Proof of concept, also known as proof of principle, is a realization of a certain idea, method or principle in order to demonstrate its feasibility, or viability, or a demonstration in principle with the aim of verifying that some concept or theory has practical potential. A proof of concept is usually small and may or may not be complete.
Proof of concept testing of oil cleanup equipment
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. Physical prototyping has a long history, and paper prototyping and virtual prototyping now extensively complement it. In some design workflow models, creating a prototype is the step between the formalization and the evaluation of an idea.
Prototype signage on the Boise Greenbelt, testing for rust, paint-fastness, durability, etc.
A sign explaining prototype signage
A prototype of the Polish economy hatchback car Beskid 106 designed in the 1980s
A simple electronic circuit prototype on a breadboard
