Basically, fog forms when warm air meets colder air. When this happens, water vapor in the air â a gas â is cooled enough for the gas to turn to a liquid in the form of tiny water droplets. This process is called condensation.. We see those groups of tiny droplets as clouds or, when they're close to the ground, as fog.
What is a 'Cryptocurrency'. A cryptocurrency is a digital or virtual currency that uses cryptography for security. A cryptocurrency is difficult to counterfeit because of this security feature. A defining feature of a cryptocurrency, and arguably its most endearing allure, is its organic nature; it is not issued by any central authority, rendering it theoretically immune to government interference or manipulation.
Digital currency, however, is a form of virtual currency that is electronically created and stored. Some types of digital currencies are cryptocurrencies, but not all of them are. So that leads us to the more specific definition of a cryptocurrency, which is a subset of digital currencies that uses cryptography for security so that it is extremely difficult to counterfeit. A defining feature of these is the fact they are not issued by any central authority.