Exhibit illustrating quartz technique.

Exhibit illustrating quartz technique.

Details

Category:
Time Measurement
Object Number:
1947-311
type:
quartz clock mechanism
credit:
(1) General Post Office Research Station, Dollis Hill; (2) BT Museum

Parts

Cluster of quartz crystals

Cluster of quartz crystals

Cluster of quartz crystals.

Object Number:
1947-311 Pt1
type:
quartz crystal
Quartz crystal, water-worn

Quartz crystal, water-worn

Water-worn quartz crystal taken from riverbed.

Object Number:
1947-311 Pt2
type:
quartz crystal
'Twinned' quartz crystal

'Twinned' quartz crystal

'Twinned' quartz crystal: two distinct but connected crystal regions.

Object Number:
1947-311 Pt3
type:
quartz crystal
Quartz crystal, with X, Y and Z axes labelled

Quartz crystal, with X, Y and Z axes labelled

Quartz crystal from Brazil with characteristic x, y and z axes labelled.

Object Number:
1947-311 Pt4
type:
quartz crystal
Quartz crystal, containing 'ghost'

Quartz crystal, containing 'ghost'

Quartz crystal containing 'ghost' (where one crystal region has formed inside another).

Object Number:
1947-311 Pt5
type:
quartz crystal
Quartz crystal, slice

Quartz crystal, slice

Slice of quartz crystal. Part of a series of 8 objects showing how crystals are cut for use in quartz oscillators.

Object Number:
1947-311 Pt6
type:
quartz crystal
Model, demonstrating the GT-cut quartz plate orientation via the x, y and z axes

Model, demonstrating the GT-cut quartz plate orientation via the x, y and z axes

Model demonstrating the orientation of a GT-cut quartz plate with respect to the x, y and z axes. Part of a series of 8 objects showing how a crystal is cut for use in a quartz oscillator.

Object Number:
1947-311 Pt7
type:
quartz crystal plate
Quartz crystal oscillator unit

Quartz crystal oscillator unit

Quartz crystal oscillator unit. Part of a series of 8 objects demonstrating how a crystal is cut for use in a quartz oscillator.

Object Number:
1947-311 Pt8
type:
quartz crystal unit
GT-cut quartz crystal plate

GT-cut quartz crystal plate

GT-cut quartz crystal plate. Has angles of the plate's orientation to the original crystal's axes written on it. Part of a series of 8 objects demonstrating how a crystal is cut for use in a quartz oscillator.

Object Number:
1947-311 Pt9
type:
gt-cut quartz crystal plate
Quartz crystal, with possible GT-cut plate position indicated

Quartz crystal, with possible GT-cut plate position indicated

Quartz crystal with the possible position of a GT-cut plate indicated. Part of a series of 8 objects demonstrating how a cyrstal is cut for use in a quartz oscillator.

Object Number:
1947-311 Pt10
type:
quartz crystal
Parts of holder for a GT-cut quartz crystal plate

Parts of holder for a GT-cut quartz crystal plate

Parts of holder for a GT-cut quartz crystal plate. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt12
type:
holder for quartz crystal plate
Aluminium casing, for quartz oscillator mechanism

Aluminium casing, for quartz oscillator mechanism

Metal casing for quartz oscillator mechanism. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt14
type:
quartz oscillator casing
Silver coated GT-cut quartz plate, with nodal region positioned wires

Silver coated GT-cut quartz plate, with nodal region positioned wires

Silver coated GT-cut quartz plate with wires positioned in nodal regions. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt16
type:
gt-cut quartz plate
GT-cut quartz plate, mounted in glass envelope, inside jar

GT-cut quartz plate, mounted in glass envelope, inside jar

GT-cut quartz plate mounted in glass envelope. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt17
type:
gt-cut quartz plate
Essen-type z-cut quartz ring, plated and notched

Essen-type z-cut quartz ring, plated and notched

Essen-type z-cut quartz ring, plated, notched and provided with silver connecting wires. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt18
type:
z-cut quartz ring
Essen-type z-cut quartz ring mount with six supporting threads

Essen-type z-cut quartz ring mount with six supporting threads

Essen-type z-cut quartz ring mount with six supporting threads. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt19
type:
quartz z-ring mechanism
Essen-type z-cut quartz ring, mounted in mechanism

Essen-type z-cut quartz ring, mounted in mechanism

Essen-type z-cut quartz ring mounted in mechanism. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt20
type:
z-cut quartz ring
Essen-type z-cut ring quartz oscillator sealed in casing

Essen-type z-cut ring quartz oscillator sealed in casing

Essen-type z-cut ring quartz oscillator sealed in casing. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt21
type:
quartz ring oscillator
Essen-type z-cut ring quartz oscillator with metal casing loose

Essen-type z-cut ring quartz oscillator with metal casing loose

Essen-type z-cut ring quartz oscillator with metal casing loose. Part of a series of 11 objects demonstrating how a crystal plate or ring is mounted for use in a quartz oscillator.

Object Number:
1947-311 Pt22
type:
quartz ring oscillator