In the Star Wars universe, there are both Laser based and Plasma based weaponry. Any weapon that is called a Laser IS A Laser based weapon i.e light speed. Eg. A "Turbo Laser" as mounted on Capital Star ships like a Star Destroyer is a bonafide laser weapon. Thus its shoots a beam of light.
A plasma weapon discharge would look nothing like a laser beam (or Hollywood style tracer) for that matter. A decent depiction of a plasma weapon would be as the one on the movie Predator (the shoulder mounted "Plasma Caster"). A "fat" mass of heavy super heated particles leaving a trail arc as it is "lobbed" towards its target. Plasma weapons would have relatively short ranges (because its damage is based on Heat, the further it has to travel, the cooler and thus more ineffective it would be), high lead time targeting, (almost like artillery), but do VERY HEAVY heat based damage.
Lasers in comparison, would have almost infinite range, almost no lead time targeting, but do substantially less damage). The Ultimate Lasers in Star-Wars (and any Universe for that matter) are called "Turbo-Lasers". They are incredibly powerful weapons that could vaporize a fully shielded ship in a single shot. Shooting a turbo laser at the ground for instant would have it penetrate all the way through down to solid rock (where it could be stopped due to great rock heat absorption). Like any weapon that is called a "laser", it travels at the speed of light, and thus cannot be dodged or evaded. (Unless the target can time travel).
The problem with Star Wars, is that the movies are done for "oohs and awes" effect. In a realistic space battle with laser weapons, you would not be able to see the lasers firing. So all the ships would be frantically maneuvering, but people would be confused because they couldn't see the "bullets" flying and thus sense the life threatening immediacy of the action. In other words, depicting the realistic capability of laser weaponry would be boring to a non-informed public.
Which bring us to now where people actually believe this is what laser warfare really looks like... Bullet Tracers... :(
Fredsas12
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