Blog Post #6 EOTO1 React

 Blog Post #6    Write a regular short post about a technology that you learned about from someone else.

Ella’s presentation helped me understand the key differences between DVDs and CDs. Before her presentation, I thought they were the same thing. She explained that both are optical discs used for storing data, they serve different purposes. CDs primarily store audio files and have a maximum capacity of around 700 MB. DVDs can store more data (4.7 GB to 17 GB)making them best for video storage. Ella also demonstrated how DVDs use a smaller wavelength laser than CDs, allowing them to store more information in the same physical space somehow. The science of it is nuts to me. She also explained that DVDs have multiple layers of data, while CDs have only one layer. By the end of her presentation, I had a clear understanding of why DVDs are preferred for movies and large files, whereas CDs are mainly used for music and smaller data storage. Before this, I truly could not have told you the difference!