WFU Department of Physics Wake Forest University

 

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WFU Physics Lecture Demonstrations

Conduction in Liquids

PIRA 5D30.10

Image:

Photo of Demo

Description:

A bulb has two probes that make an open circuit when initially plugged into the socket.  Placing the bulbs into ordinary tap water does not complete the circuit.  However, add a dash of salt, and the ions are free to carry current, closing the circuit and making the light glow.  The more salt, the brighter the bulb. 

Recipe and
Location:

Conduction in Liquid Demo
Salt
Stiring Rod

Video:

Streaming Video:

None

MPG Video:

None

Real Video:

None

Notes:

none at this time

 

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Demos

Mechanics
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100 Olin Physical Laboratory
Wake Forest University
Winston-Salem, NC 27109-7507
Phone: (336) 758-5337, FAX: (336) 758-6142
E-mail:
wfuphys@wfu.edu