Could you really pop a house-sized batch of popcorn with a laser beam like a fiendish band of tech geeks did in the movie Real Genius? Will we ever have lightsabers like Luke Skywalker? Who will fulfill Dr. Evil’s simple request to have sharks with frickin’ laser beams attached to their heads? Real-life laser weapons are slowly making their way from the laboratory to the battlefield, whether underwater, in space, on the ground, or shooting down missiles from the air. Still, they are far from being agile or easy to handle. A laser weapons engineer sheds light, so to speak, on the sober life of military laser weapons research and why the ultimate laser weapon remains a Hollywood and military fantasy…for now.
Directed Energy Weapons
===================
Directed energy weapons take many forms. From EMP (electromagnetic pulses) to HPM (high powered microwaves), several weaponized forms of Radio Frequency are being developed.
These .pdf’s from the US Navy Directed Energy Warfare Office (DEWO) show multiple applications for defensive / offensive Radio Frequency weaponry.
Many people have fallen behind the times in regards to understanding what capabilities are being developed, and what current next generation weapons are being deployed.
http://wstiac.alionscience.com/pdf/Vol4Num3.pdf
for many more visit :
hossamozein.blogspot.com/2011/08/laser-wepon.html
Directed Energy Weapons
===================
Directed energy weapons take many forms. From EMP (electromagnetic pulses) to HPM (high powered microwaves), several weaponized forms of Radio Frequency are being developed.
These .pdf’s from the US Navy Directed Energy Warfare Office (DEWO) show multiple applications for defensive / offensive Radio Frequency weaponry.
Many people have fallen behind the times in regards to understanding what capabilities are being developed, and what current next generation weapons are being deployed.
http://www.navsea.navy.mil/nswc/dahlgren/Leading%20Edge/Directed%20Energy/files/inc/1250074754.pdf
for many more visit :
hossamozein.blogspot.com/2011/08/laser-wepon.html
Seminar report on directed energy weaponsVishal Bait
After decade of research and development, Directed energy weapon are become an operational reality. Such weapons generate streams of electromagnetic energy that can precisely aimed over long distance to disable or destroy target. It is game changing technology in future.
Directed Energy Weapons
===================
Directed energy weapons take many forms. From EMP (electromagnetic pulses) to HPM (high powered microwaves), several weaponized forms of Radio Frequency are being developed.
These .pdf’s from the US Navy Directed Energy Warfare Office (DEWO) show multiple applications for defensive / offensive Radio Frequency weaponry.
Many people have fallen behind the times in regards to understanding what capabilities are being developed, and what current next generation weapons are being deployed.
http://wstiac.alionscience.com/pdf/Vol4Num3.pdf
for many more visit :
hossamozein.blogspot.com/2011/08/laser-wepon.html
Directed Energy Weapons
===================
Directed energy weapons take many forms. From EMP (electromagnetic pulses) to HPM (high powered microwaves), several weaponized forms of Radio Frequency are being developed.
These .pdf’s from the US Navy Directed Energy Warfare Office (DEWO) show multiple applications for defensive / offensive Radio Frequency weaponry.
Many people have fallen behind the times in regards to understanding what capabilities are being developed, and what current next generation weapons are being deployed.
http://www.navsea.navy.mil/nswc/dahlgren/Leading%20Edge/Directed%20Energy/files/inc/1250074754.pdf
for many more visit :
hossamozein.blogspot.com/2011/08/laser-wepon.html
Seminar report on directed energy weaponsVishal Bait
After decade of research and development, Directed energy weapon are become an operational reality. Such weapons generate streams of electromagnetic energy that can precisely aimed over long distance to disable or destroy target. It is game changing technology in future.
Electronic Warfare Training Crash Course by TONEX
Electronic Warfare Training Crash Course sets up Electronic Warfare (EW) establishment intended for examiners, engineers, electrical specialists, venture directors, electronic warfare specialized experts who outline or work radar frameworks and electronic warfare frameworks; and anybody engaged with arranging, plan, investigation, reenactment, prerequisites definition, execution detail, obtainment, test, security and assessment of electronic assault hardware.
