Plunger, glass

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Ingenium, 1996.0497.003
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OBJECT TYPE: evaporation pan
DATE: 1930
ARTIFACT NUMBER: 1996.0497.003

MANUFACTURER: P.N.F.I.
MODEL: HURST INTEGRATING ATMOMETER
LOCATION: Chalk River, Ontario, Canada

More Information

General Information

Serial #: N/A
Part Number: 3
Total Parts: 13
AKA: N/A
Patents: N/A
General Description: GLASS TUBE CONTAINING LEAD SHOT, COTTON PADDING, PAPER SCALE

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length: N/A
Width: N/A
Height: 28.5 cm
Thickness: N/A
Weight: N/A
Diameter: 3.0 cm
Volume: N/A

Lexicon

Group: Forestry
Category: Fire fighting
Sub-Category: N/A

Manufacturer

AKA: PNFI
Country: Canada
State/Province: Ontario
City: Chalk River

Context

Country: Canada
State/Province: Ontario
Period: 1930'S +
Canada: CANADIAN DESIGNED EVAPORATION MEASURING DEVICE MADE FOR CANADIAN FORESTRY SERVICE./ FROM COLLECTION OF FORESTRY & FIRE-FIGHTING EQUIPMENT USED BY & ACQUIRED FROM PNFI, CANADIAN GOV'T FORESTRY RESEARCH ESTABLISHMENT WHICH OPERATED FROM 1918-1995. PNFI STUDIED SPECIES GROWTH & FOREST MANAGEMENT, PARTICULARLY FIRE PREVENTION & SUPPRESSION.
Function: DEVICE USED TO MEASURE RATE AT WHICH LIQUID EVAPORATES INTO AIR. THIS TYPE CONSISTED OF ONE SMALL PAN CONTAINING SULPHURIC ACID & ONE CONTAINING GLYCERINE; MEASUREMENTS OF EVAPORATION WERE TAKEN FROM EACH BY MEANS OF CALIBRATED PLUNGER. THEY WERE USED BY FORESTRY SERVICE IN DETERMINING RISK OF FOREST FIRE.
Technical: DESIGNED BY DR. DONALD HURST OF NRC ATOMIC ENERGY PROJECT AT CHALK RIVER, ON. THESE WERE SIMPLE MEANS OF MEASURING FOREST FIRE DANGER; IT WAS THOUGHT THAT THEY WOULD INTEGRATE EFFECTS OF WIND, HUMIDITY & TEMPERATURE. RAINFALL & EVAPORATION MEASUREMENTS WERE MAIN COMPONENTS OF FIRE DANGER RATING.
Area Notes: Unknown

Details

Markings: BLACK SCALE MARKINGS ON PAPER SCALE FOR 0 TO 90
Missing: N/A
Finish: COLOURLESS TRANSPARENT GLASS, GREY SHOT, WHITE COTTON & PAPER (DISCOLOURED IN PLACES)
Decoration: N/A

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If you choose to share our information about this collection object, please cite:

P.N.F.I., Plunger, glass, circa 1930, Artifact no. 1996.0497, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1996.0497.003/

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