"You said that 'the only thing your Stand can do is make things invisible in dark places'," Lelouch said. Behind him, the Stand itself gave an exaggerated sweeping bow. "That is the end result, but it's not quite everything it does. It also allows me to make things unaffected by infra-red, which is outside the visible portion of the electromagnetic spectrum."

The Prince strode across the kitchen, right past them. And when the terrorists saw what he was approaching, what he was switching off and that this something was on their left side they realised the real nightmarish trap he had lain for them. From the very moment they had entered the room he could have killed them at any time. Switching on the taps, opening drawers and cupboards, switching on all the appliances! He was taking advantage of another form of "hiding". Namely, hiding in plain sight. Hiding his real intention in a crowd of other actions!

"And of course, the same also applies to…" Lelouch said, reaching up and switching off a special appliance that was, in part, an oven but also - "Microwave radiation."

It made a sick sense, if you thought about it for a moment. After all, the Guren's Radiant Wave Surger initiated its attack by discharging concentrated microwaves through its palm, superheating the enemy in moments and thoroughly destroying even the strongest Knightmares in seconds by causing them to swell up and explode in exactly the manner that they are not designed to do. It makes sense that Lelouch would become interested in such a thing after seeing it in action. After seeing it be so terribly effective on the battlefield.

By making selective portions of the oven exterior "invisible to microwaves", Lelouch could easily bypass the extremely reliable safety measures built into all such devices to prevent exactly what he was causing. By making the area small enough, he could make a sort of heat beam to concentrate the effect on a single area at a time, much as he had done with the batteries within the flashlights. Heating the reactive chemicals within to make them explode, and starting from the back to remove the protection of light from the others.

From there, it was a simple process for him. With the room cast in darkness, Lelouch could pick and choose the exposure levels and where to aim them. Keeping himself safe while exposing the terrorists to the full effect, and as surely as microwave ovens will heat the water in any item placed inside them released microwaves will equally heat the water contained within human flesh!

-Lulu's Bizarre Rebellion Chapter 29