Electronic Warfare Training Crash Course depicts military activity including the utilization of electromagnetic (EM) and coordinated vitality (DE) to control the EMS or to assault the adversary. TONEX has been a pioneer in electronic warfare preparing administrations since 1992.
#Who Should Attend Electronic Warfare Course
Technical personnel
Electronic warfare or radar system planning, design, development, operations and maintenance
Electrical engineers
Software engineers
System engineers
System analysts
Cyber security professionals
Verification and validation personnel
Project managers
Program managers
#Learning Objectives
Endless supply of Electronic Warfare Training Crash Course, the participants can:
Rundown premise of Electronic Warfare (EW) ideas, engineering and methods
Investigate the utilization of electronic warfare ideas to ground, airborne and maritime surface warfare
Depict the key ideas of electromagnetic field hypothesis
Depict prorogation models, correspondence block and sticking execution expectation
Outline observable pathway (LOS), two-beam, and blade edge diffraction engendering models
Comprehend the essentials of radars and radar cross area
Portray EW and surveillance beneficiary framework configuration exchange off
Give cases of Directed vitality weapons and stealth
Depict how hunt and following radars work
Rundown the utilitarian and operational susceptibilities of weapon frameworks to electronic warfare
Comprehend Electronic Warfare Systems Engineering and System of Systems Engineering (SoSE) standards
Comprehend the application displaying, reproduction and net-driven engineering to electronic warfare.
#Course Agenda
What is Electronic Warfare (EW)?
Electronic Warfare principles
Overview of signals such as radio, infrared or radar
Electronic Warfare architecture
Naval EW
Ground EW
Airborne EW
Cyber EW
RF electronic warfare
Infrared Countermeasures
Visit Tonex website for more information about this course
https://www.tonex.com/training-courses/electronic-warfare-training-crash-course/
Rural electrification through solar and wind hybrid systemnissy marla
The aim of this work is design and implementation of a Hybrid power generation system using wind energy photovoltaic solar energy- solar energy with Nano-antenna for continuous (24*7) power generation.
Presentation by Corinne Kramer, an analyst in CBO’s National Security Division, as part of the Global Security Technical Webinar Series at the Massachusetts Institute of Technology.
This briefing addresses questions of the evolution of airpower for 21st century operations. The impact of the F-35 and the reshaping of the use of legacy aircraft is the focus of attention. The briefing was delivered to the European Air Group at High Wycombe in November 2014.
Electronic Warfare Training Crash Course by TONEX
Electronic Warfare Training Crash Course sets up Electronic Warfare (EW) establishment intended for examiners, engineers, electrical specialists, venture directors, electronic warfare specialized experts who outline or work radar frameworks and electronic warfare frameworks; and anybody engaged with arranging, plan, investigation, reenactment, prerequisites definition, execution detail, obtainment, test, security and assessment of electronic assault hardware.
Electronic Warfare Training Crash Course depicts military activity including the utilization of electromagnetic (EM) and coordinated vitality (DE) to control the EMS or to assault the adversary. TONEX has been a pioneer in electronic warfare preparing administrations since 1992.
#Who Should Attend Electronic Warfare Course
Technical personnel
Electronic warfare or radar system planning, design, development, operations and maintenance
Electrical engineers
Software engineers
System engineers
System analysts
Cyber security professionals
Verification and validation personnel
Project managers
Program managers
#Learning Objectives
Endless supply of Electronic Warfare Training Crash Course, the participants can:
Rundown premise of Electronic Warfare (EW) ideas, engineering and methods
Investigate the utilization of electronic warfare ideas to ground, airborne and maritime surface warfare
Depict the key ideas of electromagnetic field hypothesis
Depict prorogation models, correspondence block and sticking execution expectation
Outline observable pathway (LOS), two-beam, and blade edge diffraction engendering models
Comprehend the essentials of radars and radar cross area
Portray EW and surveillance beneficiary framework configuration exchange off
Give cases of Directed vitality weapons and stealth
Depict how hunt and following radars work
Rundown the utilitarian and operational susceptibilities of weapon frameworks to electronic warfare
Comprehend Electronic Warfare Systems Engineering and System of Systems Engineering (SoSE) standards
Comprehend the application displaying, reproduction and net-driven engineering to electronic warfare.
