WFU Department of Physics Wake Forest University

 

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WFU Physics Lecture Demonstrations

Parabolic Reflectors: IR Focusing

PIRA 4B40.20

Image:

Photo of Demo

Description:

One Parabolic reflector has a heat source (candle flame) at its focus. The other has a bulb and tube of air. During preparation, colored water is sucked into the tube of air and the hieght is marked. For the demo, the candle is lit on one reflector and the air in the other reflector's bulb will expand, lowering the water in the tube. No physical connection is present between the reflectors.

Recipe and
Location:

Paraboloc Reflectors
Lighter
Beaker
Colored Water

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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Information

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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