Computer Science for IGCSE & O level - Hardware (Section 22 - No. 7)
What is the main advantage of using a blue laser in Blu-ray discs compared to a red laser in DVDs?
Faster data transfer rate.
Higher storage capacity.
Greater durability.
Lower cost.
Maelezo
The shorter wavelength of a blue laser allows for a greater density of data storage on the disc, thus increasing its capacity.