Question

Fill in the Blank :
Blue-Violet Laser Beam is used to read and write a ________ .

Answer 1

Answer:

In the blue laser technology, the special material is gallium nitride . Even a small shortening of wavelength of light can have a dramatic effect in the ability to store and access data. A shorter wavelength allows a single item of data (0 or 1) to be stored in a smaller space.