The Microscope. Its History, Construction, and Application 15th ed. Being a familiar introduction to the use of the instrument, and the study of microscopical science

CHAPTER I.

Chapter 120 wordsPublic domain

LIGHT--ITS PROPAGATION--REFRACTION--SPHERICAL AND CHROMATIC ABERRATION--HUMAN EYE--FORMATION OF IMAGES--VISUAL ANGLE--ABBÉ’S THEORY OF MICROSCOPIC VISION--DEFINITION OF APERTURE--NUMERICAL APERTURE--ABBÉ’S APERTOMETER--STEREOSCOPIC BINOCULAR VISION 12