IF has various meanings in the NASA category. Discover the full forms, definitions, and usage contexts of IF in NASA.
Is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception.
NASAElectromagnetic radiation of wavelengths between 7500 A, the limit of the visible light spectrum at the red end, and centimetric radio waves.
NASAThe boundary between any two phases. Among the three phases (gas, liquid, and solid), there are five types of interfaces: gas-liquid, gas-solid, liquid-liquid, liquid-solid and solid-solid. A collection of operations that are used to specify a service of a class or a component. alsoclass, port type. 2.A shared boundary between independent systems. An interface can be a hardware component used to link two devices, a convention that supports communication between software systems, or a method for a user to communicate with the operating system, such as a keyboard.
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