The Clone Wars open with an
exhibition of Star Wars weaponry. We see weapons ranging from hand
weapons to fighter-grade cannon to heavy-duty weapons used against
capital ships.
Particularly interesting is a unique planar weapon, the seismic charge.
The seismic charge has a highly focused planar blast effect; it has a
yield comparable to modern strategic nukes packed into a tight band of
destructive effect.
The
Slave I is also equipped
with gigajoule-range weaponry, with a total offensive weapon output of
up to 0.2 kilotons per second.

Although individual shots
Mobile ground weapons of great power are also seen; gunships look
almost ready to compete with fighters for beam firepower, while giant
walkers threaten to provide heavy-duty multi-megaton firepower.

The seismic
charge is roughly the
size and shape of a coffin. Its destructive
ring-shaped shockwave violently shatters and heats asteroids.
The
potential destructive radius is quite high, although destructive
effects are limited to a few meters from the wave. A seismic charge
used by Jango Fett in
AOTC shattered a number of asteroids, some of which may have been
several up to hundred meters in diameter. Limited melt effects were
also
present; the shockwave appears physical in nature.
The overall yield of the seismic charge may be calculated by estimating
the volume of rock the blast wave
could
shatter. We may estimate the depth of rock the wave can shatter as
between 1-5 km (1 km is roughly the upper limit of rock seen shattered
onscreen, 5 km is roughly the total distance traveled), this can be
broadly estimated as 60-1,500 kilotons.

The
Slave I is observed firing
its main guns at a high rate in pursuit of a Jedi starfighter. One such
strike demolishes a piece of asteroid roughly 5-10 meters across,
breaking it into fiery fragments.
The
flame-filled blast seen can easily be approximated with a few tons of
dynamite by modern demolition engineers, suggesting a blast of 5-35
gigajoules. The
Slave I has
an impressive firing rate of 10-20 shots per second; this suggests
that the Slave I can dump between 50 and 700 gigawatts through its beam
weapons.
The
Slave I is also seen
firing on a landing platform. A burst of fire marked the explosion of
its impact, which threw - but did not injure - a human Jedi. This
suggests a substantially less powerful strike than used against the
asteroid - somewhere in the megajoule range.

Large
cannon-mounting walkers demonstrated the effectiveness of heavy
ground-to-air firepower during the battle at Geonosis.
We may suggest
these to be comparable to the weapons of capital ships; a few hits can
disable Trade Federation sphere ships, commonly understood to be the
central spherical portions of the massive Trade Federation battleships.
The beams appeared powerful enough to require recoil compensation,
built into the structure of the giant walkers.
Recoil of 10
8-9 kgm/s (plausible given the size of the
walkers) would
suggest a beam of 7.1-71 megatons for an EM or near-light kinetic
weapon.
The absence of nuclear-grade fireballs, or measurable change in the
velocity of the substantially more massive sphere ships, confirms that
the weapons are no more powerful than this.