Gravitational waves are 'ripples' in space-time caused by some of the most violent and energetic processes in the Universe. The strongest gravitational waves are produced by cataclysmic events such as colliding black holes, supernovae (massive stars exploding at the end of their lifetimes), and colliding neutron stars.
In principle, yes but, in reality, no, since gravitational waves which reach us are extremely week with long wavelengths.
JES
Stellan Gustafsson Thank you. Can you please suggest some articles regarding this matter?
I don't think there is any article treating this specific question but, you can find separate articles treating black hole gravitational gradients or gravitational wavelengths.
JES
If by feel you mean a sensation, the answer is no, but it can be measured by an instrument.
Carlos
LIGO laboratories have been recording gravitational waves since 2014
(2017 Nobel Prize in Physics)
It seems plausible that you would feel a gravity wave pulse as a time varying internal pressure change in your body. Of course the wave would have to be many many orders of magnitude stronger than anything recorded by LIGO,...
Gravitational waves arise by the condition that gravitational field is non-stable. Gravitational waves are linked with 4-curvature of the space-time. In other words, GW are linked immediately with the structure of space-time. They depend on th gravitational potential and the velocity of rotation of 3-space. Calculations in frames of GR show that gravitational attraction is linked with positive sign of 4-curvature, the gravitational repulsion is linked with negative sign of 4-curvature (quickly rotating pulsars, for example)
Gravitational waves are formed by any object that has mass. But they merge with the background until they are shaken (its outbreaks).
LIGO records these outbreaks.
" Gravitational waves are 'ripples' in space-time caused by some of the most violent and energetic processes in the Universe. "
Those are coherent gravitational waves caused by coherent motion of a tremendous number of elementary particles. But also, incoherent small gravitational waves exist. The overlay of many incoherent gravitational waves has the quality of a gravitational field. The density gradient of a flow of incoherent gravitational waves can be felt like a gravitational field.
The oscillation frequency of the waves of the gravitational field of the Universe is 7.4 * 10 ^ 42 Hz. Further you can find all its wave parameters.
All other space objects have a different frequency.
Dear Valentyn Nastasenko
Where does this extremely high frequency come from? This frequency corresponds to a wavelength of about 0.4*10-38m. What is the physical background of your astonishing statement?
We can feel GW as changes of temp of the observed time. These changes depend on the gravitational potential of gravitating source and from the velocity of rotation of gravitating body. Material body n the stable state radiates in the stable regime and we can register GW only by non-stable field. There exist two non-observable states of gravitating body: 1) gravitating field is so great that falling to the source body reaches the light velocity; 2) gravitating body rotates with the light velocity. Physical observer cannot measure these phenomena. The first case is collapse caused by maximal force of attraction), the second case is maximal state of gravitation of repulsion. We live in the fields of gravitation of attraction, but we can observe in principle gravitation of repulsion radiated quickly rotating pulsars. But there exist more simple way of studies --- to measure weight of rtating bodies (Podkletnov) The measure of the weight of rotating gyroscopes is also very interesting direction. I is more simple task than observation of quickly rotating stars. GW can be great for stars Wolf-Raye or by catastrophes of other nature. It is necessary to consider gravitation of two considered kinds as reality acting on the temp of the time.
Nastasenko's answer for Wolfgang Kohnle.
Wavelength 4.051249432*10^-35 m.
Valentyn Nastasenko. Physical-Mathematical Method Defined of Wave Parameters Gravitation Field / International Journal of Engineering and Technology, Vol. 11, No. 1, February 2019. – P. 62-64. DOI: 10.7763/IJET.2019.V11.1124
Valentyn Nastasenko "Planck length lp=sqrt(hG/c3)= 4.05124 *10-35m, lp0=sqrt(hG/c3/2pi)= 1.616.. *10-35m”
Interpreting the Planck length as "the" wavelength of gravitational waves is not comprehensible. It is the Compton wavelength of the Planck mass.
Considerations in the scale of the Planck length are not compatible to astronomical or astrophysical considerations.
Planck length is an abstract quantity. I got the wavelength - through real physical quantities - the frequency of oscillation of the waves of the gravitational field. I did what M. Planck did not see. From abstract values to real ones.
