Who invented the first medical pacemaker? Who invented the first blood transfusion? Who invented the first telephone? Who invented the first wheelchair? Who invented the first website? Who was the first nurse in the world? Who invented the first vaccine?
Who invented the portable x-ray machine? Who invented the fax machine? Who invented the scanning electron microscope? Who invented the first medical pacemaker? Who invented the digital calculator? Who invented the first calculating machine?
【推荐2】A team of researchers at Harvard University and Emory University have created a school of robotic fish. They can swim by recreating the contractions (收缩) of a pumping heart. Researchers say the experiment could advance pacemaker (心脏起搏器) technology and improve the development of ar...
Who invented the medicine pill?The Medicine Pill:A German by the name of Andreas Berthold processed terra sigillata in Poland in 1800s. A terra sigillata was a mixture of clay and goat's milk and then shaped into a pill that was believed to cure every sort of illness. It was dated ...
Who invented the first dishwasher? Who invented the welding machine? Who invented the first rocket that went into space? Who invented the simple electric motor? Who invented the first battery? Who invented the first medical pacemaker? Who invented the first gatling gun? Who invented the first co...