#Course Agenda
What is Electronic Warfare (EW)?
Electronic Warfare principles
Overview of signals such as radio, infrared or radar
Electronic Warfare architecture
Naval EW
Ground EW
Airborne EW
Cyber EW
RF electronic warfare
Infrared Countermeasures
Visit Tonex website for more information about this course
https://www.tonex.com/training-courses/electronic-warfare-training-crash-course/
Rural electrification through solar and wind hybrid systemnissy marla
The aim of this work is design and implementation of a Hybrid power generation system using wind energy photovoltaic solar energy- solar energy with Nano-antenna for continuous (24*7) power generation.
Presentation by Corinne Kramer, an analyst in CBO’s National Security Division, as part of the Global Security Technical Webinar Series at the Massachusetts Institute of Technology.
This briefing addresses questions of the evolution of airpower for 21st century operations. The impact of the F-35 and the reshaping of the use of legacy aircraft is the focus of attention. The briefing was delivered to the European Air Group at High Wycombe in November 2014.
Laser Techniqus Company revolutionizes the rifle barrel and gun tube inspection process with Laser-Based Sensors, BEMIS(TM) Bore Erosion Measurement Inspection System
War spying night vision through wireless camer by andriod applications NIRDESH GOTHANIA
This project is made by roopal pancholi,sapna sharma&monika uppadhya of B.Tech electrical students of career point university in this we have used RF-modue of MHz frequency inspite of 8051microcontroller and in place of camera a app i.e. IB Webcam and control all the operations.
2014 IEEE Int. Symposium on System Integration (SII) : Project on Development...Kensuke Harada
This paper discusses the vision/manipulation technology where a dual-arm manipulator first picks up an object from the pile, then regrasps it from the right hand to the left hand, and finally places it to the fixture. We especially focus on the grasp/manipulation planner for a dual-arm manipulator. Here, our grasp planner is well applied for objects which can be approximated by multiple cylinders. Our pick-and-place planner can quickly find a robot motion with regrasp. We also explain our vision technology to measure the position/orientation of an object. To show the effectiveness of our proposed approach, we show an experimental result of a dual-arm manipulator.
War Field Spying Robot with Fire Fighting Alarm.vansh_raheja
This is a project presentation on war field spying robot with fire fighting alarm. This presentation will helpful for those who want to make robots basically a Spy Robot. This will describes the hardware and the software requirements of the project. This will also describe the use of this project in different areas.
Ramesh is available for interview and he can do only C2C
We have 40 software engineers currently on our W2 that are available for rates are from $100 corp to corp NO Full time pls email zed@tekforcecorp.com And varsha@tekforcecorp.com and copy sandy4singh@gmail.com Tekforce corp engineers rates between $95 / $100 our candidates are very senior level engineers . Please notify me via email with your urgent requirements that are direct clients requirements.
Lasers in dentistry1/ orthodontic course by indian dental academyIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Lasers in dentistry/ orthodontic course by indian dental academyIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
It's a Basic concept of Laser on the basis of bandgap. I tried to explain on the easiest way the semiconductor and then i gave the view on Islamic perspective about Laser concept.
Lasers in dentistry (2)/ orthodontic course by indian dental academyIndian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.
PRESENTATION 4- Basics of Laser in Dermatolgy
It includes -
Laser spectrum
Definition Laser
Classification of Lasers
Laser Theories
Laser terminology
Laser Hazards
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
PHP Frameworks: I want to break free (IPC Berlin 2024)
Laser weapons
1. Where’s My Laser Shark? Laser
Weapons Demystified
Nerd Nite
November 12, 2010
Olivia Koski
2. The Ultimate Laser Weapon
“Now all we have to do is build it.” – Real Genius (1985)
http://www.oliviakoski.com
3. Incoherent Versus Coherent Light
50 Watt bulb = harmless
50 Watt laser = DANGER!
Irradiance = Power / Area
Dime radius = 0.895 cm
Irradiance = 50 Watts* / p r2
Safest exposure for
1 second of green beam = 0.03 J/cm2 20 W/cm2 or 20 J/cm2 for 1 second
For a focused beam at 0.05 cm,
that’s 6,366 J/cm2
*Laser Weapon = 100,000 W OUCH!
