Synopsis of first vinyl recording cutter and cartridge for playback.

Jose P. Panakkal, Advanced Fuel Fabrication Facility, Bhabha Atomic Research Centre, Tarapur, India 401 502 (ndt.net)

Professional Audio Products, Acoustic Design, Studio Installation, Sound Systems, Equipment Service, Custom Electronic Devices, Used Gear, Electronic parts and much more...

Manufacture automated and manually operated ultrasound and imaging equipment and provider of scanning services for NDE and NDT applications.

Fully illustrated tutorial about magnetic recording, with related links.

Information on valve, valve amp and vintage radio.

Solutions using computer modelling to determine the vibration modes and impact on a building, equipment or mechanical component when exposed to a vibration source.

Provide condition monitoring services and represent manufacturers of force, strain, pressure, vibration, displacement and ultrasonic leak detection sensors and instruments. Includes tech tips and theory. Australia .

Established the first industrial production of GaPO4 (Gallium Phosphate) and now makes a new high performance piezoelectric crystal.

Provides background on how sonoluminescence can be used in chemistry.

The family company employs a staff of 100, and is specialized in development and manufacture of ultrasound equipment for applications in industry, trade, laboratory and medicine. The latest products developed are employed in sonochemistry and process acceleration.

Manufacture ultrasonic inline analyzers, sensors and probes for analysis of the concentration, density or composition of liquids, emulsions and slurries.

A company with 25 years in the music industry, committed to Christian music recordings. Located in Colorado, USA.

Hand built to order, an assembled unit that is portable, small, lightweight and is powered by a 9 volt battery.

British manufacturer of ultrasonic cleaning baths for use in the medical, surgical, optical, dental, veterinary, laboratory and electronic fields. Distribution world-wide.