MEOrORD MAIL TRIBUNE. MEDFORD, OREGON
THURSDAY. MAY 11. 1961
Rapid Spinning of
Tiny Steel Spheres
Tool for Scientists
New York, N.Y.-(Scientlflc
American Feature) Steel
spheres no larger than those
that tip ball-point pens are
now being made to spin fast
enough to roll from New York
to San Francisco is less than
an hour, about 1.5 million
revolutions per second. At
such speeds the minute
spheres develop a billion
times the force of gravity and
when urged to spin even a
little faster they explode.
Why spin little spheres so
faSt? :
The answer . is simple ac
cording to Jesse W. Beams,
professor of physics at the
University of Virginia. "It's
fascinating," he says. ;
mm
A W i fit' I
jpjjP Show detail
12 Ct. Premium
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Diamond Ring
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1 Ct. Total Wt.
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Exquisite reflector setting. Bril
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or your money back"
SEARS
501 East Jackson SP 3-6661
Open Mon. t Frt. 'Til 9 p.m.
FREE PARKING
In the late 1920s, according
to Dr. Beams, he and Ernest
O. Lawrence were looking for
a way to make high-speed
photographs of the break
down of electric sparks and
of other phenomena of very
brief duration. They finally
hit on the Idea of mounting
a mirror on a high-speed tur
bine that was spun by a jet of
compressed air. "The Belgian
scientists," Dr. Beams ex
plains, "had conceived the
simple idea of spinning a
small fluted rotor on a Jet of
air. The xotor is raised from
its resting place by te air
stream and automatically
seeks a position in space
where its weight is just coun
terbalanced by the pressure
of air from ,below. By this
scheme, the Belgians were
able to spin small rotors, an
inch or less In diameter, to
several thousand revolutions
per second and to produce
centrifugal j fields of force
about 1 million times greater
than gravity. Adapting their
rotor to our needs constituted
my introduction to high-speed
rotation, s ,-.,: ,.
"The question then arose as
to whether we could use a
simple air-driven rotor for
spinning solutions and there
by increasing the rate at
which materials in suspension
would settle to the bottom,
such as the large organic
molecules that interest biolo
gists. The answer proved to
be yes, But we soon encoun
tered limitations to the upper
spedds that could be attained.
Air friction created serious
heating problems.
"We then undertook to
build 'ultracentrlfuges' in
which the rotor (up to foot
In diameter), could be spun in
a high vacuum. One of the
most difficult problems was
the development of a practi
cal vacuum-tight - oil gland
for the shaft that linked the
air turbine to the rotor. This
was finally solved and ultra
centrifuges of this general
type have been the principal
work horses of molecular
sedimentation experiments in
this country for the past 28
years.
Involved Work of Many
"It was only a step from
this development to the use
of electrical drives and mag
netic bearings, although tak
ing that step has involved the
work of marjy scientists and
graduate students for more
than two decades. The rotors
of our current machines take
the form of steel spheres.
They are supported In an an
evacuated space by electro
magnets, the strength of
which is controlled by the po
sition In space of the sphere,
If the sphere tends to drop,
more current is sent through
the electromagnet; to fall,
less current. Rotary motion is
Back Stairs: The Red Fox Tavern
By MERRIMAN SMITH
UPI White House Repottm
Washington - (UTS - Back
stairs at the White House:
Down in Middleburg, Va.,
where President and Mrs.
Kennedy spend the week ends,
those who are not fox hunt
ing or tooling around the
country lanes in their Jag
uars may be found frequent
ly in an ancient establish
ment known as theRed Fox
Tavern.
The history of the Red Fox
dates back to the 18th Cen
tum, the latter part, natural
ly, when George Washington
Refrigerator Cars
Derailed in Yard
Wenatchee X; ami - Five
Great Northern refrigerator
cars were derailed in the train
yard here Wednesday. No one
was injured. 't w
The cars jumped the tracks
when two connected ears
started rolling - and ran into
three others which were not
yet clear of a rail switch.
