The exploration of space

Desiring to give those of our readers who may not have heard the broadcast the opportunity of reading so clear a statement of such a large phase of astronomical research by so eminent an authority, we asked and were readily granted permission to reprint the text. Possibly those who did hear the broadcast will, like ourselves, welcome the privilege of reading and studying it at leisure. We therefore, present it here with much satisfaction.     

A Reaction to Mehrens's NCME Presidential Address

As a state level measurement specialist, Tom notes that some psychometricians always have a list of reasons test data cannot be used to enhance the quality of educational decisions. He welcomes Bill's exhortation to be hope-oriented and calls on measurement specialists to provide decision makers with practical, understandable ways to best use test data.     

Application of Airborne Television to Public Education

In an effort to bring the advantages of television teaching to the maximum number of public schools, particularly those in hilly or sparsely settled parts of the country, a project has been launched to provide airborne transmission of six simultaneous school lesson program. Coverage area is increased approximately 20 to 1 by this means compared to the usual ground station coverage. Airborne transmission is the most economical and effective use of the available (UHF) frequency spectrum. Results already established regarding the use of television as a teaching medium are projected via an airplane flying at 23,000 feet altitude over an area covering parts of six Midwestern States. Educational advantages and problems inherent in ground station TV are intensified in this larger coverage area, and planning is governed accordingly. Technical problems include multiplex transmission of six lessons simultaneously, keeping the airplane on station, accommodation of transmitting equipment in the airplane, and determination of bandwidth for optimum picture quality.