8.8.1 Optical property of colloids (3 Ultramicroscope Fig. L. The first arrangement for making ultramicroscopic particles visible Theoretical visibility: 0.2-0.36um principle of ultramicroscope The amplification: 1000 1925 Noble prize Germany, austria, 1865-04-01-1929-09-29 Colloid chemistry(ultramicroscope)Richard A. Zsigmondy (3) Ultramicroscope 1925 Noble Prize Germany, Austria, 1865-04-01 - 1929-09-29 Colloid chemistry (ultramicroscope) principle of ultramicroscope 8.8.1 Optical property of colloids Theoretical visibility: 0.2-0.36 m The amplification: 1000