Samuel

About ten hours later, Chen Chen stood outside the X-ray room of the research institute, looking over the X-rays in his hand.

Most of the X-rays were blank while some of them displayed only a dot so tiny that it could easily be missed.

These were the images of the STEM chip under X-ray.

X-rays were a type of electromagnetic radiation but its waveband covered a wide range of 0.001nm to 10nm. It lay between ultraviolet rays and gamma rays on the electromagnetic spectrum and the corresponding energy ranged from 125eV to 125keV.

Those in similar professional fields often referred to X-rays with a wavelength between 0.001nm and 0.1nm as hard X-rays whereas those with wavelengths above 0.1nm were called soft X-rays.