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LED lights in cargo ship
Starting around 2001, the compound semiconductor gallium nitride fomented a revolution in lighting that has been, by some measures, the fastest technology shift in human history. In just two decades, the share of the global lighting market held by gallium-nitride-based light-emitting diodes has gone from zero to more than 50 percent
I donno if We have figured out Kelp varieties that could grow in Deep oceans vs Shallow coastal shorelines.
An old chum was the navigator on a bulk carrier. Only used GPS to confirm his astronomical sightings, because one day, the electronics will fail but the stars and his mechanical watch will still be going round.
The key to GPS reliability is multiple obsolesance
They use this thinking on aircraft.
AFAIK the stars have been in pretty much the same position for a few billion years
Quote from: alancalverdAFAIK the stars have been in pretty much the same position for a few billion yearsA slight exaggeration there.