Archives for the ‘scientific’ Category

Geophone

The Geophone is built and undergoing some last tests at Tactical Space Lab. The spectrograph readouts are looking beautiful. Josh Harle has done an amazing job on what he has called a James Bond villain kit.

geophone underway

Geophone construction is underway by the wonderful Josh Harles of Tactical Space Lab A geophone is a device that converts ground movement (velocity) into voltage. This one will be able to detect low frequencies, around 10Hz and convert that to data.  

Photos, Hallet Cove, 22 August 2020

Bone Sound Conductor

Again from researcher extraordinaire Jasmine Hirst: Sound through bones rather than ears – devices for joggers mostly. Live Mint – Music through your bones

Geophones & Seismometers

Lovely geologists David Fredricks & Peter Bell have suggested: Geophone Geophone from SparkFun They both recommend having it very very tightly into the rock – epoxied in as well its spikes driven in. Seismometers “… one researcher’s noise is another’s signal…” Seismometers pick up noise signals between & under actual events. A longstanding regular noise […]

Martine Bertereau

Martine Bertereau, Baroness de Beausoleil, 1600-1642 – an early mining engineer and mineralologist, was said to find mineral ore deposits by a range of techniques including dowsing. Her writings describe the use of 7 divining or dowsing rods of different metals and a minerological compass to determine the presence of different ores.

Resonance Frequencies

“…the natural frequency of the rock increases with the change of vibration mode. For the same kind of rock, the resonance frequency is inversely proportional to mass, while for the different kinds of rocks, the mechanical parameters, such as density, elastic modulus, and Poisson’s ratio, determine the resonance frequency of the rock together. Besides, the […]