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Showing posts from April, 2013

Basic Principles of Engineering Economics Unraveled

Interest

Interest, is formally defined as the price paid for borrowing money or payment received for lending money, usually a percentage of the amount borrowed. My vocabulary defines it as the only reason why a sane person would allow someone else to touch his/her money (expenses for necessities and luxuries aside of course). Without interest, the global economy won't function. Companies won't be able to sell their stocks, no investments will occur, no one would be able to borrow money because no one is INTERESTed to lend their money, etc. In this article, I'll freshen up on the very basic principles that govern interest, and then introduce a conceptual analysis for each.

Before we start with simple interest, let us first discuss an even simpler topic that I believe is taken too much for granted that some errors in academic exams are effectuated by such. Interest is the price paid for borrowing money, but it can be a payment that is paid at a constant value, or a payment tha…

The Importance of Obsolete Technology Unraveled

Most of the time, when lay men are asked what they think of the latest trends in technology and their opinions on the ones that are about to hit the recycling bin, a typical response would be that the usefulness of the new products far outweigh the former. This view is so common it has become an irreversible stereotype. The effects of course are very visible. We see a huge almost exponential demand on the "new" product and the exact inverse on the demand of the "obsolete" one. Electronics practitioners tend to find it highly unnecessary to study old technologies and instead focus on the new. Anything related to anything outside the new is considered ancient and negligible.

Let us take a closer look at exactly how technology evolved from then and now (I won't be tackling much of the earlier 1800s since I've pretty much covered enough on the topic on one of my previous posts). Perhaps one can remember of the old black and white television set and the vacuum tu…

The Explosively-Pumped Flux Compression Generator Unraveled

When I was still a 2nd year college student 3 years ago, I came upon an article containing information about the e-bomb as a possible means of achieving the goals of a terrorist. First of all, an e-bomb is, from its name, a bomb. But the first two characters so often used and encountered in our day-to-day routines, such as e-mail, e-book, etc. changes the story. An e-bomb is a bomb on the electronics level, that is, it targets the destruction of electronics equipment, specially those with a low power rating. How does it do it? Simple. It  puts to good use one of Maxwell's equations, that is, a changing magnetic flux induces an electric field. And if this induction is done on a magnitude a hundreds of times greater than the contemporary, the electric field can
impress a potential way above the power rating of ordinary electronics, thus frying them to uselessness.

The e-bomb is essentially an explosively-pumped flux compression generator, typically referenced as an EPFCG or HEMP ge…