This necessitates tighter tolerances air a refractometer as with a high battery

摘要

a luftrefraktometer measures the refractive index in the air by using a laser to a first nonlinear optical crystal is addressed by a portion of a zweitharmonischen wave transform is the laser and the zweitharmonische wave on a reflective spiege l, which in a second non-linear optical crystal atanother part of the laser beam to a zweitharmonischen wave produced by interference between interferenzstreifen transforming the harmonic wave by the first nonlinear optical crystal is produced, and the harmonic wave by the second nonlinear op. tables of crystal is produced, counts the number of interferenzstreifen, is generatedwhen the reflective mirror is moved, and shares the number of interferenzstreifen by the distance to the reflecting mirrors move.