Guglielmo Marconi is one of the most important inventors of the modern age. Prior to Marconi's work, telegraph signals had to be transmitted through electric wires, but in 1895, Marconi successfully sent the first telegraph signals through the air. In 1901, Marconi transmitted the first wireless communication across the Atlantic Ocean. For his groundbreaking work with wireless transmissions, Marconi was awarded the Nobel Prize for physics in 1909. In addition to the development of radio, Marconi would also do pioneering work with short waves and microwaves. Marconi was born in Bologna, Italy. As a child, Marconi demonstrated a strong interest in science. Although he failed the University of Bologna entrance exam, he decided to continue pursuing scientific studies on his own. In addition to the Nobel Prize he later earned, Marconi also won many other honors for his revolutionary work in electronic communication. Book jacket.
Born into the family of a Boston candlemaker, Benjamin Franklin turned the lessons of his humble beginning into wisdom that helped found a nation.
Edwin S. Gaustad presents a balanced account of Franklin's life, emphasizing Franklin's character and personality and quoting extensively from Franklin's own writings.
A fictional biography of Benjamin Franklin, American patriot and one of the Founding Fathers of the United States.
The life of the printer, inventor, and statesman who played an influential role in the early history of the United States.
An introduction to the life and work of Alexander Graham Bell, inventor of the telephone. Includes activities. Suggested level: primary, intermediate.
"Forty years ago, Frank Nasworthy came up with one little idea that saved skateboarding from extinction. What do skateboarders do now that they couldn't do before! Gravity - defying tricks!"--Page 4 of cover.
Reginald Fessenden: Radio's Forgotten Voice
Norman Bethune: Doctor Under Fire
Pencipta agung dalam sejarah
... just as their money was running out , their efforts were finally rewarded . March 10 , 1876 , was a day to remember , as Thomas Watson heard Bell's voice over Painting by W.A. Rogers showing Bell explaining a telephone instrument 20.