Heavy damage resulted to at
least two ot the cars. ,
A Great Northern spokes
man said the damage total
would be "no slight bit." How
ever, he declined to make an
estimate. -.. ." .' '
CALLING ALL CARS
Columbus, Ohlo-WPD-PoHce
here received a telephone call
Wednesday from1 an excited
man who said, "there's a man
with a gun at 90 W. Gay st."
Alert radio dispatchers imme
diately ordered two - patrol
cars to the scene. Then they
grew more alert and canceled
the order; 90 W. Gay st. is
Columbus', police .headquar
imparted to the sphere by an
alternating magnetic- field, of
the same sort that drives the
rotors of ordinary induction
electric motors. It turns out
that the friction of our mag
netic support 'bearing' la too
small to be measured. A 30-
pound rotar coasting . at 1,000
revolutions per second in a
high vacuum loses only about
one revolution per second per
day. In other words, the ro
tor could coast for more than
two and a half years after
the power is shut off.
. . "What good are high-speed
rotors? in addition to provid
ing biologists with a power
ful tool for separating giant
molecules, they can also be
used for fractionating nu
clear fuels and for determin
ing the mass of other mate
rials. They provide the high
est sustained speeds that can
be achieved mechanically in
a small laboratory, as well as
the highest sustained accele
rations attainable by any
means. These two attributes
make it certain that scien
tists and engineers will con-
tine to find new uses for the
techniques of ultrahigh-speed
rotation. ' -
may have dropped in to have
an ale while his wig was be
ing powdered.
The Red Fox usually has
eight or ten rooms available
for weary travelers, plus a
large brick-walled and oaken
beamed dining room. This
opens into a subterranean tap
room with the architectural
sturdiness of a colonial pow
der magazine. The front of
fice is a small enclosure at
which one is tempted to step
to the wicket and place a
couple of bob on her majes
ty's entry in the Balmoral
Cup. : . i
The second floor ot the Red
Fox is a rather doubtful area;
doubtful in the 'sense that the
only space seems to be an ex
pansive sitting room and
there certainly must be more
to the second floor that that.
The atmosphere Is suggestive
of hidden rooms and secret
panels that slide open noise
lessly when a burnished nob
atop the newel post on t h
second floor landing is turn
ed knowledgeably.
Early Door-Belting
The Red Fox has no need
whatever for the services of
a house detective. The sonic
condition of the stairs and
flooring supplies more infor
mation than a platoon of
house dicks. Besides, the front
doors are bolted and locked
at a relatively early evening
hour. Woe betide the night
traveler, dusty and weary he
may be, who presents him
self after the door-bolting.
Many may call, but few are
admitted. The night clerk
who also is the day clerk
quite understandably does not
like being fetched down the
melodious stairs from . his
chambers far above. 1 .
The sleeping rooms are on
the third and fourth floors
of the Red Fox and most of
the furniture is genuinely an
tique, some pieces to the point
of charming frailty. A room
with a view of the main street
of Middleburg is not regarded
as, particularly fortunate be
cause large trucks rumble
through the village at night,
giving the front room sleeper
a momentary sensation of hav
ing been ridden down by the
cavalrymen of centuries past.
About the only concessions
to modernity have been elec
tric lights, running water and
foam rubber mattresses on
the quaint, canopied four-poster
beds which once led a citi
fied visitor to inquire, "Who
sleeps In those crazy uppers?"
Ham and Frog Legs
The President and the first
lady to date have had no di
rect connection with the Red
Fox, although their Influence
is unmistakable and since
most of the people around
Middleburg sooner: or later
visit the Red Fox, the Ken
nedy's probably will drop by
in due time, possibly while
the President's wife is run
ning down early American,
furniture for the White House.
The Kennedy influence
seems most reflected at the
Red Fox in the tavern's recent
acquisition of a rather well
known French chef . whose
souffles . were "so ' excellent
that two Washington .restau
rants once sued tor his serv
ices.: ,:! f :
The Red Fox la managed
by Mrs. Nettie Michaelis who
looks much more like a col
lege senior's dream for prom
week than a Revolutionary
War innkeeper. Mrs. Michael
is sees nothing inconsistent in
having a French chef and
haut cuisine on the menu in
an inn so otherwise steeped 1
in basic Americana. '
Nevertheless, it Is down-1
right disconcerting to see on
the same menu with baked
Virginia ham such things as
frog legs provencale and bou
illabaisse. It might help If
they called it "Ye Olde Bouil
labaisse." '
HELPVy) US!
