Meaning of インパクト in Japanese

The impact of Emmet's theory on physics has been widely discussed, but this is not my concern in this paper.

It is not my purpose to investigate the impact of Emmet's theory on biology.

That commercial makes a strong impression - especially the music. It stays in your head.

Forming an information infrastructure, the real impact of the information highway is an expectation of new economic development due to a shift from a tangible hardware-industry to brain-oriented software-industry.