Archive for 'July 2009'

Intro to Gear Ratios

by Kevin C. on Jul 15, 2009

A few days ago, a co-worker asked me if I could help him with some gear ratio calculations. This will be a great opportunity to brush up on gearing. Well, let’s start with a little basics. The concept of gears only works directly between two gears. If you have 3 gears whose teeth are locked, [...]

How Does ABS Work? It’s the Static Friction

by Kevin C. on Jul 14, 2009

You drivers out there have probably heard of the ABS in your car (at least, if you are driving a car, you had better know about it!). ABS stands for “Anti-lock Braking System,” which should never be written as the “ABS system.” This is not a post about how ABS works, but rather one about [...]

Twitter Weekly Digest for 2009-07-10

by Twitter on Jul 10, 2009

Hey, hey, the automated Twitter Tools for http://engineerography.com worked! Nice. # Robot hummingbird? http://bit.ly/18W5U4 # Happy 233th Birthday, America! # Whoops, I think I knocked our blog offline for a little bit there. It's back up though! # RT @AdamPo: OH An optimist says the glass is half-full; the pessimist, half-empty; the engineer says the [...]

“Engineer”: Origins of the Word

by Hans F. on Jul 9, 2009

We hear the word “engineer” often in our everyday lives, but where does the word come from? According to the Online Etymology Dictionary, the word dates back to the year 1325 in the form of the Old French word engigneor, which means “constructor of military engines.” Let’s take a moment to think about history. Back [...]

Engineering is Mostly All Greek to Me

by Kevin C. on Jul 8, 2009

It’s no surprise that engineering (also science and mathematics, for that matter) uses a heck of a lot of Greek letters to represent concepts and variables. English, for example, has only 26 letters in the alphabet (actually, the Roman alphabet). When we talk about things like diameter, density, degrees of freedom, and displacement, a single [...]