| Partition_Enterprises_Pty_Ltd Manufacturer of density tracers. Density tracers are filled plastic particles which are used to determine partitioning characteristics of density separators and other units. |
| PhysicsWeb_-_Business_Directory Directory of manufacturers and suppliers of physics-related products. |
| Quantum_Design,_Inc_ Provides automated materials characterization instrumentation - SQUID magnetometry, heat capacity, cryogenics, thermal conductivity, resistivity, helium 3, superconducting magnetics, susceptometry, ph |
| Rare-Earth_Magnets Distributor and retailer of rare-earth (neodymium-iron-boron) magnets, ferrofluid, bih, magnetic viewing film, and other related products. |
| The_Rembar_Company Provides refractory metals and services to fabricate refractory metals. |
| Scienglass Supplier of glass and glass/metal instruments and accessories for scientific applications. |
| S-DH_GmbH Developer of super-mirrors, neutron guide systems (ballistic, funnel) and several mechanical and optical devices like ELREBO (ElementReplacingBox). |
| Semetrol Producer of semiconductor characterization and analysis systems. |
| Silicon_Sensing_Systems_Japan,_Ltd Provides a vibrating type gyroscope that uses micro-machined ring resonator for accurate and shock-resistent reading. |
| SMI_Lab_Ltd_ Developer and manufacturer of photonic single crystalline materials and instruments. |
| Solar_Energy_Photovoltaics_Tutorial_Package Provides an interactive tutorial package comprising of a comprehensive tutorial and laboratory grade photovoltaic module for "hands on" experiments and calculations. |
| SPECS_GmbH Manufacturer of surface analysis components and systems. |
| Spectra_Gases Manufacturer of rare, excimer laser, stable isotopic and environmental gases and gas mixtures. |
| Surface_Concept_GmbH Producer of delay line detectors. Provides products and services for electron detection, electron optics and ultra-high vacuum compatible sensors for surface analysis. |
| SVT_Associates_-_Complete_MBE Manufacturer of Ultra High Vacuum (UHV) and Molecular Beam Epitaxy (MBE) equipment. Also produces III-V epitaxial materials and devices, in-situ monitoring tools, and system deposition components. |
| Sypris_Test_&_Measurement Provider of on-site and mobile calibration services, test and evaluation services and electronic products under the F.W. Bell name including magnetic measurement instruments, current sensors and hall |
| Tantec_USA Manufacturer of surface treatment and analysis equipment and static electricity control equipment. |
| Tectra_Plasma_Sources Provides the Tectra Plasma Source, a multi-purpose source producing either atoms or ions and finds uses in a range of HV and UHV applications. |
| Teledyne_Hastings_Instruments Manufacturer of vacuum and flow instruments for the measurement and control of vacuum and gas flows. |
| UHV_Design Manufacturer or vacuum components for molecular beam epitaxy (MBE), UHV sputtering, vacuum thin films and other UHV vacuum deposition components. |
| Vacutec Produces hemispherical energy analysers, electron, X ray, ion sources, and sample transfer. Includes list and description of products. |
| Vacuum_Controllers,_From_Hastings_Instruments Hastings Instruments manufactures a complete line of Vacuum Instruments including Vacuum Controllers, for the precise measurement and control of vacuum and gas flows. |
| Vatell_Corporation Produces a line of HFM heat flux microsensors and circular foil heat flux gages. |
| VME_for_Physics_and_Industrie Provides process control, supervisory data acquisition systems and VME scalers and counters. |
| Vorg_Electronics Manufacturer of electronic transformers for halogen lamps, photomultiplier tube bases, cables, electronic transformers, PMT bases, PMT Arrays, transformers, and custom built electronics |
| Voss_Scientific Provides data acquisition and analysis, PC-based satellite telemetry, high-power microwave (HPM) sources, and computational electromagnetic products. |
| Walker_LDJ_Scientific,_Inc_ Manufacturer of magnetic measurement and analysis equipment. In addition, the company manufactures power supplies, laboratory electromagnets, and helmholtz coils. |
| WITec_GmbH Manufacturer of equipment for scientific and industrial applications focused on new solutions for Optical and Scanning Probe Microscopy. |
| X-ray_3-dimensional_Non-destructive_Microscopy Developer and producer of microtomography (Micro-CT) system for non-destructive 3-dimensional microscopy inside opaque objects. |
| X-TRONIX_Scientific_and_Industrial_Technologies Provides equipment for vacuum techniques, including consumables, thin films and surface science, gas flow control, helium cryogenics, and particle physics. |
| Australian_Permaculture_Information_and_Design_Service Information on organic and permaculture agriculture. |
| Central_Rocky_Mountain_Permaculture_Institute,_Basalt,_Colorado Permaculture training in the Colorado Rockies or the Bahamas. Also consulting. |
| David_Holmgren David Holmgren was the research student and co-originator with Bill Mollison, his research supervisor, of the permaculture concept. |
| EcoLandTech Extensive web directory of permaculture and related topics. |
| Eugene_Permaculture_Guild Organization seeks to educate members and the community about the principles of sustainable living. Features photos, events and newsletter. |
