11. 1926 — Pacemaker
In 1926, the cardiac pacemaker was created by two Australian scientists, Mark C. Hill, and Edgar H. Booth, a physicist. In 1932, Albert Hyman built the first artificial pacemaker. This device used bipolar needles that were inserted into the heart, and the current was created by winding the machine manually. It wasn’t until the 1950s that the pacemaker would become more portable, but it still needed an electric outlet to operate making it only as mobile as a useful outlet would allow. A few years after, batteries would replace the need for an outlet but the permitted time frame was only 1,000 hours. Today, the pacemaker continues to make strides in improving the technology based on the original design, and this miraculous invention is credited for saving millions of lives.