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4B40.32 - Low Temperature Phenomenon

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​4B40.32 - Low Temperature Phenomenon

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Title4B40.32 - Low Temperature Phenomenon
Objective

To demonstrate how materials change when placed in a low temperature environment, specifically lead.​

StatusAvailable
Assembly Instructions

Get a dewer of liquid nitrogen, safety gloves and glasses, and the lead material.  Provide tongs in case the item is dropped into the liquid nitrogen.  ​

Setup Time10
Operation Time5
Preview Time5
Operation Instructions

Put on the gloves and safety glasses.  Wrap the lead wire around the provided cylinder to produce a spring-like shape.  Show that the spiral can stretch and deform.  Then dip the coil into the liquid nitrogen and wait til the nitrogen stops boiling.  When you pull it out, show that the lead now has the ability to spring back.  When using the lead bell, show that when you ring the bell before, it makes a thud.  Dip into liquid nitrogen until stops boiling.  Pull it out and show that it actually has a ringing tone once cooled.​

ExportableNo
Demo on DimeNo
PIRA 200No
Export Instructions (if different)
HazardsNone, Cold Hazard - Liquid Nitrogen
Analysis/Information
Category4 Thermodynamics
Subcategory4B - Heat and the First Law
Keywordsliquid nitrogen, lead, bell, spring, low temperature, rigid, springy
Construction Information
 
Equipment TitleUse SHIFT+ENTER to open the menu (new window).
  
QuantityUse SHIFT+ENTER to open the menu (new window).
  
liquid nitrogen
gloves for handling liquid nitrogen
2
lead bell
2
lead spring
2
tongs metal 12 inches
1
liquid nitrogen dewer
1