10 public-domain matches
Standards Of Length
Lights waves and their uses
THE DEPARTMENT OF EDUCATION INSPECTOR GENERAL'S REVIEW OF STANDARDS FOR PROGRAM LENGTH IN HIGHER EDUCATION
Results of the Comparisons of the Standards of Length of England, Austria, Spain, United States, Cape of Good Hope, and of a Second Russian Standard, Made at the Ordnance Survey Office, Southampton. With a Preface and Notes on the Greek and Egyptian Measures of Length.
The Use of Wave-Length Rulings as Defining Lines on Standards of Length
A Wave-Length Comparator for Standards of Length
The Measurement of End-Standards of Length
The Art of War
On a method for making the wave length of sodium light the actual and practical standard of length
On a method for making the wave length of sodium light the actual and practical standard of length
Lengths and Levels To Bradshaw's Maps — Lengths and Levels To Bradshaw's Maps