There are four fundamental forces in the universe: gravity, electromagnetism, and the strong and weak nuclear forces. They have wildly different strengths, with gravity being the weakest and strong ...

For more than a century, physics has described nature using four fundamental interactions: gravity, electromagnetism, the ...

The Standard Model of Particle Physics accounts for four fundamental forces—strong, weak, electromagnetism, and gravity—but for decades, scientists have wondered if an elusive fifth force might be at ...