Eddington Expedition

29/05/1919View on timeline

How an Eclipse Proved Einstein Right
Original Caption: In Plate 1 is given a half-tone reproduction of one of the negatives taken with th...

On May 29, 1919, a total solar eclipse provided the ideal opportunity to experiment something predicted by Einstein's General Theory of Relativity: a small change in the position of stars around the sun, which is usually impossible to be seen due to the sun's brightness. Two different expeditions were organized: Arthur Eddington and Frank Watson Dyson travelled to the Island of Principe, and Andrew Claude de la Cherois Crommelin and Charles Rundle Davidson travelled to Sobral, Brazil.

The blue belt shows the regions where the eclipse was totally visible; both the island of Principe a...
Read the full original report of the expedition:A Determination of the Deflection of Light by the Sun's Gravitational Field, from Observations Made...
Sir Arthur Stanley Eddington (1882–1944) was an English astronomer, physicist, and mathematician of...

Sir Arthur Stanley Eddington on Wikipedia



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Published in 10/04/2019

Updated in 19/02/2021

All events in the topic Scientific developments:

Invalid DateEddington ExpeditionEddington Expedition
Invalid DateThe telescope first aims at M87 galaxy center
Invalid DateKatie Bouman's TED Talk
Invalid DateDiscovery of the M87 galaxyDiscovery of the M87 galaxy
Invalid DateCreation of the Event Horizon Telescope (EHT)
Invalid DateJohn Michell first imagined "black holes"John Michell first imagined "black holes"
Invalid DateKarl Schwarzschild solves Einstein's equationsKarl Schwarzschild solves Einstein's equations
Invalid DateExistence of black holes is confirmed
Invalid DateDense mass at the center of M87 galaxy is theorized
Invalid DateFirst accurate measurement of gravitational redshiftFirst accurate measurement of gravitational redshift
Invalid DateShapiro time delayShapiro time delay
Invalid DateGravity Probe A confirms gravitational time dilation
Invalid DateFirst successful mm-VLBI observations
Invalid Date1.3 mm VLBI observations between IRAM telescopes
Invalid DateVLBI observations at 147 GHz
Invalid DateGravity Probe B confirms frame dragging
Invalid DateLIGO first detects gravitational wavesLIGO first detects gravitational waves
Invalid DateKatie Bouman's talk at Caltech