Word: corrector
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Dates: during 1990-1999
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...five of the most significant errors scholars have made in biology (or physics, history, etc.). Indicate why they are errors, who made them and what persons are mainly responsible for correcting them. You may receive extra credit if you can describe an error that was made by the error corrector...
...NASA committee investigating the defect that has crippled the $1.5 billion telescope announced yesterday that the millimeter mistake was found while testing the measuring device, called a null corrector...
...investigation committee said in a one-page statement that it found the millimeter error while testing a null corrector on Wednesday at the Hughes Danbury Optical Systems plant in Danbury, Conn., where the mirrors were made...
Hughes Danbury had preserved the null corrector in the exact position that had been used to grind and polish the mirrors in the early 1980s...
Preliminary results of the test, the statement said, "have revealed a clear discrepancy of approximately one millimeter between the design of the null corrector and the device as it exists...