- anton1792
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- Noble Legendary Member
"Find where the liar hides, so that I may place my boot between his gums!" - Rtas 'Vadum
I think I agree with Yeash. The Energy Projector = Excavation Beam (or Glassing Beam) seems to be a misconception.
As for their approach to glassing, when in orbit the plasma originates from their lateral lines, which is also where plasma torpedoes come from. Fred at the beginning of FS also notes this; a plasma torpedo was fired and caused a massive explosion on the horizon.
The excavation beam seems to be used for, well, digging basically. Maybe used to destroy underground fortifications perhaps, and to excavate Forerunner goodies. So I think it would be a concentrated beam (for vaporising rock), but does not result in huge area of effect damage.