Wednesday, 25 June 2014 15:33
I1-53: LEAD BELL AT LIQUID NITROGEN TEMPERATURE
Additional Info
- ID Code: I1-53
- Purpose: Demonstrate the effect of temperature on vibrations in a lead bell.
- Description: The bell can be sounded at room temperature. It is then cooled by placing it in a bath of liquid nitrogen, after which it is sounded at LN temperature. The difference in the tone can be ascribed to the increased crystalline structure when the bell is cooled.
- Availability: Available
- References: REFERENCES: (PIRA unknown.)
- Videos-1: sounded at room temperature
- Videos-2: sounded at LN temperature
Published in
I1 Thermal Properties of Matter
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I1-01: THERMOMETERS
Show several types of thermometers. Read More
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I1-11 THERMAL EXPANSION - BALL AND HOLE
Illustrate thermal expansion in a paradoxical way. Read More
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I1-12: THERMAL EXPANSION - BALL AND RING
Demonstrate thermal expansion. Read More
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I1-13 THERMAL EXPANSION - BIMETAL STRIP
Demonstrate differential thermal expansion. Read More
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I1-14: THERMAL EXPANSION OF ALUMINUM - OPTICAL LEVER
Demonstrate thermal expansion in a complicated way. Read More
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I1-15: THERMAL EXPANSION - PIN BREAKER
Demonstrate thermal expansion in a dramatic way. Read More
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I1-16: THERMAL CONTRACTION OF CUPS WITH LN
Measure coefficients of linear expansion. Read More
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I1-17: THERMOSTAT - MODEL
Model of use of a bimetal strip in a thermostat. Read More
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I1-18: BIMETALLIC STRIP THERMOMETERS
Allow students to see how bimetallic strips are used in thermometers and thermostats. Read More
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I1-19: LAVA LAMP
Demonstrate differential thermal expansion between two liquids, and to take us all back to the 1960s. Read More
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I1-21: WATER NEAR 4 DEGREES CELCIUS
Demonstrate that the maximum density of water occurs around 4 degrees centigrade. Read More
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I1-22: WATER DENSITY VS TEMPERATURE
Demonstrate the change in the density of water with temperature. Read More
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I1-32: RUBBER BAND CONTRACTION DURING HEATING
To demonstrate that rubber contracts when heated. Read More
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I1-40: REVERSIBLE THERMOELECTRIC DEMONSTRATOR
Demonstrate thermoelectric power generation or how thermoelectric devices can create hot and cold regions. Read More
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I1-41: THERMOELECTRIC MAGNET
Demonstrate production and use of thermoelectric current. Read More
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I1-42: THERMOELECTRIC FAN
Illustrate generation and use of thermoelectric current. Read More
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I1-51: RUBBER AT LN TEMPERATURE
Demonstrate how a normally elastic material at room temperature becomes rigid at very low temperatures. Read More
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I1-52: TUNING FORK AT LIQUID NITROGEN TEMPERATURE
Demonstrate the change in frequency of a tuning fork at liquid nitrogen temperature. Read More
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I1-53: LEAD BELL AT LIQUID NITROGEN TEMPERATURE
Demonstrate the effect of temperature on vibrations in a lead bell. Read More
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I1-61: DUST EXPLOSION
Produce a dust explosion. Read More
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I1-62: DUST EXPLOSION MODEL
Show why small particles of flammable material can create a dust explosion when ignited. Read More
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I1-63: HYDROGEN EXPLOSION
Produce a hydrogen explosion. Read More
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I1-64: BURNING CANDLE - COMBUSTION PROCESS
Demonstrate features of the burning process and to debunk myths about this supposedly well-known demonstration. Read More
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I1-71: SHAPE-MEMORY ALLOY - THERMOBILE
Illustrate shape-memory alloy. Read More
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I1-72: SHAPE-MEMORY ALLOY - ICEMOBILE
Illustrate shape-memory alloy. Read More
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I1-73: SHAPE-MEMORY ALLOY - COOL CRAFT
Illustrate shape-memory alloy. Read More
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I1-74: SHAPE-MEMORY ALLOY - CLOVER
Illustrate shape-memory alloy. Read More
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