Scottish inventions and discoveries solely to the subject, as well as scores of websites listing Scottish inventions and discoveries with varying degrees of science. Even before the Industrial Revolution, Scots have been at the forefront of innovation and discovery across a wide range of spheres. Some of the most significant products of Scottish ingenuity include James Watt's steam engine, improving on that of Thomas Newcomen, the bicycle, macadamisation (not to be confused with tarmac or tarmacadam), Alexander Graham Bell's invention of the first practical telephone, John Logie Baird's invention of television, Alexander Fleming's discovery of penicillin and insulin. The following is a list of
History of the telephone packets. In addition to replacing the traditional plain old telephone service (POTS) systems, IP telephony also competes with mobile phone networks by offering free or lower cost service via WiFi hotspots. VoIP is also used on private wireless networks which may or may not have a connection to the outside telephone network. History of the telephone This history of the telephone chronicles the development of the electrical telephone, and includes a brief review of its predecessors. Before the invention of electromagnetic telephones, mechanical acoustic devices existed for transmitting speech and music over a distance greater than that of normal direct