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Although Wynne's invention was based on earlier puzzle forms, such as the word diamond, he introduced a number of innovations (e.g. the use of horizontal and vertical lines to create boxes for solvers to enter letters). He subsequently pioneered the use of black squares in a symmetrical arrangement to separate words in rows and columns.
The housing of the bell box may be manufactured from wood, metal, or plastic. The basic core component of a conventional bell box is an electromagnet and a bell or other metal piece, some of which create a repetitive sound. [1] The bell sound is normally created inside the box, although the unit may have bells mounted on the outside of the box.
Russian engineer Pavel Yablochkov invented the electric carbon arc lamp. 1876: Scottish inventor Alexander Graham Bell patented the telephone. 1877: American inventor Thomas Edison invented the phonograph. 1877: German industrialist Werner von Siemens developed a primitive loudspeaker. 1878: First electric street lighting in Paris, France 1878
The electric guitar was a key instrument in the development of musical styles that emerged since the late 1940s, such as Chicago blues, early rock and roll, rockabilly, and 1960s blues rock. Electric guitars are used in almost every popular music genre. [239] U.S. patent #2,089,171 was filed by Beauchamp on June 2, 1934, and issued on August 10 ...
Arnold O. Beckman (1900–2004), U.S. – electric pH meter; Vladimir Bekhterev (1857–1927), Russia – Bekhterev's Mixture; Josip Belušić (1847–1905), Croatia – electric speedometer; Michael Bell (born 1938), together with Melanie Chartoff (born 1950), U.S. – a gray water recycling device for reuse of shower and sink water in the home
The modern electric bell mechanism had its origin in vibrating "contact breaker" or interrupter mechanisms devised to break the primary current in induction coils. [5] Vibrating "hammer" interrupters were invented by Johann Philipp Wagner (1839) and Christian Ernst Neeff (1847), and was developed into a buzzer by Froment (1847).
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He was then hired by Alexander Graham Bell, who was then a professor at Boston University. They were known for the invention of the telephone. Watson had the distinction of receiving the first ever telephone call (from Bell in the next room) and hearing his name as the first words ever spoken over the phone. "Mr.