| Visual_Quantum_Mechanics Instructional units that introduce quantum physics to high school and college students who do not have a background in modern physics or higher level math using interactive computer programs and digit |
| Visual_Quantum_Mechanics Contains a collection of QuickTime movies showing solutions of the Schrödinger and Dirac equation and the homepage of the book Visual Quantum Mechanics by Bernd Thaller. |
| Cosmic_Strings A review by M.B. Hindmarsh and T.W.B. Kibble of the physics which predicts the properties of cosmic strings and topological defects. |
| Cosmic_Strings_and_other_Defects A series of articles on topological defects in the universe |
| Formation,_Interaction_and_Observation_of_Topological_Defects A survey of defect distributions in first-order phase transitions, by Tanmay Vachaspati. |
| Topological_Defects A site with links to papers and workshops on topological defects in cosmology |
| Topological_Defects This is an introductory set of lecture notes on topological defects, given to an audience with interests ranging from astronomy to particle physics. |
| Topological_Defects_and_Cosmology A review of the effects of defects in cosmology, by Robert H. Brandenberger. |
| Topological_Defects_in_Cosmology A review by Ajit M. Srivastava of various topological defects in particle theoryu models of the early universe (in PDF format). |
| Anacapa_Sciences,_Inc_ Research on human behavior and performance in systems and organizations, development of training in real and virtual environments, human-centered design and testing of systems, equipment, and procedur |
| Applied_Safety_and_Ergonomics,_Inc_ Human factors, ergonomics, and safety engineering consultants with expertise in warnings, product safety, occupational safety, transportation safety, occupant protection, human error, human movement, |
| Beta_Research,_Inc_ Consulting and research in usability and safety in product and system design. Includes company details and links to standards and references on technical reports. |
| Carlow_International_Incorporated Description of human factors engineering and ergonomics services. Areas of expertise include: ships and maritime, care for the elderly, ergonomics and usability testing. (US and Ireland) |
| Consultants_Directory__Human_Factors_and_Ergonomics_Society Searchable directory of human factors and ergonomics consultants. Provides contact information for HFES members by area of specialty, last name, business name, location and expertise. |
| Convergent_Design_Inc Description of consulting services focused on the design of "products that understand people". |
| Ergonomic_Systems_Design,_Inc_ Consultant in the application of human factors engineering methods, and ergonomic data to facilities, vehicles, equipment, devices, and jobs. Site includes information on human factors engineering ser |
| Error_Analysis,_Inc_ Human factors, safety and accident reconstruction consultants. Corporate info, clients, and publications. |
| Human_Engineering_Limited Specialists in ergonomics and human factors solutions including design, evaluation, analysis and research.(UK and Scotland) |
| Human_Factors_Consultants Consultation and legal expertise in human factors issues of safety, warnings, human error, accident evaluation, equipment design, and training adequacy. Site includes services, biographical informati |
| Human_Factors_Engineering_Solutions Research and management of human factors and is a registered ergonomics consultancy specializing in user interface and design. [Stirling, Scotland] |
| Human_Factors,_M_D_ Usability engineering firm focused exclusively on the medical device industry. Services include: User Research, Product Assessments, Software User Interface Design and Human Factors Program Developmen |
| humfax Applying fundamental psychological principles to the design of industrial products. |
| IDEO Specialists in human factors, psychology, business, design, engineering and manufacturing provide full service consulting for product innovation and design. Site describes services, methods and provid |
| Ixian_Technologies A full-service market research and usability consulting firm. Specialties include: usability and HF Analysis, usability testing/analysis, voice technology interface design, design for accessibility/AD |
| Purswell_&_Purswell,_Engineering_&_Ergonomics,_Inc_ Consultant providing ergonomics and safety consulting services to manufacturers, government agencies, and attorneys in the following areas: Traffic Safety, Occupational Safety, Product Safety, Biomech |
| Roebuck_Research_and_Consulting Expert assistance with questions of human body dimensions(anthropometry) and their applications to ergonomic designs. John Roebuck can help you write proposals, plan surveys, analyze data, prepare rep |
| Samaras_&_Associates,_Inc_ Human factors consultant specializing in medical device and pharmaceutical manufacturing equipment ergonomics, especially where automation is a critical component. (US) |
| Thompson,_David_A___PhD Human factors consultant with expertise in vehicle operation, machine guarding, biomechanics, warnings and instructions and falling objects injuries.(US) |
| UserWorks,_Inc_ Usability services, in-house portable usability labs, HCI (human computer interaction), human factors engineering, ergonomics, focus groups & user interface design. (US- Maryland) |
| Ambient_Software Products to connect digital weather stations data to the internet, providing a real-time monitoring tool. |
| AvnPlotter_1_2 Software from Australian Severe Weather used to browse aviation AVN product data especially for storm predictions. AvnPlotter 1.2 to plot Surface Lifted Index, Winds, temperature, relative humidity, C |
| DIAD_Incorporated Specializes in real-time environmental monitoring. |
| A_Guide_to_GRIB The WMO format for the storage of weather information and the exchange of weather product messages in gridded binary form. |
| HamWeather Add weather information to your web site. Runs on Unix, NT and Win95/98 Web servers. |
| InterRAD_-_A_system_by_Freese-Notis_Weather InterRAD is both browser and special software accessed system available with NEXRAD images generated by some of the fastest systems ever. Radar pictures can be fully panned and zoomed-in upon with th |
| Jorick_Enterprises_Weather_Software Weather Logger software reads weather data from Radio Shack WX200, and Oregon Scientific WM-918, WMR-918, and WMR968 weather stations. Outputs graphs and text observations. Windows compatible. |
| Skywatch_Weather_Software Skywatch has a variety of weather software items specifically suited for Skywarn members to avid weather watching enthusiasts. Emergency managers to storm spotters will find resources here. |
| Storm_Laboratory Weather software offered includes MeteOS 2006 to run the MM5 weather model, WXSN 2006 to plot radiosonde data, and WXOB 2005 to create meteograms. |
| Unidata The Unidata Program provides meteorological software and data to universities |
| Weather_Graphics_Technologies Forecasting products and home of software titles such as Digital Atmosphere and Weathergraphix. |
where the symbol on the right hand side of the inequality, the h with a slash through it is known as "h bar" and represents the Planck constant h divided 2 pi.The above is a statement of the Heisenberg UncertaintyPrinciple. A consequence of the Uncertainty Principle is that if an object's position x is defined precisely then themomentum of the object will be only weakly constrained, and vice versa.One cannot simultaneously find both the position and momentum of an object to arbitrary accuracy.This uncertainty leads to some strange effects. For example, ina Quantum Mechanical world, I cannot predict where a particlewill be with 100 % certainty. I can only speak in terms of probabilities.For example, I can only say that an atom will be at some location with a 99 % probability, and that there will be a 1 % probability it will be somewhere else (in fact, there will be a small but finite probabilty that it can even be found acrossthe Universe). This is strange.We do not know if this indeterminism is actually the way the Universe works, because the theory ofQuantum Mechanics is probably incomplete. That is, we do notknow if the Universe actually behaves in a probabilistic manner (there are many possible paths a particle can follow and the observed path is chosen probabilistically) or if the Universeis deterministic in the sense that I could predict thepath a particle will follow with 100 % certainty.A consequence of the Quantum Mechanical nature of the world isthat particles can appear in places where they have no right to be (from an ordinary, common sense [classical] point of view)!This has interesting consequences for nuclear fusion in stars.