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you’re left with your
imagination to fill in the
pasties.”
Cox, Caroline. The
Handbag: An Illustrated
History. New York:
HarperCollins, 2007.
Gallagher, Winifred. It’s
in the Bag. New York:
HarperCollins, 2006.
Pedersen, Stephanie.
Handbags: What Every
Woman Should Know.
Cincinnati: David &
Charles, 2006.
Styring, Kelley. In your
Purse: Archaeology of the
American Handbag.
Bloomington, IN:
AuthorHouse, 2007.
How Do Satellites
Work?
A satellite works by
receiving radio signals
sent from the Earth and
resending the radio signals
Joy feelings magazine
back down to the Earth. In
a simple system, a signal
is reflected, or "bounced,"
off the satellite. For
example, it is possible to
bounce a signal off the
surface of the Moon back
down to Earth. Because
the Moon is very far away,
for this to work the signal
from the Earth must be
very strong and the
receiver receiving the
signal must be sensitive
enough to detect the very
weak signal receive back
from the moon.
Unlike a passive satellite
such as the moon or the
early ECHO satellite, a
modern communications
satellite receives the radio
signal and sends it back
down to Earth stronger
than it was received. This
process is called
"amplification" of the