http://www.oliviakoski.com
5. What Do You Mean By Laser?
Chemical Lasers
Free Electron Lasers
(Requires Particle Accelerator)
Jefferson Laboratory
Gas Laser (like Helium-Neon)
http://www.oliviakoski.com
6. What Do You Mean By Laser?
The chemical laser is the most
powerful laser weapon
Solid state lasers weapons are
more compact but less powerful
than chemical laser weapons
Textron
Northrop Grumman
http://www.oliviakoski.com
7. Some Quick Laser Physics
E = mc2
DE = hn = hc/l
h = Plank’s constant
v = frequency
l= wavelength
c = the speed of light
DE = hn
http://www.oliviakoski.com
8. How to Build a Laser
LASER = Light Amplification through Stimulated Emission Radiation
Get a laser rod (your gain medium)
Add pump powerPut on your laser
goggles
Put mirrors around itPut mirrors around it
http://www.oliviakoski.com
11. The Real-life Missile Shoot Down
The Airborne Laser Shot down a missile on February 11, 2010 off the coast of California
http://www.oliviakoski.com
12. A Flaw in the Laser Science of Real Genius
The real Airborne Laser is actually invisible (1315 nm)
http://www.oliviakoski.com
13. Ray Guns versus Light Sabers
When was the last time soldiers had a sword fight?
Soldiers still shoot at each other all the time.
http://www.oliviakoski.com
14. An Elegant Weapon For A More Civilized Age?
“Not as clumsy or random as a blaster.”
Obi-Wan Kenobi
http://www.oliviakoski.com
15. A laser makes a much better gun than a sword.
Just saying.
But there are still major flaws in the laser science of Star Wars:
silly noises and random visible wavelengths
http://www.oliviakoski.com
16. The U.S. Air Force Built a Non-Lethal Laser Gun
Personnel Halting and Stimulation
Response Rifle (PHaSR)
Low power Infrared and Visible lasers
It will not hurt you, but it will startle
you temporarily
“PHaSR, or Personnel Halting and Stimulation Response, is a rifle sized
counter personnel nonlethal laser weapon system. PHaSR achieves the
desired degree of protection through the synergistic application of two
non-lethal laser wavelengths during the course of protection activities
that will deter, prevent, or mitigate an adversary’s effectiveness. The
laser light from PHaSR temporarily impairs aggressors by “dazzling”
them with one wavelength. The second wavelength causes a repel
effect that discourages advancing aggressors.” –U.S. Air Force
http://www.oliviakoski.com
17. This is not an elegant weapon for a more civilized age
1 Watt 445 nm made by
Wicked Laser - $300
But it can hurt you!
Especially your eyes – wear goggles!
No plans to issue these to soldiers any time soon.
It’s a novelty.
http://www.oliviakoski.com
18. Okay, so what about those laser sharks?
http://www.oliviakoski.com
19. Seriously, It Wouldn’t Be That Difficult.
http://www.flickr.com/photos/the-lees/134610871/in/photostream/
500 mW green laser for $2000
1. Buy a green laser
2. Design a head piece
3. Hire a trained professional to attach it to the shark*
* I don’t actually recommend doing this but it is
technically quite possible http://www.oliviakoski.com
20. How Well Would The Shark’s Laser Move
Through Water?
Hot air makes giraffes look all wonky because
it acts like a bunch of little tiny lenses.
FACT: Light interacts with matter
Water absorbs light
green ~ 510 nm
High Absorption
Low Absorption
Green is not a bad choice
for a shark laser
http://www.oliviakoski.com
21. But Lasers Are Perfect For Space
There is less pesky matter in space to mess up your laser
http://www.oliviakoski.com
22. Lasers In Space, Underwater, or In the Air Are
Still Dangerous To Your Eyes
Always wear your goggles!
