • Laser Pointer Safety

     · For red laser pointers, Class 1 would make them barely visible under normal classroom or presentation scenarios. Because green light appears brighter to the human eye, a Class 1 laser pointer may be acceptable. However, LaserPointerSafety has never seen a Class 1 laser pointer. Tags: Switzerland, Class: 1

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  • Self Built Interferometer Measures Nanometer Displacement ...

     · and laser tool measuring options that use this technology. As far as I know, hydrostatic way tech is the very highest pinnacle of all current positioning technology for actual machining use.

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  • NEW TECHNOLOGY ...

    Pioneer New Media Technology. New Coal Mining Technology. Technology Technology News And Business Intelligence. Computrized Orthodontics New Technology. New Technology Products In Pipeline. Recent News On The Ps3 Technology. New Castle Technology. Google New Earth View Technology. News Newest Japanese Technology.

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  • Fuller''s Earth

    This makes the green laser pointer much more expensive than its simpler red counterpart. Another difference between the two lasers is visibility. The human eye is much more sensitive to green light than to red light. This is why the green laser beam seems so …

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  • MIT Laser Pointer Safety Guidelines final

    Laser pointers sold in the United States are required to carry a warning label. The label on a Class 1 or 2 laser with a power output less than 1 milliwatt (mW) reads "Caution." The label on a more powerful Class 3R (formerly 3a) laser, such as the 5 mW green (532-nanometer) pointer shown here, reads "Danger." Safety Guidelines . Recommend the ...

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