Journal of the Franklin Institute, Volume 211

Front Cover
Franklin Institute, 1826 - Meteorology
Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415]

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Contents

Transient Currents in Transformers H M Turner i
37
A Portable Spark Chronograph for Use on Either Direct or Alternating Current
59
The Photography of Waves and Vortices Produced by the Discharge of an Explosive
67
Dynamical Analysis of Machines with Two or More Degrees of Freedom
87
Notes from the TJ S Bureau of Standards
109
The Franklin Institute Notes
123
Publications Received
131
Entered at the Post Office at Lancaster Pa March 141918 as secondclass matter under act of March 3 1879
136
The Determination of Principal Stresses from Crossed Nicol Observations
457
A Solution for the Geometrical Trisection of Angles and the Proportional Dividing
475
XRay Studies of Motions of Molecules in Dielectrics under Electric Stress
481
Determinations on the SizeFrequency Distribution of Residual Undevelopable
489
Dynamical Analysis of Machines R Eksergian
495
Committee on Sciences and the ArtsAbstracts of Reports
507
The Franklin Institute Notes
523
Publications Received
532

Ajax Electrothermic Corporation Franklin Institute Member
136
The Franklin Institute
271
The Effect of Radioactive Radiations upon Euglena
303
Neon Tube Light and Factors Governing Its Life Raymond R Machlett
319
A New Cyanide Furnace R F James and Glenn Coley
327
The Depression of Density Produced by the Presence of Bromide in the Developer
335
Primer Testing Set R Alden Webster
349
Committee on Sciences and the ArtsAbstracts of Reports
367
Notes from the U S Bureau of Standards
373
The Franklin Institute Notes
387
Publications Received
397
Entered at the Post Office at Lancaster Pa March 141928 as secondclass matter under act of March 3 1879
404
The Franklin Institute
404
APRIL 1931 No 4
405
Entered at the Post Office at Lancaster Pa March 141928 as secondclass matter under act of March 31879
538
The Franklin Institute
538
MAY 1931 No 5
539
XRays in the Steel Industry H H Lester
567
Recent Dielectric Constant Theory and its Relation to Problems of Electrical Insula
581
PiezoElectric Gage and Amplifier R Alden Webster
607
A Thermionic Megger with Linear Scale Otto Stuhlman Jr
617
Dynamical Analysis of Machines R Eksergian
627
Notes from the U S Bureau of Standards
653
The Franklin Institute Notes
667
Book Reviews
674
Publications Received
681
Entered at the Post Office at Lancaster Pa March 14 ioa8 as secondclass matter under act of March 3187P
688

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