HomeMy WebLinkAboutThe Seaforth News, 1939-03-09, Page 7THURSDAY, MARCH 9, 1939
THE SEAFORTH NEWS
,PAGE SEVEN
Duplicate
Month)'
Statements
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The Seaforth News
Phone 84
TELEVISION
The year 1939 will undoubtedly go
down in history as the year television
really started in the 'United States.
Special attention should be paid to
'the word JPistarted."
Radio broadcasting started in 1920.
It was 192 before even the 'first com-
mercial sets were available, 11904 'be-
fore they started to sound very good,
and 19216 when commercial manufac-
ture rea411v hit its stride, networks
were started; and radio could be said
to have arrived. There have 'been 113
years of refinement sinoe then.
So television will "start" this year,
and its first footsteps will be those of
"starting? years, 'This warning is ne-
cessary in view of- the thousands who
have been led to expect, through
years of build-up publicity, that they
would have the latest television in
their homes by summer.
"Just what am I going to see and
how match will it cost me?"' sums up
the average question on television
today. Let us first consider what the
looker -in actually will look at.
The television system ready to be
released by several leading manufac-
turers and the National and Columbia
broadcasting organizations this year
is known as the "cathode ray syst-
em," !based on the use of a tube
known as the cathode ray tube.
This long glass tube has a Hat end.
On this end the picture will unfold.
In some sets the end of the tube will
be viewed in a mirror mounted under
the liftable top of the cabinet, while in
others it will appear where the dial
appears on most radio sets, The The
loudspeaker will be mounted at the
bottom of the cabinet as at .present,
113. JANUARY MO
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On the best sets the picture
"screen" will be 714 by 110 inches. Its
detail will be equivalent to the ordin-
ary home movie. The color of the pic-
ture will be 'bleck and white. In front
there are sole six kno'b's which con-
trol the picture and the accompanying
sound, There will he little .flicker.
It sounds simple. For the looker -in
it will be. But back of it is a most
complicated eleotric'a'1 arrangement,
an example of what engineering geni-
us can achieve when backed by mil-
lions, for that is what bringing tele-
vision up to its present point has .cost.
A brief summary of how this sys-
tem works may be interesting. In the
cathode ray tube a beam of electrons,
having a'bsolute'ly no inertia, makes
spot of light on the end of the tube,
This spot can instantly follow
changes of light and shade. It is
awung rapidly hack and forth and
slowly up and down, The 'combination
of these two movements with the
shading control of the spot makes the
picture.
Seeking high definition television in
the early days when mechanical
methods were 'being investigated, the
engineers found that ' by the then
known mechanical methods it would
take huge machinery to give a picture
of 4411 lines, the present standard.
Then came the •cathode ray tube,
whose inertialess beam could be
swung at a high definition speed
without increasing the size, noise or
cost of the apparatus over law -speed,
low -definition operation.
Here was a way out, Immediately
the big interests threw their entire re-
sources into cathode ray research.
The• result is the present system.
One mechanical development con-
tinued, however, which promises to
be a potential challenge to cathode
D. HI Mclnnes
CHIROPRACTOR
Office — Commercial Hotel
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FOOT CORRECTION
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Phone 227.
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THE SEAFORTH NEWS
[ray television, the vibratory mirror
scanner of William Priess.
Returning to the cathode ray d
cussion, to obtain a camera with
system, a plate, much like a pho
graphic plate, is mounted in a catho
ray tube, This plate is covered .w
thousands of minute light-sensit
cells. On this plate is focused the p
ture-. Across this plate sweeps a ca
ode ray electronic beam which
eraily "picks off" line after line of t
picture being televised with incre
i•ble speed.
To connect the camera and the r
ceiver so the identical scanning pr
cess is occurring in each, two sync
Tonicity frequencies are sent out a
received, one ifor the vertical .swi
and one for the horizontal.
A picture made up of 4'4h lines w
found necessary to get the regeiir
detail. This meant a Wide band
frequencies to transmit. Add to th
band the synchronizing impulses a
the voice channel and you have a ve
wide band of frequencies to handl
On the receiving end these 'aria
signals must be ,separated and an
pliiied,
Such a complicated system nature
ly is going to cost much more to bo
send and receive than ordinary soun
radio, which television engineers no
call "child's play." Add to that fac
the demand for pictures of fair siz
which means at least 7% by 10 incite
for a good set, and we are facedwit
having to use large cathode ra
tubes, which are expensive.
The recital of these points leads us
to the questio not price. And the an -
ewer to that is $3150 to $50.0' for a 7'
by 10 inch picture receiver, If you
must pay less you will have to' be sat-
isfied with a smaller picture, If you'll
accept a .i, by 4 inch picture you can
get a receiver for front $1150' to $200.
At this time there appears no likeli-
hood of television receivers at any
lower price,
The large size cathode ray tubes
demanding heavy protective cover-
ings, the limited size of the pictures,
the high voltage used, 'which how-
ever, is not particularly dangerous,
the interference from automobile igni-
tion and medical diathermy machines
causing "snowtfiakes" on the screen,
and finally the fact that interlacing of
the pictures to eliminate flicker often.
results in a 320 instead of 4'411 line pic-
ture, are some of the existing prob-
ems in television' a1 it makes its boar.
The engineers, however, are optim-
atic, confident that these prohlents
re not as difficult as triose already
vercome and that they will all be
olved in the first few years of cath -
de ray television,
There is still another answer to re-
eiving the now cathode ray broad-
asting without using cathode ray
ubes and getting a picture 20 by 24
tches square. This is an ingeniva
5ii rli,h development.