Anyway, read the article:
Valentyn Nastasenko. Physical-Mathematical Method Defined of Wave Parameters Gravitation Field / International Journal of Engineering and Technology, Vol. 11, No. 1, February 2019. – P. 62-64. DOI: 10.7763/IJET.2019.V11.1124
Ranjit Barua
Dear Ranjit,
You write: "Gravitational waves are 'ripples' in space-time..." You give space-time the status of a physical object. However, space and time are not material. These are philosophical categories. Perhaps it is better to explain the phenomenon only with those concepts that we know from experience.
We call the interplanetary dispersed environment - an electromagnetic field. You can call this environment any words: ether, physical vacuum, etc. The smallest particles of this medium - gravitons - continuously move at the speed of light. We are convinced of the existence of the field as a medium whenever we bring a smartphone to our ear.
Everyone knows about the existence of EMP - an electromagnetic pulse that accompanies a nuclear explosion. Perturbations of the electromagnetic field environment are a means of electronic warfare.
Electric and magnetic fields are, respectively, direct-flow and vortex flows of the electromagnetic field medium. There is a complete analogy here with wind and vortices as air flows. The environment of the electromagnetic field fills interstellar space. The recorded gravitational waves are electromagnetic impulses, longitudinal waves in the environment of the electromagnetic field (Tesla waves). Perturbations of the medium arise during acceleration and impact collisions of space objects. It is impossible to feel gravitational waves because we have no organ for sensation of the electromagnetic field.
Dear Valentyn Nastasenko
I have read the article you mentioned. But I could not find any relation to the question in this thread, if we can feel gravitational waves.
May be with your specific knowledge you can contribute to the problem concerning a possible flow of incoherent gravitational waves out of active stars.
We also can question the role of gravitational waves in levitation experiments. Every qualified contribution to this question surely would be welcome.
" we have no organ for sensation of the electromagnetic field "
Our eye is a very precise organ to sense electromagnetic fields. It has a frequency range from dark red to violet. Our skin is far less sensitive but has a much wider frequency range. Did you ever feel the electric tension of an approaching thunderstorm in the mountains? It is an intense and very frightening sensation.
Obviously in theory you can feel gravity waves or any time variation in tidal accelerations IF THEY ARE STRONG ENOUGH. But from our measurements so far, we know they are not currently strong enough to feel.
Human cells and his body as a whole are reliably protected from external vibrations if their threshold is not higher than the critical one.
And the oscillations of the waves of the gravitational field, against the background of the general gravitational field of the Earth, are below this threshold.
DNA can feel them if they are coherent and similarly directed, and in this process there are billions of cells involved.
Maurice J Dupre
Tidal effects have nothing to do with gravitational waves.
Valentyn Nastasenko
A source of incoherent gravitational waves can (theoretically) be strong enough that the intensity gradient of the waves can be felt like gravity.
Specifin the essence of your questions.
LIGO perceives gravitational waves.
Man, as a physical and biological organism, also perceives them. But on special occasions.
Under normal conditions of Earth's gravity, they are little felt.
Wolfgang, all curvature is involved in tidal accelerations. A gravity wave is in effect a changing gravitational field which therefore causes the tidal accelerations to change.
Maurice J Dupre
We should not consider slow changes in gravitational fields caused by moving masses as gravitational waves. In terms of wave theory those changes are below the aperiodic limiting case or within the near field if we refer to electromagnetic similarities. Genuine gravitational waves propagate within the far field of its sources.
Wolfgang Konle, I understand your point, but the question of what can be felt applies in any situation of changing tidal acceleration which includes gravity waves.
A person can feel only in a special state of consciousness.
Devices are more reliable.
Gravitational wave does not exist or there is no gravitational wave that LIGO claims.
First of all, nothing is working mechanically in the universe as Mr. Einstein is claimed.
Secondly Mr. Einstein postulation of existing Black Hole in universe is totally incorrect.
Thirdly: for wave to travel, it needs temperature, but there is no temperature between galaxies, thus no wave can pass from its galaxy.
FYI: The 2019 media showed a picture of BH. that picture was computerized by a computer artist.
Gravity is Internal
Article Gravity is an Internal Force
regards
LIGO regularly detects bursts of gravitational waves.
In space, there is no Kelvin zero temperature.
Answer that there gravitational waves are none - to the 2017 Nobel Prize winners.
Maurice,
It should be possible for chemical systems to detect gravitational waves. You have to distinguish the compressional waves in the potential from the gradients of the potential. Both occur and both have their own methods of detection and technology. LIGO and Mossbauer effect gravitational detectors and time dilational detectors all rely on the changing rate of clocks or the direct change in the gravitational potential with time.
