From the post "High Frequency EMW From Laser" dated 31 Jul 2015 and post "Squeeze Laser" dated 28 Jul 2015, a material will give off both photons and EMWs when hit and deformed. The particles within it oscillating at \(\small{\theta=45^o}\) is moved to \(\small{\theta=43.535^o}\). The energy stored while oscillating at \(\small{\theta=45^o}\) is released at maximum intensity.
The EMWs emitted could account for sparks (charge flow) when metal are hit. And the photons released account for the flashes seen.
