History Of Technology in Education

  Ice-making Machine(1865) *Lowe revolutionizes food storage. ... it is with great pleasure and satisfaction that we welcome proof of [Lowe's] genius." (The manufacturing of ice was a major commercial activity until the advent of electric refrigerators)           Thaddeus Lowe (1831-1913) did not only invent the mble ke making machine, he also made waves in eronautics, engineering, and chemistry In the course of his work on the cooling properties of compressed gases, he became interested in carbon dioxide specifically and, putting his research into practice, developed the "Compression Ice Machine" in 1865.After the American Civil War, Lowe began extensive research on the properties of gas Refrigeration is essentially a process whereby heat is renoved from an enclosed space and ejected somewhere else.            Professor Joseph Henry, Smithsonian Institution systems work by using a chemical, usually gas, to remove the heat. As the gas expands heat is turned into kine

  Single-Lens Reflex Camera (1861) # Sutton ushers in modern photography with a new camera .             Single lens reflex camera                    The modern era of photography began in 1861 with the invention and patenting of the world's first single- lens reflex (SLR) camera by photography expert Thomas Sutton (1819-1875). His prototype led to the creation of the first batch of SLR cameras in 1884, with a design that is still in use today. Sutton also assisted James Clerk Maxwell in his successful demonstration of color photography in 1861.                                   In non-SLR cameras, light enters the viewfinder at a slightly different angle to that at which it enters the lens, so the resulting photo can appear different to the intended composition. in SLR cameras, a mirror is positioned in front of the lens and directs light up into a pentaprism. The light bounces between its edges until it enters the viewfinder with correct orientation, as if the viewer is looking d

  Color Photography(1861)  *Maxwell develops the trichromatic process for producing color images. *Maxwell's composite image of three photographs shows tartan ribbon through filters of different colors. British mathematician and physicist James Clerk Maxwell (1831-1879) was a giant of nineteenth- century science. Best known for his Maxwell equations, which were the best insight into electromagnetism of their day, his interests also included Saturn's rings and the human perception of color. It was this latter interest that led to the first color photograph in 1861. In the manner of a true showman, Maxwell revealed his photograph of a tartan ribbon at the Royal Institution in London. His studies of human vision, including the condition of color blindness, had led him to conclude that color images were possible using a " trichromatic process ." He had arranged for his tartan ribbon to be shot by professional photographer Thomas Sutton, the inventor of the single-lens ref

             Air Conditioning (1902)                 Carrier makes the world a much cooler place to live. The ancient Romans tried to keep their buildings cool during hot weather by pumping water from aqueducts through the wall of their houses, whereas in south-east Asia people hung wet grass mats over the windows to lower the temperature of air inside. Modern air conditioning, which arrived in 1902s, is the continuation of this rudimentary principle.  (1876-1950) of Buffalo, New York, developed the fundamental scientific theories of air conditioning. His first system was designed for use in a printing plant. Changes in the temperature and humidity of the plant were causing the ink nozzle to be out of line, which made color printing problematic. Carrier was assigned with the task of fixing this problem. His early system, which made use of spraying nozzles to cool and dehumidify the air, was large, extremely expensive, and rather dangerous because it relied on the use of ammonia as a c