Landell de Moura was appointed to priesthood in 1886 in Rome. He studied physical sciences, and made his radio broadcast over 8 km in São Paulo, He was granted a Brazilian patent on March 9, 1901. Landell de Moura made a journey to the United States and acquired three patents there, for a "Wave Transmitter" (October 11, 1904), a "Wireless Telephone" and "Wireless Telegraph", both on November 22, 1904. His later requests to the Brazilian government for help in developing his invention were denied, and his efforts then declined.
Roberto Landell de Moura was born January 21, 1861 in Porto Alegre, Brazil. He went to Jesuit schools, Landell showed an early talent for science and technology and enrolled in a polytechnic institute in 1879. His brother told him to come to Rome and study for priesthood, and in unison followed his scientific curiosity at the Gregorian University where the faculty, laboratories, and academic environment were higher-ranking to any in Brazil. Landell completed his studies and went back to Brazil as an ordained priest in 1886. Early in his occupation, the church shuffled the new priest from town to town seven times until he eventually became a vicar in São Paulo. The young Padre Landell continued to be a eager researcher and kept up with modern scientific literature. He also had two targets. He wanted to expand the foundation of technical and scientific knowledge in Brazil and to show that the education of the physical universe was completely suitable with the beliefs of the Catholic Church.
While in his studies in Europe, Landell witnessed the work of many inventors who were improving wireless communication devices. Supreme among these was Alexander Graham Bell's Photophone, a wireless telephone that used sound to adjust a stream of reflected sunlight directed at a photoelectric cell that changed the light into an electric telephone signal. Bell reveled the Photophone widely in 1881 and set up a lab in France to unfold a improved model of it. American Amos Dolbear, a professor at Tufts College, brought a distinct type of wireless telephone to Europe in 1882. At the same time, Thomas Edison and Lucius Phelps in the U.S. and Willoughby Smith in England formulated wireless telegraph systems to communicate with moving trains. Padre Landell also read about Heinrich Hertz's experiments with radio waves and Edouard Branly's coherer that became the first practical receiver for these waves.
Presuming that he had the skillfulness to build an innovative wireless telephone system, Padre Landell began work on a model in his laboratory sometime in 1893 and tested it at São Paulo in early 1894. Landell's invention was a collaboration of three different wireless telephone systems. The first, which he called the Esophone, was an acoustic telephone with megaphones at each end and a pair of telescopes to ease accurate arrangement. The second system was a version of Bell's Photophone, again using telescopes to align the reflector and receiver. The third system, called the Radiographone, was a crude radio wave transmitter and receiver. Depending on atmospheric order, Landell could switch modes to advance communication, and use the Radiographone to ring a bell, gesturing a call, in any of the modes. He declared that the device would work as a telegraph with a few simple altercations and could attain transmission distances up to 15 miles.
Roberto Landell de Moura was born January 21, 1861 in Porto Alegre, Brazil. He went to Jesuit schools, Landell showed an early talent for science and technology and enrolled in a polytechnic institute in 1879. His brother told him to come to Rome and study for priesthood, and in unison followed his scientific curiosity at the Gregorian University where the faculty, laboratories, and academic environment were higher-ranking to any in Brazil. Landell completed his studies and went back to Brazil as an ordained priest in 1886. Early in his occupation, the church shuffled the new priest from town to town seven times until he eventually became a vicar in São Paulo. The young Padre Landell continued to be a eager researcher and kept up with modern scientific literature. He also had two targets. He wanted to expand the foundation of technical and scientific knowledge in Brazil and to show that the education of the physical universe was completely suitable with the beliefs of the Catholic Church.
While in his studies in Europe, Landell witnessed the work of many inventors who were improving wireless communication devices. Supreme among these was Alexander Graham Bell's Photophone, a wireless telephone that used sound to adjust a stream of reflected sunlight directed at a photoelectric cell that changed the light into an electric telephone signal. Bell reveled the Photophone widely in 1881 and set up a lab in France to unfold a improved model of it. American Amos Dolbear, a professor at Tufts College, brought a distinct type of wireless telephone to Europe in 1882. At the same time, Thomas Edison and Lucius Phelps in the U.S. and Willoughby Smith in England formulated wireless telegraph systems to communicate with moving trains. Padre Landell also read about Heinrich Hertz's experiments with radio waves and Edouard Branly's coherer that became the first practical receiver for these waves.
Presuming that he had the skillfulness to build an innovative wireless telephone system, Padre Landell began work on a model in his laboratory sometime in 1893 and tested it at São Paulo in early 1894. Landell's invention was a collaboration of three different wireless telephone systems. The first, which he called the Esophone, was an acoustic telephone with megaphones at each end and a pair of telescopes to ease accurate arrangement. The second system was a version of Bell's Photophone, again using telescopes to align the reflector and receiver. The third system, called the Radiographone, was a crude radio wave transmitter and receiver. Depending on atmospheric order, Landell could switch modes to advance communication, and use the Radiographone to ring a bell, gesturing a call, in any of the modes. He declared that the device would work as a telegraph with a few simple altercations and could attain transmission distances up to 15 miles.