It does what American radio en g fin-
ers said was nnpoesible a few years
ga. It receives 441 line pictures with
techanical scaunine,
This error on the part of the
tgineers is quite understauclerahle,
s the radio engineers worked w-
ard more detail they tended to sil-
ly enlarge mechanical appartu.. This
f course was fatal, as large sized,
st moving parts cannot be counten-
iced. Then came the cathode ray
be. Here was just what the radio
tgineers wanted, an all -electric .yst-
nl Atway with mechanical means!
nd that's just about what happened,
techanical research was stopped al-
ost every'w'here except for a few
nail laboratories.
One of these was Scophony, Ltd.,
London, headed by ,Solomon Sw-
ell. He decided to see the median -
al system through. The result is an
cellent piece of engineering re -
arch. Based primarily on optics the
`stem is described as "'optical scan -
ng." 13y a device called the "split
ccs" much smaller mechanical scan -
ng units may be used. This "split
ccs" is an optical arrangement of
littdrical ]encs with their axes
ossed- so that a beam of light is
cased in two separate planes.
The other major Scophony inven-
on tis the "Supersonic Light Con
-
ca" which is simple in construction
it very technical to describe. Its eff-
t may be summed u pin that it
ves a much greater amount of light
an does the ordinary "spot" system.
night the likened to the difference
tween scanning with a period and
anning with a long dash,
Motivation of these various beams
light is obtained 'by 'hivo rotating
3'0,31715 r. p.m. and the other at 250
p.m. The high speed drum, one of
e chief challenges in getting meth
teal television to receive high defin-
on pictures is operated 'by an "Tie-
nt little motor, only some three
cites in diameter, which is said to
ve as long a life as a good radio
be .and is not expensive to replace.
With the Scophony system. a well-
uminated picture measuring 24 by.
inches it obtained and numerous
Ports from England confirm the
gh quality of the reproduction. A
is-
his
Lo-
de
itlt
Eve
ic-
t
]it-
he
d-
o-
h-
nd
ug
as
ed
of
is
std
ry
5,
us
1-
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d -
w
e,
a
h
Rev. k J. Wilson, B,A, 'B.Ia„ for-
merly minister of St. Andrew's Unit-
ed Church, Napanee, who has moved
to Toronto and is completing 'organ-
ization of a ,new journal for the Tln-
ited Church,
fairish amount of amplifying appara-
tus is used as in the cathode ray rec-
eixer but there is no large tube nor
high voltages. -
Very even synchronizing signals
must be sent out by a transmitter for
reception by the Scophony apparatus,
If the cathode ray standards should
be accepted by the government, with
the inevitable result of freezing tele-
vision into. those requirements, it
could at least be expected that trans-
mitters would be required to send out
a synchronizing signal which would
permit Scdphony and other non -cath-
ode ray receivers to tune in on the
picture, in order to insure a free and
open market. The price of a Scoph-
any receiver in the American market
will eb around $3100, states Mr. Sagall,
which is a little lower than the aver-
age price quoted for a 7154 by 10 inch
cathode ray picture receiver. When it
is realized that the 'Scophony screen
measures some two feet across, con-
sidered just desirable size by many
persons, the possibilities of this type
of receiver as an answer to "avhat
will I see," are very definite.
Thus we have an idea of the type
of receivers on,which television may
be seen this year within '50 miles of
1New York City and In the metropoli-
tan areas of Albany, Schenectady,
and possibly Los Angeles. Fifty utiles
is the distance that television can ard-
dinarily be broadcast at present.
CARDINAL PACELLI CHOSEN
AS POPE PIUS XII
Eugenio Cardinal Paeelli, former
papal secretary of state, last Thur --
day was elected -Pone to succeed Pias
NT, who died in February.
As the 2521id Pope he ihn-t• .h,
Itante Pius XII. The :WV 'soon`'
eeeded 1u ;he throne af St, Peter .
Bi. t aid birtiCay,
herd of 331 million is n; .3(11 •li -
is an Italian.
Flection of I'arei11 ,ut ota third %al-
lut of the first day the ee,n:'ave
voting was un'.ire.'edented in the ,:,,-
dent hi'.tory 01 the eii arch. Not s•__._
the year Ica:, schen Gregory X1" a as
chosen, fix, the lady conc1'ntc
so rapidly.
The election' also shattered anotia`
tradition since rarely has the )'rind
Secretary of State been .nam`.
tiff. The date of his coronation .r
set for .March 12th.
The nein Pape. a ttentber nt a
Italian noble family whose reiatior.s
with the Vatican always have !wen
timate, was reported bet.'re the c'c-
clave of the Sacred College to `tare
been the favorite of foreign cardinals
for election to the throne o' St.
Peter's, This was due to tine 'act at
was believed 'to. be the cardinal best
qualified to continue the •t•,oliele,
the late pontiff.
As if to indicate his intentions of
following in the footstepa of his be-
loved predecessor, Cardinal Paeelli
selected the same name,
Drawn Butter Sauce
1/3 cup butter
3 tablespoons flour
1,3 cups hot water
Va teaspoon salt
;'s teaspoon pepper
b teaspoon lemon juice
Melt half the butter. Add flour and
salt and pepper. Add hot water grad-
ually. Stir until tnisture thickens.
Cook 5 minutes. Add lemon juice and
remaining butter. Serve •wtih fish.
Hollandaise Sauce
l4 cup butter
2 egg yolks
?d teaspoon salt
Few grains cayenne
.1'3 cup boiling water
1. tablespoon lepton juice
Creast the •butter. Add beaten egg
yolk, Add seasonings and water.
Cook over hot water, stirring con-
stantly until mixture thickens. Re-
move from heat, Add lemon juice.;
Delicious served swith fish or such
vegetables as asparagus or .broccoli.
Notice to Creditors. 3 irks. for $2,50