A cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural pacemaker of the heart), is a medical device that generates electrical impulses delivered by electrodes to cause the heart muscle chambers (the upper, or atria and/or the lower, or ventricles) to contract and therefore pump blood; by doing so this device replaces and/or regulates the function of the electrical conduction system of the heart.
invented by MITS
Altair 8800 is the spark that ignited the microcomputer revolution.
invented by Stephanie Kwolek
Kevlar (para-aramid) is a heat-resistant and strong synthetic fiber, related to…
invented by James Martin
In aircraft, an ejection seat or ejector seat is a system designed to rescue…
invented by Ray Tomlinson
Electronic mail (email or e-mail) is a method of exchanging messages…
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