描述
By: Alannah Hegedus, Kaitlin Rainey | Illustrator: Bill Slavin
Our fast-paced world of fax machines, digital cameras, and cell phones is possible because of the work of inventors who paved the way for modern communications.
Meet:
Reginald Fessenden, who thought of a continuous wireless signal when he noted the ripples resulting from a rock he tossed in a lake;
Alexander Graham Bell, who made his famous call – "Mr. Watson, come here! I want you!" – because he had spilled acid onto his trousers;
William Stephenson, inventor of the wirephoto, who was a spy during the Second World War.
From newsprint to fiber optics, discover ten great inventions in this fascinating book, and a great resource for science projects and science fairs:
• Make your own paper
• Create your own halftone image
• Make your own pinhole camera
• Make a telegraph
• Use Morse code
• Make a light fountain
Our fast-paced world of fax machines, digital cameras, and cell phones is possible because of the work of inventors who paved the way for modern communications.
Meet:
Reginald Fessenden, who thought of a continuous wireless signal when he noted the ripples resulting from a rock he tossed in a lake;
Alexander Graham Bell, who made his famous call – "Mr. Watson, come here! I want you!" – because he had spilled acid onto his trousers;
William Stephenson, inventor of the wirephoto, who was a spy during the Second World War.
From newsprint to fiber optics, discover ten great inventions in this fascinating book, and a great resource for science projects and science fairs:
• Make your own paper
• Create your own halftone image
• Make your own pinhole camera
• Make a telegraph
• Use Morse code
• Make a light fountain