From 1944 to 1947 the Committee on Sensory Devices of the National Academy of Scien ces developed eighteen different portable devices to aid the blind in avoiding obstacles. Only two performed sufficiently well, but these devices performed analysis on a point-by-point basis. This point-by-point analysis can be compared to a flashlight which "reveals only the small portion of the environment that falls within its scope (18)." Much remains to be learned about the physical properties and cues which affect object perception by the blind.
These issues were addressed by many scientists , including Diderot who, in 1749, recorded his observation that a blind person has the ability to perceive the presence and distance of objects. Since then different theories have been postulated to account for this phenomenon. One theory described obje ct detection through the use of skin sensitivity to temperature or pressure. Another theory offered pressure on the tympanic membrane (which vibrates with sound waves in the inner ear) as the mechanism of detection. Occult theories postulated object det ection through utilization of such phenomena as magnetism, electricity, or a sixth sense. The blind themselves had different interpretations of the mechanism of their perception.
Aunque no...no creo que estemos todavia en los niveles de ecolocacion de Daredevil...
Issue # 3 - Sin Titulo - No Preguntes Simplemente Leelo
Me gusto mucho este webcomic. Lo lei de una sentada...Muy buena historia y me gusto el pacing de la historia y el layout de las paginas...Esta en su mejor parte...y es ongoing.
Ahora salgo de la oficina a llegar a casa, a obscuras...a tientas. Cierra agosto y entra octubre.