|  | G |
SECTION G — PHYSICS

INSTRUMENTS

|  | G01 |
MEASURING (counting Fulltext... Hierarchy... Expanded...G06M); TESTING

|  | G01V |
GEOPHYSICS; DETECTING HIDDEN MASSES (measuring chemical or physical properties of earth materials Fulltext... Hierarchy... Expanded...G01N; measuring electric or magnetic quantities in general, other than direction or magnitude of the earth's field Fulltext... Hierarchy... Expanded...G01R; involving both the emission and reception of radio waves, other electromagnetic waves, or sonic waves Fulltext... Hierarchy... Expanded...G01S)

|  | G01V |
Note(s) Attention is drawn to the notes immediately following the class title (Fulltext... Hierarchy... Expanded...G01). Within this sub-class, the word "prospecting" includes the detection of masses hidden in the earth or in other places.

|  | G01V 1/00 |
Seismology; Seismic prospecting; Acoustic prospecting

|  | G01V 1/02 |
· | Generating seismic energy (blasting in general Fulltext... Hierarchy... Expanded...F42; nuclear explosives Fulltext... Hierarchy... Expanded...G21J)

|  | G01V 1/04 |
· · | Details

|  | G01V 1/06 |
· · · | Ignition devices

|  | G01V 1/08 |
· · · · | involving time-delay devices

|  | G01V 1/10 |
· · | by using single explosive charge

|  | G01V 1/12 |
· · | by using more than one explosive charge

|  | G01V 1/13 |
· · · | Arrangements or disposition of charges to produce a desired pattern in space or time

|  | G01V 1/14 |
· · | by repeated or continuous agitation of the ground, without the use of explosive charges

|  | G01V 1/16 |
· | Receiving elements for seismic signals (electromechanical transducers Fulltext... Hierarchy... Expanded...H04R); Arrangements or adaptations of receiving elements

|  | G01V 1/18 |
· · | Seismographs

|  | G01V 1/20 |
· · | Arrangements of receiving elements, e.g. geophone pattern

|  | G01V 1/22 |
· | Transmitting seismic signals to recording or processing apparatus (signal-transmitting systems in general Fulltext... Hierarchy... Expanded...G08C; electric transmission systems Fulltext... Hierarchy... Expanded...H04B)

|  | G01V 1/24 |
· | Recording seismic data (transforming one recording into another Fulltext... Hierarchy... Expanded...G01V 1/32; recording measured values in general Fulltext... Hierarchy... Expanded...G01D)

|  | G01V 1/26 |
· · | Reference-signal-transmitting devices, e.g. indicating moment of firing of shot

|  | G01V 1/28 |
· | Processing seismic data, e.g. analysis, for interpretation, for correction (computing in general Fulltext... Hierarchy... Expanded...G06)

|  | G01V 1/30 |
· · | Analysis

|  | G01V 1/32 |
· · | Transforming one recording into another

|  | G01V 1/34 |
· · | Displaying seismic recordings

|  | G01V 1/36 |
· · | Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy

|  | G01V 1/38 |
· | specially adapted for water-covered areas (Fulltext... Hierarchy... Expanded...G01V 1/28 takes precedence)

|  | G01V 1/40 |
· | specially adapted for well-logging

|  | G01V 3/00 |
Electric or magnetic prospecting; Measuring the magnetic field of the earth, e.g. declination, deviation (for navigation, for surveying Fulltext... Hierarchy... Expanded...G01C 17/00, Fulltext... Hierarchy... Expanded...G01C 19/00, Fulltext... Hierarchy... Expanded...G01C 21/00)

|  | G01V 3/02 |
· | operating with propagation of electric current

|  | G01V 3/04 |
· · | using direct current

|  | G01V 3/06 |
· · | using alternating current

|  | G01V 3/08 |
· | operating with magnetic or electric fields produced or modified either by the object or by the detecting device (with electromagnetic waves Fulltext... Hierarchy... Expanded...G01V 3/12)

|  | G01V 3/10 |
· · | using induction coils

|  | G01V 3/12 |
· | operating with electromagnetic waves

|  | G01V 3/14 |
· | operating with electron or nuclear magnetic resonance

|  | G01V 3/16 |
· | specially adapted for use from aircraft

|  | G01V 3/18 |
· | specially adapted for well-logging

|  | G01V 5/00 |
Prospecting by the use of nuclear radiation, e.g. of natural or induced radioactivity (determining the properties of materials Fulltext... Hierarchy... Expanded...G01N; measuring nuclear radiation Fulltext... Hierarchy... Expanded...G01T)

|  | G01V 7/00 |
Measuring gravitational field of the earth; Gravimetric prospecting

|  | G01V 7/02 |
· | Details

|  | G01V 7/04 |
· · | Electric, photoelectric, or magnetic indicating or recording means

|  | G01V 7/06 |
· · | Analysis or interpretation of gravimetric records

|  | G01V 7/08 |
· | using balances (balances in general Fulltext... Hierarchy... Expanded...G01G)

|  | G01V 7/10 |
· · | using torsion balances, e.g. Eötvös balance

|  | G01V 7/12 |
· | using pendulums

|  | G01V 7/14 |
· | using free-fall time

|  | G01V 7/16 |
· | specially adapted for use on moving platforms, e.g. ship, aircraft

|  | G01V 9/00 |
Prospecting by methods not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 1/00-G01V 7/00

|  | G01V 9/02 |
· | Determining existence or flow of underground water

|  | G01V 11/00 |
Prospecting by methods combining techniques covered by two or more of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G01V 1/00-G01V 9/00

|  | G01V 13/00 |
Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by the preceding groups