Quantum Invariance and Gauge Theory rediscovering Electromagnetism and it's formerly unknown inner workings!

Much information contained within this video. Watch and learn...

Long and short:
They rediscovered electromagnetism without knowing that was what they were doing, and now they have a much more complete picture of how electromagnetism fits into existing equations and how it operates on the quantum level. This is very useful knowledge, literally...

Very powerful information discovered using gauge theory...