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Alexander Graham Bell and the New York City–Chicago telephone link
How the telephone was invented
Alexander Graham Bell demonstrating the telephone Evolution of the Phone actor portraying Alexander Graham Bell 1897 telephone telephone c. 2000 telephone: Alexander Graham Bell's sketch of a telephone Bell, Alexander Graham: telephone Alexander Graham Bell
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telephone summary
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ornithopter. Airplane and Aircraft. 3D illustration of Leonardo da Vinci's plans for an ornithopter, a flying machine kept aloft by the beating of its wings; about 1490.
Inventions: From Bayonets to Jet Engines
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A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
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Aphrodite. Greek mythology. Sculpture. Aphrodite is the Greek goddess of love and beauty.
12 Greek Gods and Goddesses
In this aerial photo, structures are damaged and destroyed October 15, 2005 in Balakot, Pakistan. It is estimated that 90% of the city of Balakot was leveled by the earthquake. The death toll in the 7.6 magnitude earthquake that struck northern Pakistan on October 8, 2005 is believed to be 38,000 with at least 1,300 more dead in Indian Kashmir. SEE CONTENT NOTES.
6 of the World’s Deadliest Natural Disasters
Stylish light blue jeans on wooden background, closeup of inset pocket
Why Do Jeans Have That Tiny Pocket?
After a perfect launch, spectators try to catch a last glimpse of Space Shuttle Columbia, barely visible at the top end of the twisted column of smoke.
7 Accidents and Disasters in Spaceflight History
solar eclipse, sun, moon, astronomy, space
How Do You Tell the Difference Between Total, Annular, Solar, and Lunar Eclipses?
Periodical Cicada, Adult, Magicicada spp. Requires 17 years to complete development. Nymph splits its skin, and transforms into an adult. Feeds on sap of tree roots. Northern Illinois Brood. This brood is the largest emergence of cicadas anywhere
Why Do Some Cicadas Appear Only Every 17 Years?
Pluto. The Changing Faces of Pluto. Most detailed view to date of the entire surface of the dwarf planet Pluto, as constructed from multiple NASA Hubble Space Telescope photographs taken from 2002 to 2003.
10 Important Dates in Pluto History

Beginning in the early 19th century, several inventors made a number of attempts to transmit sound by electric means. The first inventor to suggest that sound could be transmitted electrically was a Frenchman, Charles Bourseul, who indicated that a diaphragm making and breaking contact with an electrode might be used for this purpose. In the 1850s Italian American inventor Antonio Meucci had electrical devices in his home called telettrofoni that he used to communicate between rooms, though he did not patent his inventions. By 1861 Johann Philipp Reis of Germany had designed several instruments for the transmission of sound. The ...(100 of 8665 words)

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