Renseignements généraux

Nº de série

11

Nº de partie

1

Nombre total de parties

9

Ou

S/O

Brevets

S/O

Description générale

GLASS, METAL AND SYNTHETIC CONSTRUCTION THROUGHOUT.

Dimensions

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

Longueur

163,0 cm

Largeur

65,0 cm

Hauteur

193,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Atomique et nucléaire

Sous-catégorie

S/O

Fabricant

Ou

Varian

Pays

Inconnu

État/province

Inconnu

Ville

Inconnu

Contexte

Pays

Canada

État/province

Colombie-Britannique

Période

THIS MASER USED C. 1968 TO 1992. WAS OPERATIONAL IN 1993/94.

Canada

MASER WAS KEY ELEMENT IN PERMITTING NRC RADIO ASTRONOMERS TO BECOME THE FIRST IN THE WORLD TO CREATE A LONG BASELINE INTERFEROMETER (LBI) NOT PHYSICALLY CONNECTED BY WIRES. THE DEVELOPMENT TEAM, CONSISTING OF NRC AND CANADIAN UNIVERSITY SCIENTISTS, WON THE RUMFORD PREMIUM FOR THIS ACHIEVEMENT IN 1972. (REF. 1)

Fonction

TO MEASURE TIME WITH THE HIGHEST POSSIBLE DEGREE OF ACCURACY, AND TO GENERATE A VERY PRECISE TIME FREQUENCY.

Technique

ATOMIC HYDROGEN MASER PROVIDES HIGHEST POSSIBLE STABILITY OF TIME MEASUREMENT OVER PERIODS OF SEVERAL HOURS. THIS EXAMPLE WAS STABLE TO 1 PART IN 10(13)-10(14). IT'S SIGNALS WERE SYNCHRONIZED TO PERMIT COMBINING THE INCOMING RADIO DATA FROM ASTRONOMICAL OBJECTS SUCH AS QUASARS, ACTIVE RADIO GALAXIES FROM TWO OR MORE VERY DISTANT RADIO TELESCOPE ANTENNAS, SUCH AS THOSE OF THE LBI. "The H10 was developed by Norman Ramsey, David Kleppner and Mark Goldenberg of Cambridge, MA. The H10 had an accuracy of 6 x 10^-45 seconds which equates to +/- 6 pico seconds per hour." [Ref. 5]

Notes sur la région

Inconnu

Détails

Marques

All controls, etc. labelled. Canadian flag decal appears in upper left of front. Plate on front reads "hp H-10A ATOMIC HYDROGEN MASER/ HEWLETT-PACKARD SERIAL NO. 11". Decal on right reads "HERZBERG INSTITUTE/ OF ASTROPHYSICS/ HIA 0785/ ASTRONOMY SECTION". Orange paper sign fixed to unit rear reads "DANGER/ HAZARDOUS AREA/ HI- VOLTAGE DC/ HYDROGEN GAS/ IN CASE OF/ EMERGENCY CALL/ J.R. FLETCHER/ TEL.:991-5850/ TEL.:824-7241". Many individual components, bear model & mfr markings, etc. Masking tape label on PT pull-cart reads "FOR CANADIAN MASER/ DO NOT USE OR DISCARD/ [CON]TACT TONY BATTILAWA/ OR PAUL BURGESS".

Manque

UNKNOWN.

Fini

MOST COMPONENTS HAVE MEDIUM TO DARK GREY ENAMEL FINISH ON EXTERNAL CASINGS./ .1 MASER SUPPORTED ON YELLOW PULL-CART.

Décoration

S/O