Search
Displaying 26 - 50 of 78
… used at the United States Mint in Philadelphia. Thonnelier invented the press in France in 1833. It was operated by …
… Temple University Laura E. Toran, Ph.D. Temple University Rodrigo Vargas, Ph. D. University of Delaware John F. … Szalewicz, Ph.D., D.Sc. University of Delaware Mark Trodden, Ph.D. University of Pennsylvania Arjun Yodh, Ph.D. …
… Introduction In today's world of high-speed, high-resolution … that just seventy-five years ago, the act of photographing lightning strikes was an innovative, award-worthy … Both? What were his contributions to the photography of lightning? A Word on Perspective Born in England in November …
… Curatorial Staff with Lightning Rods on loan from Josh Sapan (IC2012-001) How many times … # 4822) since 1982. The most recent outgoing loan is the Lightning Rod (Catalog # 740) to the National Museum of …
… exhibits that provide hands-on learning experiences that introduce and reinforce key science concepts in creative and …
… Introduction Born in a rural village in Croatia, Nikola Tesla … company and, with his characteristic enthusiasm, worked, invented, and began his avalanche of discoveries. However, … correspondingly large voltages and frequencies—artificial lightning bolts 135 feet long and accompanying thunder heard …
… with thunderstorms; if the edge of a thunderstorm that has produced lightning in the past 30 minutes is within ten miles of the …
… Introduction First an apprentice in the trade of jewelry … All aspects of a large manufacturing plant were being invented as required: the logistics of fuel and raw … tools to make the parts—to make the locomotives—had to be invented first. A Complex Process Steam, the propellant for …
… for his "life-work in successful invention." Berliner invented the microphone or "loose contact telephone … to the field of telephony and the science of sound reproduction. Among his other achievements, Emile Berliner devised a method for duplicating disc records and invented acoustic tiles, which aid in ensuring proper …
… Introduction What was Thomas Alva Edison's most important … him to devise an improvement on the telephone recently invented by Alexander Graham Bell; the strength, and thus, … unique efforts. Telephone Transmitter The telephone, invented by Alexander Graham Bell in 1876, converted the …
… Introduction Who was Elmer Ambrose Sperry? What was the … and to form companies that would manufacture and sell his products. Chicago saw the founding of the Sperry Electric … the electric dynamos and arc lamps that Sperry had invented as a teenager. Over the next fifty years, Sperry's …
… Introduction Ranked among the most famous inventors in the … transmitted vowel sounds, when in actuality it only produced them. However erroneous, this exciting idea prompted … Prior to perfecting the telephone, Alexander Graham Bell invented and demonstrated the harmonic telegraph at the …
… Introduction Who was William S. Burroughs? What was the … with banks and balance sheets, gave him the ability to produce the first office adding machine. Here is an excerpt … Boyer. His chief assistance came from a young man who introduced himself as Alfred Doughty. By the time he got to …
… Introduction Every filmmaker—from D.W. Griffith to Steven … films with the Phantoscope. (The Kinetoscope had been invented in the late 1800s, and was a device that gave the … winding reel. The Phantoscope was the first projector to produce life-size images on screens. Acknowledgement Charles …
… Introduction Though he never finished high school, Orville … The verdict, confirming Orville's position that the Wrights invented controlled flight, came in 1914, when a discouraged … materials, the Wrights built a wind tunnel to measure the aerodynamic results of various scale-accurate miniature wing …
… that Re-Defined Road Safety When the automobile was invented in the 19th century, it changed transportation …