Lattice QCD method suggests a simpler spectrum of exotic XYZ hadrons
An elusive particle that first formed in the hot, dense maelstrom of the early universe has puzzled physicists for decades.
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Hybrid vs. electric cars: What's the difference?
The difference between hybrid and electric cars comes down to how the car is powered. A hybrid is powered by both an internal combustion engine (ICE) and an electric motor, with separate batteries for ...