predictions

Einstein's predictions for gravity have been tested on the largest possible scale

Einstein’s predictions for gravity have been tested on the largest possible scale

According to the standard model of particle physics, the universe is governed by four fundamental forces: electromagnetism, the weak nuclear force, the strong nuclear force and gravity. While the first three are described by quantum mechanics, gravity is described by Einstein’s theory of general relativity. Surprisingly, gravity is the one that presents the greatest challenges …

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Internal energies of laser fusion do not match predictions

Internal energies of laser fusion do not match predictions

Enlarge / Where the action takes place inside the National Ignition Facility. On Monday, a paper was published that describes some puzzling results from the National Ignition Facility, which uses many high-energy lasers focused on a small target to start a fusion reaction. Over the past few years, the facility has achieved key milestones, including …

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