Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

6

Ou

S/O

Brevets

S/O

Description générale

.1-.6 BRONZE PENDULUMS, GILDED AND FITTED WITH AGATE FLATS AND ALUMINIZED GLASS MIRRORS. INNER STORAGE CASE IS ALL METAL, INCLUDING COPPER & ALUMINUM COMPONENTS. OUTER CASE ALSO METAL WITH NYLON COVERED FOAM PADS LINING SIDES & LID

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

42,0 cm

Largeur

40,0 cm

Hauteur

49,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Géophysique

Sous-catégorie

S/O

Fabricant

Ou

Saegmuller

Pays

United States of America

État/province

District of Columbia

Ville

Washington

Contexte

Pays

Worldwide

État/province

Inconnu

Période

THIS TYPE OF PENDULUM IN USE SINCE C.1890.THESE PENDULUMS USED BY GSC UNTIL MID 1970S

Canada

PENDULUMS.1-.3 WERE OBTAINED C.1902 BY THE DOMINION OBSERVATORY, FOR USE WITH THE MENDENHALL APPARATUS ORDER & USED BY DR. OTTO KLOTZ (SEE 872133). THIS INSTRUMENT WAS USED TO MAKE THE FIRST GRAVITY MEASUREMENTS IN CANADA. PENDULUMS.1-.6 WERE USED WITH VARIOUS FORMS OF THE CANADIAN PENDULUM APPARATUS UNTIL MID-1970S.

Fonction

USED TO OBTAIN RELATIVE GRAVITY MEASUREMENTS

Technique

PENDULUMS HAVE BEEN USED FOR RELATIVE GRAVITY MEASUREMENTS SINCE THE EARLY 19TH C. SPRING-TYPE GRAVIMETERS LARGELY REPLACED PENDULUMS FOR GEOPHYSICAL SURVEYS BY C.1950: PENDULUMS CONTINUED TO BE USED FOR LONG RANGE GRAVITY TIES, WHERE THE LARGE CHANGE IN GRAVITY COULD NOT BE RELIABLY MEASURED BY SPRING-TYPE GRAVIMETERS.

Notes sur la région

Inconnu

Détails

Marques

.1-.3 PENDULUMS NUMBERED '1' TO '3'- NUMBER STAMPED ON TOP OF EACH PENDULUM/ EQUIPMENT INVENTORY DECAL APPLIED TO ONE SECTION OF LID READS: 'GR 63202/ DO NOT REMOVE THIS TAG'. PENDULUM STORAGE COMPARTMENTS NUMBERED CRUDELY ON 2-PART LID '1' TO '6'. OUTER CASE BEARS MFR'S PLATE READING 'PYLON ELECTRONIC DEVELOPMENT/ company, ltd./ MONTREAL CANADA'. ORANGE GREASE PENCIL DIAGRAM OF BISECTED SPHERE & MEASUREMENTS '8 1/8' APPEAR ON ONE PANEL OF CASE/ EMR SHIPPING LABEL, 'HANDLE/ WITH CARE/ PLEASE' ALSO ON CASE

Manque

PENDULUMS ARE COMPLETE IN THEMSELVES. THEY WERE USED WITH KNIFE EDGES, AND SWUNG IN BOTH THE MENDENHALL & CANADIAN BRONZE PENDULUM APPARATUS

Fini

.1-.6 PENDULUMS ARE GILDED TO PRODUCE OVERALL BRIGHT GOLD FINISH. EACH FITTED WITH TWO BRIGHT ALUMINIZEDGLASS MIRRORS & OPAQUE AGATE FLATS. BRIGHT ALUMINUM INNER STORAGE CASE. OUTER CASE PAINTED DULL SILVER; FOAM PADDING INSIDE CASE COVERED BY BLUE NYLON FABRIC.

Décoration

S/O