The Washington times., 1914-04-26
OF TOOLS
OF SCIENTISTS ENDS
Hundreds Visited Bureau OF
Standards to Examine VaIu-
able Electrical Apparatus.

The apparatus which have been on
exhibition at the exhibit of the Ameri-
can Physical Society. held at Bureau Of
Standards. Pierce Mill road. for the
last two days, are today being prepared
for return shipment to the various
research laboratories from which they
were entered.
The exhibit closed last night at 1880
o'clock. after a joint meeting of the
Physical Society and the American In
stitute of Electrical Engineers. Inter
esting demonstrations by experts were
given during the exhibit.
Manufacturers, importers. educational.
and Industrial research laboratories, as
we'll as Federal scientific bureaus, en-
tered apparatus, and during the exhibit
fifty papers on scientific and electrical
subjects were read by leading physicists
and electrical engineers. Featuring the
reading program was Sir Arthur Ruth
erford, noted English physicist. and re-
cent Nobel prize winner.
More than twenty-five rooms or tne
bureau were required to place the en-
tries on exhibition. T here were hfty-
FIVE exhibitors, among whom were Ine
Department Of Agriculture, Navy De,
partment, Smithsonian Institution. ana
the Department OF Commerce. Ten uni
versities sent entries. probably the most
Interesting of which was the exhibit of
Columbia University entered by Pro1s'
Albert c. Crehore and H. b. Williams.
Their exhibit demonstrated the elecIneal
nature of nerve Transmission, incluulns
an artificial nerve and recoros .axen
from It with the string galvonometer;
and the corresponding records secureo
rom living excised nerves.
Nearly every apparatus known 10
physicists and electrical engineers was
included in the large exhibit. There were
thermometers. barometers, wireless
telegraph sets, and delicate measuring
instruments. One of the last named was
actually used in measuring the heat OF
the stars. Besides these, there were
microscopes and incandescent lamps
analytical balances and variometers,
and all SO interesting that throughout
the two exhibition days a continual
stream Of people passed 10 ana ITO III
the entry rooms.
Probably one Of the most unique ex-
hibits was that of the Radium Research
Laboratory of Pittsburgh. 1t includeo
various radium salts tsulphate, promide,
and chloride). containing go milligrams
of radium element. A demonstration
was given in a dark room.
Two other exhibits which attracted at
tention were those of the Navy and war
Depa rtments. The former exhibit was. a
wireless apparatus. and the latter
pack radio telegraphic set. The demon
strator in charge explained that the
radio set could easily be set upon the
ba cks of two mules and brought into
the field in times of war. He said that
at present there are probably fifty OF
more Of these machines in use by the
United States army in and around Mex.
leo. The generator for the power
through which messages are sent Is
hand-propelled instrument: ana reauiIe:
| is attached to the keyboard instrument
and seldom, IL ever. fails In its trans
missional duty.
The wireless naval set Is utiiized ns
landing parties. and can easily be car
| ried inland by three men. The generator
! for this useful set Is also hand-propell
ed and has a carrying capacity OF be
tween thirty and sixty miles. 1t gen
| eraIIy is utilized as a means Of carry
| ing on communication with the shil
from which the landing party came.