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Scientist

Joseph Weber

1919-2000 · Physics, gravity, experimental physics
American physicist who first attempted the experimental detection of gravitational waves. He built the first resonant detectors (Weber bars) and claimed to have registered signals, sparking years of controversy. Although his results were not confirmed, he laid the foundations of experimental gravitational-wave astronomy.

Biography

Studied at the US Naval Academy, received his doctorate from the Catholic University of America. Taught at the University of Maryland. In the 1950s, he became interested in general relativity and the predicted gravitational waves. From the early 1960s, he built massive aluminum cylinders to capture ultra-small vibrations. In 1969, he announced the detection of waves, but other laboratories could not reproduce the result. Despite criticism, he continued to improve detectors. His ideas inspired the creation of the LIGO facilities, which in 2015 confirmed the existence of gravitational waves.

Key discoveries

💡 Weber's first detector was so sensitive that it registered vibrations from a truck passing a mile away. For isolation, he installed the device in an abandoned railway tunnel.
"He described gravitational waves as a new way to listen to the universe."
Concepts
gravitational wavesgravityLIGOspacetime curvature
Laws
Einstein field equations
Scientists
Henri PoincaréRobert HookeFritz ZwickyJacob BekensteinRainer WeissCharles TownesStephen HawkingKarl Schwarzschild

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