Ivan A. Getting synchrotron at MIT Radiation Laboratory. He also was involved in the development of the Sparrow III and Hawk missile systems; as well as commercial production of transistors at Raytheon. As a consultant to the US government: implementation of the Quick Reaction Capability for Electronic Counter-Measures; establishment of the SHAPE Supreme Headquarters Allied Powers Europe Laboratory at the Hague; deployment of U.S. air defense capability called the Semi-Automatic Ground Environment (SAGE) radar system; direction of studies on MX missile basing and long-range combat aircraft; technical analysis and design of a long-range supersonic bomber capable of reaching the former Soviet Union and
Subjective refraction Subjective refraction Subjective Refraction is an attempt to determine, by trial and error using the patient’s cooperation, the combination of lenses that will provide the best corrected visual acuity (BCVA). It is a clinical examination used by orthoptists, optometrists and ophthalmologists to determine a patient's need for refractive correction, in the form of glasses or contact lenses. The aim is to improve current unaided vision or vision with current glasses. Glasses must also be comfortable visually. The sharpest final refraction is not always the final script the patient wears comfortably. The following equipment is used to complete a Subjective Refraction: