Who is the inventor of bulb?
Joseph Wilson Swan was the inventor of bulb using a carbon paper filament in his bulbs and patented it in 1878. Thomas Edison, in 1879, introduced by carbonizing a piece of sewing thread and in 1880 he got patent on it. Who is the inventor of clock? The word clock is derived from the French word cliche which means bell. Though historical records say it has been used since more than 5000 years before, the first mechanical alarm clock was invented by Levi Hutchins of Concord, New Hampshire, in 1787. Who is the inventor of camera? Ibn al-Haytham, an Iraq scientist invented the first camera in 1015. In 1660s, Robert Hooke and Robert Boyle invented a portable camera. For general photographs, a sophisticated and portable camera was invented by Johann Zhan in 1685. James clerk Maxwell took the first color picture in 1861. Who is the inventor of calculator? To perform mathematical calculations, a device called Calculator was invented. Mechanical calculator was introduced by Blaise Pascal in 19
