The general theory of relativity can be conceived onlyas a field theory.
It could not have[been] developed if onehad held on to the view 
that the real world consists of material pointswhich move 
 underthe influence of forces acting between them.
AlbertEinstein,  in his last scientific paper (December 1954).

• Changes in the quadrupole moment of mass  cause gravitational waves.
• The energy carried by G-waves  first betrayed their actual existence  (1974).
• PDH technique.  Optical stabilization of the frequency of laser light  (1983).
• LIGO:  Laser Interferometer Gravitational-wave Observatory (since 1992).
• 2017 Nobel Prize  for the detection of gravitational waves by  LIGO.

Related articles on this site:

• Waves.
• Physics.
• Curvature.
• Special Relativity.
• General Relativity.
• Newtonian Gravity.
• The Arrow of Time.
• Lasers. Gaussian Beams.
• Fabry-Pérot interferometer.
• Detecting a single graviton is an impossible task.
• Galaxies  and the large-scale structure of the Universe.
• Cosmology 101:  Studying the physical Universe as a whole.
• Linearly independent components  of the Riemann curvature tensor.
• Things that aren't vectorial  because they are not defined intrinsically.

Phys 237at Caltech  (2002) by Kip S. Thorne  and,  in order of appearance: Sterl Phinney  [12,12b,13,13b,15,15b],  Alessandra Buonanno  [...14b,26]
Lee Lindblom  [17,17b], Mark Sheel  [18,18b], Alan J. Weinstein  [21,21b],
Phil Willems thermal noise  [22,22b], Erik Black control theory  [23,23b], 
Matt Evans  [24], Riccardo DeSalvo seismic attenuation  [24b], 
Barry C. Barish project management  [25,25b], Yanbei Chen  TA  [26b], 
John Armstrong of JPL  [27,b,34,b], Albert Lazzarini data analysis  [28,b],
Ronald Drever  [29b], William O. Hamilton  (LSU) bar detectors  [30,30b,S], 
William Folkner (JPL) LISA  [31,31b,35], Robert Spero (JPL) optics  [32,32b], 
Bonny Schumaker  (JPL) disturbance reduction  [33,33b],
Marc Kamionkowski CMB polarization  [35b].
First Term :  (1) |(2) |3,b |4,b |5,b |6,b |7,b |8,b |9,b |10,b |
11,b |12,b |13,b |14,b |15,b |16,b |17,b |18,b |
Second Term :  19,b |20,b |21,b |22,b |23,b |24,b |25,b |26,b |
27,b |28,b |29,b |30,b,S |31,b |32,b |33,b |34,b |35,b |
Production  (and homework solutions)  by Mihai Bondarescu  & Yanbei Chen.

Other Videos :

Gravitational wave astronomy  by Martin Hendry  (TEDx Glasgow, 2014).
 
Have Gravitational Waves Been Detected?  by Matt O'Dowd  (2015-10-22).
First Detection of GW.  Press Conference :  Part 1 &Part 2   (2016-02-11).
Live News Stream   (University of Florida, 2016-02-11).
LIGO Detects Gravitational Waves   (MIT, 2016-02-11).
Brian Greene Explains Gravitational Waves   (2016-02-11).
What will we learn from G-waves?  by Gabriela González  (2016-02-11).
LIGO's First Detection of Gravitational Waves. Matt O'Dowd  (2016-02-11).
Einstein's Gravitational Waves Discovered. TDC  (2016-02-13).
 
What the discovery of gravitational waves means by Allan Adams  (2016-02).
Gravitational Wave Discovery[2] Sixty Symbols  by Brady Haran  (2016-04-21).
A New Era of Astronomy Begins.  World Science Festival  (2016-06-04).
Les ondes gravitationelle et leur détection by Pierre Connes  (2016-06-04).
Gravitational Waves by Brian Lantz  (Public Lecture at SLAC,2016-05-24).
 
LIGO Again Detects Gravitational Waves  (MIT, 2016-06-15).
We Found Gravitational Waves... Again  (DNews, 2016-06-15).
LIGO's Second Confirmation of GW.  Matt O'Dowd  (2016-07-20).
 
Golden Cubes and Gravitational Waves  eLISA  (Sixty Symbols,  2016-09-16).
UW Frontiers of Physics Lecture (1:32:49) by Dr. Rainer Weiss   (Fall 2016).
Gravitational Waves Are Awesome  by Dominic Walliman  (2016-12-30).
Absurdity of Detecting GW with Rana Adhikari   (Veritassium,  2017-01-05).
Reaction to GW detection from Rana X. Adhikari   (Veritassium,  2017-01-05).
Rethinking Reality (51:54) by Sam Gralla   (UA,  2017-02-13).
Jerome Gauntlett  (RI,2017-09-29).
The Killernova  that Transformed Astronomy by SpaceRip   (2017-11-13).
Gravitational Waves Report (2:02:30) by Kip Thorne   (2018-04-15).
Using Stars to See Gravitational Waves (12:46)  by Matt O'Dowd  (2018-04-18).
Future of Gravitational Wave Astronomy (49:47) Rai Weiss et al.  (2019-08-08).