Evening star., 1928-12-30
SOUNDS PRODUCED
IN NEW MANNER
Magnetic Tuning Fork Dis
covery May Aid Troubles
Besetting Radio.
BY the Associated Press.

BY the Associated Press.
NEW YORK, December 29.-Sounds
produced in a wholly new way were
listened to at the American physical
society section of the American Asso-
citation for the Advancement of Sci
ence today.
First, in a perfectly normal way,
magnetic tuning fork was caused to
sound note Of high, clear pitch, pro-
duced by 1900 vibrations per second.
But some distance away, in the same
room, stood two other sound modula-
tors, unattached through human. elec-
trical or mechanical means with the
tuning fork. No impulse Of any sort
was given these modulators. Yet when
an amplifier was attached to them, two
notes rose clear and distinct, almost
musical, to fill the room. They had
been caused by the tuning fork sound.
The amazing fact was that these two
notes were net the same as the tone
from the tuning fork They we're Of
lower pitch and each different from the
other. One was of e pitch of TOO vibra-
tions and the other Of 900.
The explanation is that the high
pitched tone sets up certain accom-
panying tones which are separated
from it by fixed regular intervals. The
demonstration was for the purpose Of
opening to physicists new method of
investigating one Of the great discov-
zf t1I. De- kI&ak &afx f0t1k
waves set up light Of different wave
length, or color, by a method which
seems to be almost exactly analogous
to what happens in the making OF
ghostly sound waves. This discovery is
known technically as the Ran1an effect.
The demonstration was made today by
r. v. L. Hartley of the Bell Telephone
Laboratories, New York.
May Aid Radio.
It's importance lies In the fact that
it may apply to such things as dis
covering the source of some Of the
troubles that still beset radio transmits
sion, and to all the changes Of chemis-
try and growth that depend on the &C.
ton Of atoms, for the Raman discov-
cry and the sound analogy, which was
demonstrated today, aim at unraveline
the action and structure of atoms and
molecules, of which every tangible OBJ
ject Is made. Intangible light itself
was said last night by DR.. Arthur H.
Compton of Chicago to be both particles
and waves combined.
The Raman discovery was made by
projecting light through benzine. From
| the collision of the light particles, OF
| waves, with the benzine molecules, GER
| tain new rays of light were set up
tr f1Hok rye
come from vibration In the molecIlle.
What psychology may accomplish
within 20 years by testing speech and
| thought by instruments known as
galvanometers was discussed before the
| psychology section by Prof. knight
Dunlap Of Johns Hopkins. At present
| he said it is impossible to separate the
useful accomplishment in the field
| from the foolishness. He estimated that
for 100000 equipment could be built
| that in a period of 20 years would
get definite and worthwhile results
from galvanometer and similar tests.
Proposes Radio.
"I am proposing" he said, "a ma
tiorlal psychological laboratory similar
in functions to the United States Bu-
reau of Standards, but not under Fed
eral control"
How does juice get into an orange,
and why does it stay there during the
long hours-yes, days--on peddler's 8
push cart? These questions were asked
and answered by DR.. Howard s. Reed
of the Citrus Experiment Station, Riv-
erside, Calf.
He found that the Juice travels
through the peel, that a substance like
gel" called pictin, which of late Is
coming into prominence In foods. alb
serbs the juices and transfers them
into the cells which squirt upon vests
and eyeglasses when eating begins.
But the pictin doesn't reverse the
process by letting out the juice, and,
once in the orange cells, it stays be-
cause nature hasn't provided many ways
excert teeth to take IL out.