Wednesday, August 02, 2006

War of Currents

While in college, doing my B.Sc. Physics course, we were taught alternating and direct currents. The books prescribed to us weren't really great; they were designed to make us pass the exam. So I was always confused between these two types of currents.

Why the hell were we taught these? Was it just because there were two types of currents in this world, and hence they have to be taught? Or was it because one had an advantage over the other? I never knew.

Today, I was browsing through Wikipedia when I decided to end this discrepancy in my knowledge for ever. I began with AC and very soon stumbled upon War of Currents.

The article details a time in history when the supporters of AC and DC argued over which was better. It superbly explains the history behind the two forms of current, and why we use AC for most applications today.