... , was founded on July 9, 1877. After inventing the telephone, Bell continued his experiments in communication. He invented the photophone -transmission of sound on a beam of light. Bell also invented techniques for teaching speech to the deaf. Alexander Graham Bell died in Baddek, Nova Scotia, on August 2, 1922. Telephones back in the 1900's were modern. People had to dial the number by spinning the receiver ... . Technology has grown quickly to upgrade the telephone. Today we just have to press a number instead of spinning. The telephones are way different. Telephones today, have speaker...

• Word Count: 564
• Approx Pages: 2
• Grade Level: High School

... of the air accompanying the said vocal or other sounds. After inventing the telephone, Bell continued his experiments in communication, which culminated in the invention of the photophone-transmission of sound on a beam of light- a precursor of today's optical fiber systems. He also worked in medical research and invented techniques for teaching speech to the deaf. The range of Bell's inventive genius is ... two for a selenium cell. Eager to infuse a love of science and the natural world in others, Bell lent considerable financial and editorial support to both Science magazine and Natio...

• Word Count: 695
• Approx Pages: 3
• Grade Level: Undergraduate