Definition of 'Moore's Law'
An observation made by Intel co-founder Gordon Moore in 1965. He noticed that the number of transistors per square inch on integrated circuits had doubled every year since their invention. Moore's law predicts that this trend will continue into the foreseeable future.
Although the pace has slowed, the number of transistors per square inch has since doubled approximately every 18 months. This is used as the current definition of Moore's law.
Investopedia explains 'Moore's Law'
Because Moore's law suggests exponential growth, it is unlikely to continue indefinitely. Most experts expect Moore's law to hold for another two decades. Some studies have shown physical limitations could be reached by 2017.