Traces of the Development of Science and Technology(1) ÷ln1800,first battery In 1814,steam locomotive,photograph In 1827,matches,microphone In 1829,typewriter. In 1830,sewing machine In 1834 an early refrigeratorTraces of the Development of Science and Technology(1) ❖ In 1800 , first battery ❖ In 1814 , steam locomotive,photograph ❖ In 1827 , matches , microphone ❖ In 1829 , typewriter. ❖ In 1830 , sewing machine ❖ In 1834 , an early refrigerator