Taming bubbles in zero
Through experiments aboard a jet that simulates weightlessness, a
Johns Hopkins engineer has shown that an electric field can kick
loose the bubbles that stubbornly refuse to move in outer space.
The research, sponsored by NASA, is important because managing
bubbles is crucial to the safe and efficient cooling of power
generators, propulsion units and life support systems in
Cila Herman, an associate professor of
mechanical engineering, had earlier shown that electric fields
could move bubbles in an earthbound lab. In mid-October, Herman
and two of her graduate students tested the theory in a
weightless environment. "To the best of our knowledge," Herman
says, "we were the first to use electric fields to detach and
move bubbles in microgravity."
ABC News turns lens on JHMI
The microscope has turned on the researcher. The Johns Hopkins
Medical Institutions will be the subject of a six-part
documentary set to air this spring on the ABC television network.
The series is intended to provide a comprehensive portrait of an
academic medical institution and to offer an intimate glimpse
inside Hopkins' own world of teaching, clinical care and
research, according to series producers.
A team of eight ABC production crews armed with
digital cameras has been granted almost unlimited access to each
facility on the East Baltimore campus for a three-month period
that began Sept. 29. In addition to filming at the schools of
Medicine and Nursing and at The Johns Hopkins Hospital and
Bayview Medical Center, production crews will follow Hopkins
caregivers and students at work in the field.
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