THE BATTALION Page 5
WEDNESDAY, AUGUST 13, 1975
Our regular $1.89
Spaghetti Dinner with
meatsauce, served in true
Italian style with garden
fresh salad and garlic
toast.
today.
No. 2 Pizza Inn of Bryan
Nextio Bryan High 1803 Greenfield Plaza
No. 1 Pizza Inn of College Station
413 Texas Ave.
Student hopes to detect meteors
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^ i
Bob Johnson with meteor radiation analyzer
1
I
TAMU graduate student Bob
Johnson is trying to capture
meteors on magnetic tape.
Meteors, known popularly as
“shooting stars,” should be plenti
ful during the study.
The Perseid meteor shower will
begin this weekend. It reached its
peak Tuesday night and continued
this morning. At its maximum, the
shower usually produces 50
meteors an hour. The Perseids
tend to be bright and leave “train-
s.”
Johnson’s interest hinges on re
search for his master’s thesis at
TAMU. Employing NASA-
designed electronic equipment, he
hopes to obtain data for a systema
tic study of meteors, their chemical
composition, velocity and mass.
The meteor radiation analyzer
(MRA) is being used under the di
rection of Dr. Ronald Schorn, Dr.
George Kattawar and Dr. Edward
Fry of TAMU’s Physics Depart
ment. The MRA was loaned to the
department on a long-term basis by
the Johnson Spacecraft Center.
The MRA detects meteors
through nine photometers which
are devices for measuring light in
tensity. They are packaged on an
equatorial-type telescope mount
ing.
Detected light of a meteor trail is
converted to an electrical signal.
Associated equipment including a
logic unit, digitizer, magnetic tape
recorder and power pack, treats
and stores the signal. Taped data
can then be reduced and analyzed
by computer.
However, the project has had
several difficulties.
First, the best meteor rates are
found between midnight and start
of morning twilight.
Finding “dark” also presented
problems. The MRS can’t be ex
posed to street and parking lot
lights, or any extraneous illumina
tion. It also requires electrical
power and secure facilities for stor
age of the bulky electronic compo
nents.
Johnson is using a remote corner
of the TAMU Research and Exten
sion Center at Bryan, but only for
six months. The combination of few
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productive meteor showers and
time limit could hamper the work.
“The system operates automati
cally once it is in operation,” said
Johnson, 1973 TAMU graduate
from Plano. “Appearance of a
meteor in the field triggers the re
corder, and the data goes on tape
automatically. ”
The motor-driven mounting
keeps the detector unit pointed at a
particular part of the sky. How
ever, it is difficult to select a region
in which meteors are most likely to
appear. The apparatus has a 23-
degree field of view from the
photomultiplier tubes, each about
two inches in diameter.
On a recent night, Johnson
counted 32 meteors. None went
onto tape, however.
The tubes are so sensitive to the
slightest amount of light that
flashlights and cigarette lighters
are banned while it is running. Any
light operates the recorder. Until
minor equipment changes are
made, such non-meteor light
sources use up Johnson’s special
tape.
Bryant aids
research at
bayou site
Dr. Vaughn Bryant, TAMU an
thropologist and botanist, is assist
ing research at one of the newest
archaeological sites in Louisiana,
the Bayou Jasmin Project near New
Orleans.
Bryant is working with colleagues
from Louisiana State University to
analyze pollen taken from the dig.
Bryant describes his role as de
termining prehistoric environmen
tal changes and indications of plant
domestication. In addition, he is
looking at fossil plant seeds to study
what kinds of foods persons living
3,000 years ago gathered and ate.
“My work also involves analyses
of preserved wood to determine
what kinds were used for the man
ufacture of houses, bows, arrows
and boats. Further, I am examining
coprolites for indications of diet,
methods of food preparation and
even health as reflected by the pre
sence of possible parasites,” he said.
The dig has created enthusiasm
among Bryant’s LSU colleagues.
“In my 20 years of the field,” exp
lains LSU curator of archaeology
Bob Newman, “this is one of the
most tremendous sites I have ever
seen.”
The site was first noticed in 1957,
but lack of money and staff pre
vented research. When work began
a couple of years ago on the junction
of two interstate highways, dredg
ings thrown up on the bank showed
an unusual number of artifacts from
different periods.
Bryant explains that the
Louisiana researchers are having to
use some unusual techniques since
the site is on the bayou and only two
feet above sea level.
Although Bryant will be analyz
ing pollen and coprolites, he said
some of the finds have included al
ligator tooth jewelry, a bone-tool
tip, ceramics and a clay ball.
Be careful with fire:
There are babes
in the woods.
OPEN DAILY
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1907 TEXAS
COLLEGE STATION
ROLLER SKATIi\ G
THURS.-SUN.