This second apparent source of radio waves is the image antenna.

His apparent source turned out to be the real embezzler.

We have enough for now, but there's no apparent source in the future.

Simultaneously, a breath of cool air stirred through the room, without apparent source.

The man had no apparent source of income, but showed a bank balance of $40,000.

From no apparent source light flooded the room, like water in a tank.

The only apparent source of power at the time was water, which was in short supply on site.

A steady glareless light filled the room from no apparent source.

An orange glow sprang up in the air around him, without apparent source.

The assistant is now trapped underwater, with no apparent source of air.