Science, which is about the rules of the universe. Engineering is about the use of scientific rules to do or create something. Technology is the methods and processes to create wide spread applications of engineering.
E.g., science discovered electromagnetic radiation. Engineering developed ways to use electromagnetic radiation to transmit sound and data. E.g.,, a person in a lab built a device which used electromagnetic radiation. Technology is the methods and processes needed to create millions of phones from that first device.
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