Misaka Sisters - Goggles

Touma Kamijou changes the subject by asking a *Sister* what her goggles do.

> "Nah, just talking to myself! Wh-what should I say—that's it! What are those tough military goggles for?"

> "Misaka doesn't have the skill to follow Onee-sama's different electric or magnetic fluxes, so this device is important
for visualizing them, as Misaka would explain thoroughly."

*A Certain Magical Index* Volume 3, Chapter 1, Part 3, Page 15