“Exactly. Do you get the point?”
“No.”
“It is this. What you see is merely energy. Your eye is merely a machine. It catches certain colours. Which in turn are merely rates of vibration. There is nothing to matter but force, Harry; if we could get down deep enough and know a few laws, we could transmute it.”
“What has it to do with the occult?”
“Merely a fact. The eye machine catches only certain vibration speeds of energy. There are undoubtedly any number of speeds; the eye cannot see them.”
“Then this would account for the Blind Spot?”
“Exactly. A localised spot, a condition, a combination of phenomena, anything entering it becomes invisible.”
“Where does it go to?”
“That's it. Where? It's one of the things that man has been guessing at down the ages. The professor is the first philosopher with sound sense. He went after it. It's a pity he was trapped.”
“By the Rhamda?”