OPTICS - GEOMETRICAL OPTICS - TOTAL INTERNAL REFLECTION NC State University Faculty Access

Previous Next

Television Stone
# 6A44.402


Description: The locality of Boron, California, produces a most unusual form of Ulexite. Gigantic hunks of this mineral are found in great amounts in the form of fibrous, compact veins. When polished, these specimens become the famous "Television Stone" sold to amateur collectors. The optical effect exhibited by Television Stone is caused by each of its individual fibers acting as fiber-optic cables, transmitting light from one surface to the other. Since all the fibers are parallel and compacted together, any image at one surface is transmitted through each fiber to the other surface. Thus, any text or image at the bottom of a specimen appears as if it is on top. For this effect to be seen, the specimen must be polished, since its surfaces must be smooth.

Purchased/Built: purchased

Setup Time: 1 hour

Quant. in Demo Room: 4

Source: Arbor Scientific


Keyword Search:
complete words only, or parts of other words?

Home Manual Demo Suggestions

NCSU Physics Demonstrations
© 2010, North Carolina State University Department of Physics. The design of this site nor the
contents may be copied without the express written permission of the NC State University Department of Physics.


WebDemo
North Carolina State University
All Rights Reserved, 2011