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A SPIRAL THERMOMETER

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 2897 Number in the current inventory 86 INSTRUMENT: A SPIRAL THERMOMETER Age: beginning of the twentieth century Creator: Abraham-Louis Breguet (1747-1823) (A famous watchmaker from Paris) Materials: wood, glass, brass, velvet porcelain, iron, zinc, silver gold, platinum Size: (205, Ø 165) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 2897 on 10th March 1924 priced at 480 liras. Description: On a wooden circular base which rests on three wooden legs, two brass clamps are screwed; they hold up a curved scale, graduated from -10°C to 40°C, with sensitivity of one degree with a curved rod which supports with a clamp a metal spiral. At the lower end this spiral...

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A MODEL OF STEAM ENGINE

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 2910 Number in the current inventory 102 INSTRUMENT: A MODEL OF STEAM ENGINE Age: beginning of the twentieth century Creator: / Materials: Brass, wood, iron, glass, copper, cast iron Size: (293 x 263 x 275) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 2910 on 10th March 1924, priced at 1,200 liras. On the base, instead, there was a label with the number “102” that is probably referred to another inventory register which has gone lost. Description: It is composed by an iron cylindrical boiler (Ø 85 mm, length 185 mm), which stands on a parallelepipedal combustion chamber opened on the front and with a chimney for the discharge of...

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AN ALCHOL BURNING PORTABLE STOVE

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 2914 Number in the current inventory 106 INSTRUMENT: AN ALCHOL BURNING PORTABLE STOVE AGE: beginning of the twentieth century Creator: / Materials: metal sheet, fabric, steel Size: (154, Ø60) mm State of conservation: Good Information: The older inventory register, found in the school, said that the instrument was inserted in the inventory with a wrong name “alcohol lamp” on10th March 1924 with the number 2914 priced at 50 liras. Description: The instrument consist of a cylindric container supported by a tripod. On its top there are welded a nozzle through which the alcohol is poured inside and a wick and three little rods with a ring which functions as a supporting base. Use: It is used to heat a substance in small...

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LAVOISIER’S CALORIMETER

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 3894 Number in the current inventory 1507  INSTRUMENT: LAVOISIER’S CALORIMETER Age: beginning of the twentieth century Creator:/ Materials: Brass, bakelite Dimensions: (530 x 280 x 280) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 3894 on 13th April 1928 priced at 2,250 liras. Description: The appliance consists of three cylindrical brass containers. The outer container is constituted by a cylinder ( Ø 21 ) that ends with a funnel closed by a tap, and communicates with the interior container, concentric to the first, of the same shape, but with a smaller diameter (13.5). The two containers are secured by three layers, each closed with a lid with a bakelite handle. Inside...

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AN APPLIANCE FOR LINEAR EXPANSION

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 3896 Number in the current inventory 1509 INSTRUMENT: AN APPLIANCE FOR LINEAR EXPANSION Age: beginning of the twentieth century Creator:/ Materials: Wood, brass, iron, copper, rope Size: (450 x 118 x 205) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 3896 on 21th June 1932 priced at 900 liras. Description: The instrument is composed by a wooden base with two brass supports on it. A standard copper bar can slide through them. A brass dial is screwed on one of the two supports with graduation from 0 °C to 90 °C, on which a pointer with a toothed base connected to a toothed lever can move around. A metal parallelepiped is...

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AN IRRADIATION MACHINE

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 2900 Number in the current inventory 89 INSTRUMENT: AN IRRADIATION MACHINE Age: beginning of the twentieth century Creator: / Materials: Glass, brass, mercury, string Size: (335, Ø 470) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 2900 on 10th  March 1924 priced at 270 liras. Description: The instrument consists of a support with a brass base and a rod, partly made of glass and partly of brass, bent in the upper part. Hanging on the support there is a mercury thermometer, whose lower part is inserted in a glass ampoule. The thermometer is graduated from -15 °C to 55 °C, with a sensitivity of 1 °C and it shows the...

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APPARATUS FOR THE CALIBRATION OF THE ZERO OF A THERMOMETER

Posted by on 06-04-2015 in Thermodynamics

Number in the past inventory 2901 Number in the current inventory 90 INSTRUMENT: APPARATUS FOR THE CALIBRATION OF THE ZERO OF A THERMOMETER Age: beginning of the twentieth century Creator:/ Materials: Brass Size: (200 x 155 x 135) mm State of conservation: Good Information: From the information contained in the old inventory register, found in the school, the instrument is said to have been added to the inventory with the number 2901 on 10th  March 1924 priced at 750 liras. Description: The instrument consists of a hollow cylinder made of brass (Ø 105) in which a funnel (height 90) of the same material is welded. The system is kept suspended by three thin supports welded to the cylinder. Use: The instrument is used to calibrate the zero of the thermometer. It is filled with melting crushed ice and the melted...

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HOPE APPARATUS

Posted by on 08-01-2015 in Thermodynamics

Number of past inventories: 2899 Number of current inventories: 88 TOOL: HOPE’S APPARATUS Age: beginning of the 1900’s Creator: / Materials: Brass, glass, rubber Size: (295, Ø? 130) mm State of conservation: Good Information: According to an old inventory register discovered at high school, the apparatus was added to the inventory on 10 March 1924 with the number 2899. It was bought at a cost of £750. Description: Hope’s apparatus is a glass test tube (Ø? 61), a cylinder, surrounded in the middle by a brass sleeve which holds a container equipped with an emptying pipe. Two holes at 80 and 230 mm of height on the test tube allow the insertion of two mercury thermometers. Use: The test tube is filled with distilled water which is cooled by a mixture of ice and salt. At the beginning we...

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