Danger Zone
400 nm 1400 nm
Light penetrates eyeball,
can damage the retina
light is absorbed
by cornea, lens
light is absorbed
by cornea, lens
http://www.oliviakoski.com
23. The Most Important Thing About A Laser Weapon
Is Power On Target
It’s all about
Beam
Quality
Good Laser
Bad Laser
Bad Laser
http://www.oliviakoski.com
24. This Is What Happens When BQ Is Good
Boeing’s Advanced Tactical Laser lights the hood of a truck on fire
http://www.oliviakoski.com
25. Why Laser Weapons Are Like Ninjas
Invisible
Silent
Deadly
http://www.oliviakoski.com
26. Thanks!
http://www.oliviakoski.com
Learn About 3D Printing:
http://www.makerbot.com
Follow me on twitter:
http://twitter.com/oliviakoski
Find out what Nerds in New York do
from the Urban Scientist:
http://www.scienceline.org/
A special thanks to all of the Laser Safety Officers out there and all of
my colleagues and friends in Boulder, Boston, and Sunnyvale
http://www.oliviakoski.com
28. Eye damage
• 180–315 nm (UV-B, UV-C) photokeratitis (inflammation
of the cornea, equivalent to sunburn)
• 315–400 nm (UV-A) photochemical cataract (clouding
of the eye lens)
• 400–780 nm (visible) photochemical damage to the
retina, retinal burn
• 780–1400 nm (near-IR) cataract, retinal burn
• 1.4–3.0μm (IR) aqueous flare (protein in the aqueous
humour), cataract, corneal burn
• 3.0 μm–1 mm corneal burn
http://en.wikipedia.org/wiki/Laser_safety
http://www.oliviakoski.com
29. Maximum permissable exposure as a function of wavelength
http://en.wikipedia.org/wiki/File:IEC60825_MPE_J_s.png
http://www.oliviakoski.com
Editor's Notes
http://plaza.ufl.edu/dwhahn/LaserPhoto5.jpg
https://kepler.njit.edu/arch583662-003f07/Assignment%201/Dahlgren,%20Mattias/Breaking%20the%20lightbulb%20Movie.jpg
MPE = maximum permissable exposure
Lightbulb: http://www.flickr.com/photos/clagnut/2865788674/
Semiconductor laser courtesy of Sony: http://www.sony.net/SonyInfo/technology/technology/theme/laser_diode_01.html
He-Ne laser: http://www.piqs.de/fotos/25013.html
http://www.as.northropgrumman.com/products/abl/assets/lgm_ABLMod2_031hr.jpg
Planck's constant = 6.626068 × 10-34 m2 kg / s
Light transmission through a water sample is determined by physical properties such as particle size, shape, SSC, and composition, and chemical properties such as the presence of NIR-absorbing dissolved matter. There is enormous variation in these properties in the environment, resulting in a nearly infinite number of unique optical characteristics for natural and man-influenced water, however, consistent light transmission through a water sample is essential for precise measurements. Suspended sediment concentration and particle size span a 1000-fold range while NIR reflectivity varies by a factor of about 10. The absorption of light by dissolved matter can affect light-scattering measurements by 10 to 50% in runoff from mine tailings. Since lack of understanding of these properties can lead to misinterpretation of SSC values determined with an optical sensor, we review their effects in the following sections and address specific effects in answers to other FAQs about size, color, disaggregation effects.
Laser radiation predominantly causes injury via thermal effects. Even moderately powered lasers can cause injury to the eye. High power lasers can also burn the skin. Some lasers are so powerful that even the diffuse reflection from a surface can be hazardous to the eye. Infrared lasers are particularly hazardous, since the body's protective "blink reflex" response is triggered only by visible light. For example, some people exposed to high power Nd:YAG laser emitting invisible 1064 nm radiation, may not feel pain or notice immediate damage to their eyesight. A pop or click noise emanating from the eyeball may be the only indication that retinal damage has occurred i.e. the retina was heated to over 100 °C resulting in localized explosive boiling accompanied by the immediate creation of a permanent blind spot.[2]
http://www.jimonlight.com/2009/10/16/boeings-advanced-tactical-laser-shoots-cars-in-the-hood/
Boeing advanced tactical laser. COIL, scaled down ABL