An Introduction To Lasers And Their Applications -

He flicked off the main beam. The lab went dark, save for a single green laser level tracing a perfect horizontal line across their notebooks.

He smiled—rare for him.

“Tomorrow,” he whispered, “we teach it to cut cancer.” An Introduction To Lasers And Their Applications

“Exactly,” Aris said. “Because the laser is no longer a technology. It’s a condition of modern existence. Light, once wild and chaotic, now obeys us. We taught it to march in lockstep, and in return, it reshaped the world.” He flicked off the main beam

A student raised a hand. “So it stores the energy?” ” he whispered