Evidence for dark matter is extensive, but we still don't know what particles produce its effects.

He showed that hadron-electron-photon showers and even single fast particles may produce sound pulses.

On passing through the detector gas, a particle will produce primary ionization along its track.

The particles could produce either effect, he said.

The particles produced immediately after the burst are small, with 90% of radiation activity present in particles below 300 nanometers.

The particles produce a scattering effect upon the component parts of white light.

The particles produced initially are invisible but become visible if the toast is burned.

Though mechanisms not yet entirely understood, these particles produce coherent beams of radio emission.

It occurred to the scientists that fine particles of silica gel alone, which is used commercially as a drying agent, might produce sounds.

Very small particles of ash, carbon, and other substances produced by manufacturing, refining, and mining operations.