An optical instrument either processes light waves to enhance an image for viewing, or analyzes light waves (or photons) to determine one of a number of characteristic properties.
Read more about Optical Instrument: Image Enhancement, Analysis, Other Optical Devices
Famous quotes containing the words optical and/or instrument:
“People who have realized that this is a dream imagine that it is easy to wake up, and are angry with those who continue sleeping, not considering that the whole world that environs them does not permit them to wake. Life proceeds as a series of optical illusions, artificial needs and imaginary sensations.”
—Alexander Herzen (1812–1870)
“I doused the fatal instrument with lightning promptitude, but it was a good seven minutes before the last indignant handkerchief had folded its wings and gone back to its reticule and the last manufactured cough died protestingly away.”
—Margaret Halsey (b. 1910)