Bob the Gunslinger wrote:Right. I figured that lasers were fighter-sized/"caliber" turbolasers (not coherent light, but just a jargon word for what comes out of a SW gun barrel), but I wasn't sure if maybe blaster cannon used a different operating function, since they seem to be specifically used in an atmosphere/on land vehicles.
Well, I think the Guide to Vehicles and Vessels, by Bill Smith, describes some small ships as having "blaster cannons", but I generally take the Essential Guides with a very large grain of salt, seeing as they're mainly inspired by the WEG stats. I don't really think blaster cannons use a different projectile or whatever; the only difference is in power, and possibly in guiding the shots (although I don't believe I recall seeing shots change direction... I've never watched the movies on DVD though, so I don't know).
So it is entirely based on the size or output of the weapon?
Well, I don't know for sure, but as a rule of thumb, yeah. However, bear in mind that this may not be entirely accurate-- for example, snowspeeder guns are at least as long as X-wing laser cannons, but they obviously have less power. It just depends on the particular weapon, is all, I reckon...
Of course, it's obvious enough that as size goes up, so also does power and amount of damage, but this only applies to the cannons. Hand blasters can have plenty of damage per shot despite their size; Han's blaster isn't much bigger than a large pistol, but it can blow out the proverbial torso-sized chunks in concrete. Other hand blasters, despite being larger than Han's gun, have less power (stormtrooper carbines). But when one thinks about it, it makes sense-- some pistols have more power than many rifles (Desert Eagles, for instance). Han's a smuggler; he needs to be certain that his shots will get a guy down, and keep him down. There's a pretty good bit on hand blaster power in Darth Wong's main site.
As for the rest of your questions, well, what's this board for but providing answers, eh?

It's a strange world. Let's keep it that way.