Crackerjack means that he (or she) is good at what they do - its Australian slang for "very good" or "rocking" etc. Example: "Bob fixed my blown apart engine in no time! He's a crackerjack mechanic...
Mechanics means "one thing follows another in a logical chain". Mechanics is not a physical term in the first place, but a logical term. When something happens, it has consequences, and the joint...
The English term 'mechanic' has a few uses: 1: a craftsman skilled in operating machine tools; 2: someone whose occupation is repairing and maintaining automobiles; 3: resembling the action of a...
Taken from Britney Spears Guide to Semiconductor Physics (which is linked below): "Prince Louis De-Broglie, hypothesised that if waves could exhibit particle-like properties, then might particles...