Agreed entirely; an upvote wasn't enough. Quantum Mechanics has been delivering the goods since their invention. While the maser surely is an explicit applicat

Agreed entirely; an upvote wasn't enough. Quantum Mechanics has been delivering the goods since their invention. While the maser surely is an explicit application of quantum mechanics, placing theoretical chemistry onto a solid physical framework may have had the greatest aggregate impact on humanity. From a scientific perspective, much of what we know about the universe requires spectroscopy. Everything we know about subatomic processes requires quantum understanding as a prerequisite. Quantum effects are so curious/clever that we should continue to expect interesting surprises into the foreseeable future.