Cell culture molecular biology primarily involves cultures of cells on flat plastic dishes. This technique is known as two-dimensional (2D) cell culture, and was first developed by Wilhelm Roux who, in 1885, removed a portion of the medullary plate of an embryonic chicken and maintained it in warm saline for several days on a flat glass plate. From the advance of polymer technology arose today's standard plastic dish for 2D cell culture, commonly known as the Petri dish. Julius Richard Petri, a German bacteriologist, is generally credited with this invention while working as an assistant to Robert Koch. Various researchers today also
Myth of the flat Earth Myth of the flat Earth The myth of the flat Earth is a modern misconception that Earth was widely believed to be flat rather than spherical during the Middle Ages in Europe. During the Early Middle Ages, virtually all scholars maintained the spherical viewpoint, which had been first expressed by the Ancient Greeks. From at least the 14th century, belief in a flat Earth among educated Europeans was almost nonexistent, despite fanciful depictions in art, such as the exterior of Hieronymus Bosch's famous triptych "The Garden of Earthly Delights", in which a disc-shaped Earth is shown floating inside a transparent