Neuronal signaling. To support the general function of the nervous system, neurons have evolved unique capabilities for intracellular signaling (communication within the cell) and intercellular signaling (communication between cells).
Because of this, gyroscopes are useful for measuring or maintaining orientation. Invention History. The gyroscope was invented in 1852 by the French experimental physicist Leon Foucault (1819-1868) as part of a two-pronged investigation of the rotation of the earth.
Although endoscopes were first used by Hirschmann, in 1903,the development of the rigid endoscope by H. H. Hopkins and its use in maxillary sinus surgery, reported in 1989 by Hopkins and Kapang, were instrumental to our current understanding of sinus disease.