CR Magnetics
Manufacture of Current, Voltage, Power & Frequency monitoring products for Alternating & Direct Current including Current Transformers, Transducers, relays, indicators, hall devices.
http://www.crmagnetics.com/

PT Guna Era Manufaktura
We are an Indonesian company which deals in electrical & mechanical field. Our company was established in 1962. We produce electrical panel components such as panel meters ( A, V, Watt, cos phi, fre
http://gunaera.diytrade.com/

Sensor Technology Limited
Sensor Technology Ltd. offers piezoelectric materials, acoustic transducers, hydrophones, actuators, instrumentation and systems for applications such as marine navigation, geophysical surveys, underwater explorations, broadband acoustic transmission and laboratory research.
http://sensortech.ca/

Electrodynamic Explanation of Ball Lightning
Ball lightning is considered as self-closed alternating displacement current, which produces air luminescence (electroluminescence).
http://www.comail.ru/~science/fireball/fe.htm

Ultrasound Field Simulation
Ultrasim
http://www.ifi.uio.no/~ultrasim/

Cronartiaceae
Forestry Images: Forest Health, Natural Resources and Silviculture Photos with pictures of insects, diseases, trees, plants, weeds, ecosystems, fire, ecology, other pests and wildlife.
http://www.forestryimages.org/browse/family.cfm?id=150

Alternating Sign Matrices
A conference in honour of David P. Robbins. IDA Center for Communications Research, Princeton, NJ, USA; 29--30 June 2003.
http://www.haverford.edu/math/lbutler/RobbinsConf.html

Cleareview Healthcare Products
Manufacturer of anti-bedsore alternating pressure pumps and pads, wheelchair cushion, gel mattresses, and gel cushions.
http://www.bedsorefree.com

Gymnosporangium juniperi-virginianae
An illustrated article by Tom Volk on this rust fungus which is parasitic on the eastern red cedar and the apple tree, alternating between these two hosts.
http://botit.botany.wisc.edu/toms_fungi/may99.html

Transducer Beam Characteristics
Bioacoustics Research lab
http://www.brl.uiuc.edu/Projects/Beam.htm