Low Temperature Phenomena

Everyday objects at low temperature

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Change of properties of objects after immersion in liquid nitrogen.

[In-Depth Description]

Lead Bell

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Dull at room temperature, rings clearly after immersion in liquid nitrogen.

[In-Depth Description]

Condensing Oxygen

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Atmospheric oxygen condenses on the outside of a teakettle filled with liquid nitrogen.

Magnetic Properties of Liquid O2

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Liquid oxygen is observed to be magnetic as it is attracted to the pole pieces of a magnet.

Change of Volume with State

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CO2 and He balloons in liquid nitrogen.

[In-Depth Description]

Meissner Effect

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Suspension of magnet above superconducting disc.

[In-Depth Description]

Persistent Currents

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Persistent eddy currents suspend magnet lowered over a superconducting disc.

Jumping Ring

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Shoot the ring through the roof after dipping it in liquid N2; Lenz's law induced EMF in metal ring.

[In-Depth Description]

Carbon Resistor and Bulb

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Carbon has negative temperature coefficient; bulb goes dull when resistor is dipped in liquid N2.

Copper and Bulb

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Copper has positive temperature coefficient; light bulb gets brighter when copper leads are dipped in liquid N2.

[In-Depth Description]

Contact Us

Mailing Address: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138
Campus Location: Science Center B-08A | Tel: (617) 495-5824 | Email: scidemos-at-fas.harvard.edu