We Mod clothlnf, ihoai, disk,
furniture, and keMinaj.
Wo Pick Up.
HELP OTHERS!
The Salvation Army
30 N. Holly
SPrine 1-73JS
. ! --fee
' ' BP
Reach for the bread
that stays fresh
days longer!
Buy Holsum and get to enjoy
all the bread you buy, New
Miracle Wrap keeps Holsum
fresh from end .. .to end!
Buy The Premium Loaf Tod ayl
i
; i i i u I
OUR MOTHER'S DAY GIFT TO ALL MOTHERS!
mm$ I mil pouble
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MR
Thursday Eve, All Day Friday & Saturday - oh all purchases throughout the store
- J - ----(Excluded are alcohol & tobaccos) . , J
FRITOS Demonstration Friday and Saturday from 1:00 to 9:00 p.m.
Both Days. Reg. 49c Bag of FRITOS - 45c Plus FREE can of Bean Dip '
- . r "----i
PORK & BEANS , ANANAS 1
Hunts araa 214 cans. Ran. 20. ; . " MaV"Mk M aV"SaV W , I
. . . , ...
Plus Deubla Silver Dollar Stamps :
VIGORO Lawn and Garden Needs
35c lbs.
GOLDEN, Be. 14.51...... .NOW $3.89 I
ta a. . u j I
OC IDSi PINK. Rer. SS.5 . ....... .......NOW Nil 9
PINK, Rag. S.5 ,
Plus Deubla Sllvar Dollar Stamp
SIKONIZ Floor Wax
W Gal. Site, Rer. Vala ....;..... .......... .
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TASTEWELL Salad Dressing
Full Quart.;........
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$139 I
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'fBh SHIRTS i SBJCTISSUE
1 Impola and
ttf' 4-roll package
sport wear in jOaVjaBk
latest Spring. QOC
Style. JirW
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All Siies, , $af49 Silver Dollar Stamps
Refl. 3.98 value -Jb, '
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Fancy Golden Hands
mm
Plus DoubU Silver Dollar Stamp.
tanoM
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STAMPS!
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Extra Fancy, Large
Plu Double Silver Dollar Stamp
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RABBITS
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at
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TOMATOES
California fiald grown full of flavor
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I NALLEY'S
FINE RELISHES
Hamburger Hot Dog
or Sweet Relish -
12".29.
Plus Double
. Silver Dollar Stamp
wiaiiHMf uhiii Whole Kernel V " I
S03 Cans -V "'" I
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Del Mont. Fruit J p Larg
Cocktail M t ,0 I . V
Plu Double Silver Dollar Stamp. . I BaSKOt
White Star TUNA ""Lll8!!!?!!
Reg. H Can-Chunk I i
3mef I i Sweet, Juicy
v 1 V ' i-7,x" Ruby R,d
Dal Monte ura Pork
SAUSAGE
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I 3-ln. GaLtned (tuTl Ofil
Grapefruit
I , ideal for vour fithina triol
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S ' -r
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DONNIE
DOO FOOD
Folger's Coffee '
63elb. I
$1.37 Mb. can VSy
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OK'S FAMOUS
JUMBO PAN-READY
Don't Forget
Double Silver .
Dollar Stamps a
Thura. Eve., Friday
and Saturday
4 Groat ,
Chocolate Candies
.Mm!
33c I
33cillilT
10c S5c
rx i 1 i j
SUPER MARKET iCf .;" s. & &
I 1202 No. Riveriide , 1 r 15 1
I Open Till Midnight J v -1? J
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1 . Silver Dollar Tradina StamDi- I a 1
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SAir-t'.iitiiOX
Unconditionally Gusrcnt::!