| A_Black__Hole_FAQ A good list of FAQ questions with detailed answers. |
| Black_Hole_FAQ Loosely speaking, a black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull |
| A_Black_Hole_on_the_Desk By putting a black hole into a familiar environment like a desk, one may experience what `curvature of space' means in a new way, understanding the cosmological effects of light bending and gravitatio |
| Black_Holes Basic ideas and descriptions of what black holes are and if white holes exist. |
| Black_Holes__General_Information Provides information on black holes. |
| Black_Holes,_Mysterious_Objects_in_Space Elementary information about black holes, including how they are observed, what happens to particles entering one, and a description of their close relatives, neutron stars. |
| Black_Holes_to_Blackboards-God_Divided_by_Zero Laying your hands on a black hole is hard (and dangerous) to do, but there are ways to understand these objects and avoid the pain of dimension-bending. |
| Geometry_Around_Black_Holes A very basic web site on the geometry of black holes and what they would theoretically look like in space time. |
| How_Stuff_Works__How_Black_Holes_Work What are black holes? Do they really exist? How can we find them? |
| Imagine_Science___Black_Holes A service of the High-Energy Astrophysics Learning Center. A nice introduction to black holes. Intended for ages 14 and up. |
| skinny_monkey_takes_a_look_at_black_holes a brief overview of black holes - the maths that allows and describes them, their formation, and their weird properties. |
| XMM__Black_Holes_and_Quasars Educational site on the Birmingham Uni XMM website. |
| Cadmium Data tables and historic information. |
| ChemicalElements_com__Cadmium Basic information, atomic structure, and isotopes. |
| EnvironmentalChemistry_com__Cadmium Atomic structure, chemical and physical properties, and table of nuclides. |
| It\'s_Elemental__Cadmium Basic physical and historical information. |
| LANL__Cadmium Basic information, history, uses, and cost. |
| Lenntech__Cadmium Physical data, chemical properties, health and environmental effects. |
| USGS_Minerals_Information__Cadmium Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| Visual_Elements__Cadmium Image, uses, physical information, key isotopes, and ionisation energies. |
| WebElements__Cadmium Extensive information on history, uses, occurrence, compounds, and properties. |
| Wikipedia__Cadmium Properties of the element, including its history, applications, and characteristics. |
| Aerodynamic_Design_of_Maglev_Vehicles Engineering and design of vehicles focused on aerodynamic aspects based on concurrent engineering, multidisciplinatory design optimization and the research of Joseph P. Schetz. Includes photographs. |
| AMLEV It is a magnetic levitation (maglev) based on permanent magnets and includes a self-stabilizing design based on permanent magnets. |
| Aspects_of_Maglev Future perspectives, potentials and limitations of Maglev. Effects on humans (society), environment (cities, infrastructure) and life style. Photos. Developments in Europe (Germany, Eastern Europe, So |
| Atlanta_Chattanooga_Maglev Group to build a maglev train system between Atlanta, Georgia, and Chattanooga, Tennessee. Includes benefits, technology information, and proposed locations. |
| Baltimore-Washington_Maglev_Project All about the project including definitions, background, newsletter. |
| Boeing__MagLev Description of the magnetic levitation upgrade to the Holloman High Speed Test Track at Holloman Air Force Base, New Mexico. |
| California_Maglev_Alliance Provides information, news and descriptions of maglev in California. |
| Howstuffworks__How_Maglev_Train_Works Explanation of how maglev train levitates and moves |
| Inductrak Passive maglev technology developed by a Livermore team. |
| The_International_Maglev_Board Information on the world's various maglev transportation technologies. Transrapid, linear motor car, linimo, rotem, etc. System deployments, potentials, research efforts, photographs, charts, maps. |
| Introduction_to_Maglev A introductory Q&A on maglev technology, including several relevant links. |
| Maglev_2000_Florida Promotes maglev system for transportation in Florida and provides overview of how this technology works. |
| Maglev_Deployment_Program Information about Federal Railroad Administration's program to select maglev line in the United States. |
| Maglev_Facts Find out more about the Magnetic Levitation technology, possible top speeds, photos of Maglev's and renders of future Maglev's. |
| Maglev_Monorail Promotion of the adaptation of monorail technologies for maglev |
| Maglev_Research_at_Japanese_Railway_Technical_Research_Institute Overview of the research at the Japanese Railway Technical Research Institute |
| Magplane_Technology,_Inc_ Intracity transportation concept using individual passive vehicles, levitated above a magway trough of semi-circular cross section. |
| Munich,_Bavaria_Maglev_Project Details about Germany's first commercial maglev project. Includes maps and pictures. |
| ODU\'s_Maglev_Train The $14 million project is a partnership involving Old Dominion University, American Maglev, Dominion Virginia Power, Lockheed Martin and other companies. |
| The_Pennsylvania_Project_-_High_Speed_Maglev Provides information on the Pennsylvania maglev transportation project |
| Web_Quest_Exploring_Magnetic_Levitation_Technology Teacher's resources on teaching maglev, including tasks and evaluations for students |
| Wikipedia__Magletic_Levitation Overview of the technologies behind maglev |
| World_Maglev_Systems Maglev system uses permanent magnets for levitation and transportation. |
| Classification_of_Psilotophyta Main entry in Systema Naturae 2000. |
| Division_Psilotophyta Description with links to images of Psilotum nudum and Tmesipteris tannensis. |
| Fork_Ferns Illustrated introduction to the five species of Psilotaceae found in New Zealand. |
| Introduction_to_the_Psilotales Includes descriptions of morphology and life history. |
| Phylum_Psilophyta Includes phylum description, and links to images of members of the Psilotaceae. |
| Psilophyta Profusely illustrated description focussed on morphology and evolution. |
| Psilotaceae Division/family description and thumbnail links to images of two species of Psilotum from Hawaii. |
| Psilotaceae Description and illustration of anatomical structure of species in Hawaii |
| KSU_Soil_Microbial_Ecology_Laboratory Research group at Kansas State University, USA. |
| Laboratory_of_Soil_Ecology_and_Microbiology Research projects and publications (University of Rhode Island, USA). |
| Soil_and_Ecosystem_Ecology Research projects and publications (Lancaster University, UK). |
| Soil_Ecology_and_Restoration_Group Primary focus is on soils and below-ground processes in arid and semiarid ecosystems with emphasis on microbial ecology and plant-microorganism relationships (San Diego State University, University of |
| Soil_Organisms_and_The_Nitrogen_Cycle Educational site explaining the role of soil organisms and the nitrogen cycle. |
| ChemicalElements_com__Iron Basic information, atomic structure, and isotopes. |
| EnvironmentalChemistry_com__Iron Atomic structure, chemical and physical properties, and table of nuclides. |
| Iron Data tables and historic information. |
| It\'s_Elemental__Iron Basic physical and historical information. |
| LANL__Iron History, sources, uses, and properties. |
| Lenntech__Iron Physical data, chemical properties, health and environmental effects. |
| USGS_Minerals_Information__Iron Statistics and information on the worldwide supply, demand, and flow of the element (PDF format). |
| Visual_Elements__Iron Image, general and physical information, source, uses, key isotopes, and ionisation energies. |
