Maj. Carter, Malek and others in “Unfinished Business”

Well, whoever it is, we're dealing with an enemy we can't see. Without TERs to counter that technology, we're helpless.

Do you have the means to generate a high-frequency electromagnetic field?

I could modify the wave output of the naquadah reactor.

Within a range of 400 to 700 nanometers?

That might just excite the phase particles enough to bring them into our visible light spectrum.

Carter?

Sir, the invisibility field must operate—

Are you about to tell me that you can make the invisible guy vi—

Yes, sir.

That's all I need.

If you can see it, you can shoot it.