SPARKLESS ELECTRIC LABORATORY STIRRER An Ideal General Purpose Stirrer With Induction Motor
T N A talk recently Joel Hildebrand, President of the ACS, remarked that there is nothing orderly about research, except when it is finally written up for publication. Professors rarely are candid enough to admit that too often the search for knowledge by the scientific method is very illogical and haphazard. The student is given the impression by listening to carefully planned lectures and reading textbook assignments that to be successful in research requires logical reasoning alone. Actually in research when you have a logical approach and your premise is wrong, the truth may escape 3-ou. This does not mean that objectives are not required in research or that tentative hypotheses should not form part of the general plan of attack. In research the accumulation of valid data is fundamental to any research program. Research is a state of mind and a living process and stems from the innate curiosity of humans. Reasoning and imagination are two important facets of the human personality that make it impossible for the builders of those robot calculating brains to outwit man. Imagination can defy reason and permit association of ideas and new concepts to form, which from time to time give us glimpses into new fields that are later developed by minds whose substantial contributions are made by logical, step-by-step proof by reason and experiment. Imagination also is a necessary ingredient in the collating of seemingly isolated facts and data to arrive at a significant conclusion or concept. Many great discoveries have been made by men at an early age before, perhaps, their thinking was prejudiced by the conclusions and mass of evidence accumulated by their distinguished elders. Amassing of data by skilled and well trained scientists is, of course, necessary, and comprises a majority of that which is labeled research. Graduate students and postdoctorates have already learned that technical compe-
Eliminates Explosion Haza from Brush Contacts Watt-type Governor Stabilizes Speed $43.50
ADJUSTABLE SPEED AUTOMATIC SPEED CONTROL QUIET OPERATION LONG LIFE
No.
5230. ELECTRIC STIRRER, Sparkless. Complete with 6-foot connecting cord, line switch, and plug. For operation on 50 or 60 cycles, 115 volts A.C. Each $43.30
5230A. ELECTRIC STIRRER, Sparkless, , For 230 Volts, A.C. Consists of Ko. Ô230 , Stirrer equipped with a step-down trans- , former to permit operation on 230 volts 50 j or 60 cycles A.C. Each $54.75 j
5230
W. M. WELCH SCIENTIFIC COMPANY DIVISION O F W . M. WELCH MANUFACTURING
ESTABLISHED
1
COMPANY
880
1 5 1 5 Sed gwick Street, Dept. A - l , Chicago 1 0 , Illinois. U. S. A, Manufacturers of Scientific Instruments and Laboratory
Apparatus
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ABOVE: Model 1 9 1 0 Balance I n d u i t r i a l b e i n g υ sed t o determine e x a c t amount of oil a d ditive.
V O L U M E 2 7, N O . 2, F E B R U A R Y 1 9 5 5
INDUSTRIAL BALANCES
N o other balance offers the speed and accuracy of the new Micrometer Poise Industrial Balance. Any weight may be obtained in a matter of seconds by merely sliding a n d rotating the micrometer poise to the desired value. The balance also features an undivided fare beam to counterbalance a container so that net values can be read directly. For details on other models a n d prices write for free brochure.
OHAUS SCALE 1050 COMMERCE AVE.
CORP. UNION, N. J.
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