Physical properties are often characterized as intensive and extensive properties. An intensive property does not depend on the size or extent of the system, nor on the amount of matter in the object, while an extensive property shows an additive relationship.
Just as Apple regularly updates its iOS mobile operating system, the company also periodically updates its OS X operating system for its MacBook Pro computers. If you own a MacBook Pro, regularly updating your Apple laptop with the newest operating system is a great way to ensure that your device always has the latest apps, features, and security enhancements.
Another feature rumored to be included with the new MacBook Pro would be an OLED touch bar which is highly requested by most users. It seems that the future looks quite grim for the MacBook Air. Nonetheless, there are still few who are hopeful that Apple will still push through in continuing the Air lineup.