Oliver Lewis——Works at the International Renewable Energy Agency, Lives in Abu Dhabi, UAE.
DVDs can be manufactured with either one or two data layers. Single-layer discs hold 4.7GB, and are also known as DVD-5s. Double-layer discs hold 8.5GB, and are thus called DVD-9s.read more >>
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.