| The_Food_Forest A 40 acre permaculture demonstration, and production property at Gawler, South Australia. Offers consulting services, learning courses, information, and tours. |
| Four_Frogs_Permaculture_Design Offers sustainable design solutions for your balcony or backyard. |
| Green_Mountain_Permaculture Teaches and practices permaculture design on the shores of Lake Champlain in northern Vermont. Site also offers a photo galley of projects and articles. |
| Instituto_de_Permacultura_Cerrado-Pantanal Good collection of permaculture information resources, with special focus on projects, courses, people, and newsletters in Brazil. (English, Spanish, and Portuguese languages) |
| International_Institute_for_Ecological_Agriculture Information, reading list, and links on permaculture and community-supported agriculture. |
| Introduction_to_Permaculture__Concepts_and_Resources Appropriate Technology Transfer for Rural Areas (ATTRA) guide to Permaculture. |
| Klein_Karoo_Sustainable_Drylands_Permaculture_Project Klein Karoo sustainable drylands permaculture project is a permaculture eco-village in South Africa |
| Kootenay_Permaculture_Institute Information about the permaculture research and education undertaken by the institute based in British Columbia, Canada. |
| La\'akea_Permaculture_Gardens/Permaculture_in_Hawaii Offers month-long courses in permaculture design and deep ecology. |
| Naturewise_Permaculture_and_Forest_Gardens About programs in London, UK, promoting permaculture and forest gardens, including courses on permaculture. |
| Permaculture__From_Down_Under Introduction to permaculture in hot climates. |
| The_Permaculture_Activist North American permaculture periodical, providing a current listing of upcoming permaculture design courses, and offering articles on permaculture design, edible landscaping, bioregionalism, aquacultu |
| Permaculture_in_New_Zealand Information about the world of permaculture in New Zealand. Site also has event listings and a question and answer forum. |
| Permaculture_International_Ltd Publisher Permaculture International Journal, now a networking organization connecting permaculture groups and activists as well as offering an electronic newsletter. |
| Permaculture__Method_of_Agriculture,_Way_of_Life Article describes the permaculture philosophy, outlines its history, and discusses prospects for its future. From Catalyst, a student magazine at Brown University. |
| Permaculture_Portal Provides users with a helpful gateway to permaculture courses, events, services, and resources. The Portal is also the online home for the Bullocks' permaculture site in Orcas Island, Washington. |
| The_Permaculture_Project Promotes true self-reliance for all through personal and customized consultation, research, design, implementation, workshops and seminars. |
| Permaculture_Research A collection of basic information on a wide range of topics connected with permaculture and sustainable growing. |
| Permaculture_Research_Institute About permaculture and PRI's hands-on permaculture courses in ecological design, environmental restoration, appropriate technology and sustainable agriculture. New South Wales, Australia. |
| Permaculture_The_Earth Offers information about sustainable design and interactive forums for the discussion of topics related to permaculture. |
| Permaculture_Visions_International Worldwide Permaculture School and support network with students in over 20 countries. Collection of writings and ideas about permaculture. Offers permaculture courses by distance learning. |
| Permanent_Publications Subscription information for Permaculture Magazine and a catalogue of available books, videos, and other resources focused on permaculture in the UK. |
| Pierre\'s_Permaculture_Page Information on permaculture (including its ethics and principles), where to take permaculture courses, and other links. |
| Robert_Hart\'s_Forest_Garden A small celebration of Robert's forest garden at Wenlock Edge, described as 'possibly the UK's only fully developed Permaculture Project.' |
| SEED_International Environmental planning and design for permaculture and ecologically sound village designs. Australia. |
| Sustainability_as_Seen_from_a_Vegetable_Garden The site is an honours thesis completed in 1999. It looks at urban sustainability as highlighted by community gardens in Sydney, Australia. |
| UK_Permaculture_Association Provides information about the association, courses, UK links and general permaculture information. |
| Weeds_or_Wild_Nature? 1997 article by David Holmgren, one of the co-founders of the permaculture movement, discusses the evolution of ideas related to environmentally progressive responses to weeds and pests, with particul |
| Academy_of_Alchemy_(Chemistry) Self-paced and self-learning distance chemistry education. There is a cost for a 'hypertextbook' and a different cost for online tutoring, if requested. |
| ACS_Education ACS education programs provide teachers from pre-kindergarten through college with a range of instructional materials to enhance their teaching. |
| Activities_,_Games_and_Quizzes_in_Chemistry Learn facts about the periodic table through quiz activities and games. Identify the chemical symbol given the element name, and the element name given the chemical symbol. |
