Complex sentence: In 1959, Latta and Hartman discovered that the edge of broken glass could be used to cut thin sections of specimen, glass knives are very popular in ultramicrotomy for trimming specimen blocks and cutting thin sections.
Split into simpler sentences: In 1959, Latta and Hartman discovered that the edge of broken glass could be used to cut thin sections of specimen. Glass knives are very popular in ultramicrotomy for trimming specimen blocks and cutting thin sections.