Tidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occures in free fall towards a mass and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry.alvarogz said:Anybody could explain me the difference between tidal forces and gravitational waves?
Huh? We observe tidal forces every day. They are responsible for the tides, both the ocean tides and the Earth tides. They are also responsible for the gravity gradient torque that act on artificial satellites.timmdeeg said:Tidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occures in free fall towards a mass and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry.
(my bold)timmdeeg said:Tidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occures in free fall towards a mass and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry.
No, he didn't.alexg said:I think he just reversed Tidal gravity with gravity waves.
Tidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occures in free fall towards a mass and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry
alexg said:What you are describing here is gravity waves, not tidal forces.Tidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occures in free fall towards a mass and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry
Tidal effect in the Scwarzschild spacetime, for instanceTidal forces are usally described as the deformation (stretching and squashing) of a bunch of freely falling test particles. This occurs in free fall towards a mass ...
... and periodically in the transverse plane of a gravitational wave passing by, the plane perpendicular to the direction of the propagation of the wave. There is confidence that this tiny effect will be measured by means of laser interferometry
And you will be squashed perpendicular to the free fall direction. The two effects, stretching and squashing cancel each other, so the distortion doesn't change the volume.jedishrfu said:If you fall into a BH you will be stretched out like taffy due the gravity gradient between feet and head. This is called a tidal effect.
Gravitational waves are a form of energy that travels through space, caused by the acceleration of massive objects. They are ripples in the fabric of spacetime, predicted by Einstein's theory of general relativity.
Gravitational waves are detected using specialized instruments called interferometers, which measure tiny changes in the distance between two objects caused by the passing of a gravitational wave. The first detection of gravitational waves was made in 2015 by the LIGO interferometer.
The detection of gravitational waves confirms the existence of these ripples in spacetime, providing evidence for the theory of general relativity. It also opens up a new window for observing and studying the universe, as gravitational waves can reveal information about massive objects such as black holes and neutron stars.
Tidal forces are the result of the gravitational pull of one object on another, causing a distortion in the object's shape. This is most commonly seen in the tides on Earth, which are caused by the Moon's gravitational pull on our planet.
Tidal forces can cause objects to stretch or compress, depending on their distance from the source of the gravitational pull. For example, the Moon's tidal forces cause the oceans on Earth to bulge, creating high and low tides. In extreme cases, tidal forces can even tear apart objects, such as when a star gets too close to a black hole.