New ideas for repairing and testing measuring instruments in rural localities

1961 ◽  
Vol 4 (6) ◽  
pp. 498-499
Author(s):  
G. V. Savchenko
Keyword(s):  
Measuring Instruments ◽  
Testing Measuring ◽  
New Ideas

General tendencies in processing automatically the results obtained in testing measuring instruments

1974 ◽  
Vol 17 (1) ◽  
pp. 80-83
Author(s):  
L. M. Zaks ◽  
F. S. Pinskii ◽  
V. S. Gershkovich
Keyword(s):  
Measuring Instruments ◽  
Testing Measuring

Concept of a new PZT

1978 ◽  
Vol 48 ◽  
pp. 271-278
Author(s):  
Chr. Kühne
Keyword(s):  
Mirror System ◽  
Measuring Instruments

The PZT according to MARKOWITZ, undoubtedly one of the most accurate measuring instruments, has become an integral part of astronomy in the last years. Yet there are two reasons why I still tried to improve the MARKOWITZ basic idea.For the MARKOWITZ process the use of a lens objective is imperative. Because of the diameter limitations of the lens objectives the magnitude is reduced. Although a 65 cm PZT has been put into operation in Washington recently, the thermal difficulties encountered made it necessary to control the temperature actively. In addition, the 65 cm diameter of a lens equipped with 4 elements can be considered as the very limit, but not for a mirror system.In addition there are still more disadvantages using lens objectives. The useable field is restricted by astigmatism, reducing the range of declination. The transmission, especially in the blue wavelengths, decreases very rapidly with the thickness of lenses. For large multilens objectives the transmission is less than for a mirror system.

New Ideas about Hypnotic Therapy

1958 ◽  
Vol 3 (12) ◽  
pp. 364-365
Author(s):  
MARTIN T. ORNE
Keyword(s):  
New Ideas

Tutoring: Some New Ideas

1978 ◽  
Author(s):  
Carol Taylor Fitz-Gibbon
Keyword(s):  
New Ideas
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