Most of the time the blade met only empty air; sometimes it did not.

When hot air meets cold air different weather effects happen.

Bell was about to take hold of Pucky but his hands met shimmering air.

But with a sense of shock Alex felt his foot meet only empty air.

When Kin lunged across the table her hands met empty air.

His hands met air, then the hard edge of the table.

Reith had already jumped away; Dordolio's blade met empty air.

It's where hot air meets cold air that things get interesting.

Auk reached for a place where he thought Dace might be, but his hand met only air.

He left the room so quickly that Anne's protest met thin air.