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
Tin can telephone as to avoid coming into contact with the object around which the signal is to be directed. Tin can telephone A tin can telephone is a type of acoustic (non-electrical) speech-transmitting device made up of two tin cans, paper cups or similarly shaped items attached to either end of a taut string or wire. It is a form of mechanical telephony, where sound is converted into and then conveyed by vibrations along a liquid or solid medium, and then reconverted back to sound. Before the invention of the electromagnetic telephone, there were mechanical acoustic devices for transmitting spoken words and