Gravimeters measure the change in acceleration fields, which can be from the flows and diffusion of the potential. But ultimately measure its spatial and temporal changes. There are many more types of these. Much lower cost and more practical.
Ilya Prigogine (Nobel Prize Chemistry 1977) and Dilip Kondepudi wrote about bistable states in chemical systems (organic included) which would be sensitive to the gravitational acceleration, and probably to its changes.
The changing tidal acceleration from the sun and moon is a very precise and simple vector that varies (depending on location) about +/- 1000 nanometers per second squared. It is readily measured and precisely tracked by superconducting gravimeters, broadband three axis seismometers, MEMS gravimeters and a host of other gravimeter types.
You could make a 3 axis MEMS gravimeter and put it in a cell phone. It is based on cell phone MEMS gravimeter technology. Same sensing element, better readout and electronics. The sun moon signal is so precise (all three axes of the vector signal) that it can be used to solve for the precise location and orientation of the sensor.
So, while it is technically possible to have an organic gravitational sensor, (there is an electrochemical sensor, and the atom interferometer gravimeters could be considered photostimulated atom gravimeters) It is much more likely that the 7.8 billion people on earth will be using low cost gravitational GPS and orientation devices soon, than feeling something in their hearts and minds. I won't discount it. My daughter would say it is possible. I am just trying to track the development of the emerging gravitational engineering industry.
I was working in Austin 1971-1975 and hung out with Dilip and others while i was studying at UT. I bugged him to work on gravity with Prigogine. So I remember it, but no one else seems to have read and understood the implications of atomic and molecular gravitational sensors. Probably because they called it chiral and no one knew what that meant.
Richard Collins, Director, The Internet Foundation
LIGO compares the properties of the vacuum in two perpendicular directions in respect to the propagation of light. The comparison is permanently gauged according to the movement of earth in space. According to the general relativity theory, gravitational fields have an influence on the propagation of light in the vacuum. Another influence is not known.
This comparison is a highly sensitive observation of the short time impact of gravitational waves including the measurement of wave intensity, frequency and impact direction.
Feeling gravitational waves via forces would require a much higher wave intensity.
Unfortunately, the sun/moon signal becomes disturbed by local differences of mass density. Even a neighboured skyscraper significantly modifies the signal in a way which blocks position determination. Tidal waves also disturb position determination on the ocean and to a small extend on land as well. It will take a long long time to tabulate all the disturbances which currently prevent the usage of the sun/moon/earth gravitation vector for exact position determination.
So far, the only reliable recorder of gravitational waves is LIGO-type observatories.
In theory, the sun's gravitational field will affect an individual atom on Earth. But neighboring atoms will influence more strongly. However, as a principle, such a path cannot be ruled out.
I think I convinced everyone with my answer.
There is nothing to argue about further.
Richard Collins, is it possible that some atmospheric chemical reaction that takes place on a very large scale could be slightly affected by gravitational waves in some small way?
For the Earth, the most influencing will be its gravitational field. It slightly depends on the height above sea level.
The second influencing factor, which is orders of magnitude lower, is the gravitational field of the Moon, as evidenced by the tides.
The third influencing factor, several orders of magnitude lower, is the impact cone of the gravitational field of Venus (but its 2 encounters with the Earth occur in 243 days.
The fourth factor is the gravitational field of the Sun on the illuminated side, its influence may be higher than the cone of Venus.
As a gravitational lens The Sun's gravitational field is amplified by the Moon during its eclipse, but it is a narrow trail with a diameter of 70 km a short time.
However, the degree of influence of all gravitational fields is much lower than the intermolecular forces of the substance. An exception will be biophysical objects of the level of viruses and bacteria, which have their own biofield. Special research is needed here. For large cellular organisms of micro and macro levels, the overall effect of the Earth's gravitational field will significantly exceed the fluctuations from the above phenomena. But it will be.
We can completely exclude the impact of gravitational waves on chemical or metabolic processes. The thermal impact is much larger.
Interesting. Could you be more explicit? Resonance in respect to what?
The impact of resonant vibrations on the destruction of bacteria and viruses was substantiated of Alexander Gurvich (Russia) and Royal Rife (USA) in the last century.
On this basis, I propose a method for dealing with COVID-19 [1].
If possible, read it all.
[1] https://gsconlinepress.com/journals/gscarr/content/fight-against-covid-19-and-setting-new-research-tasks
Valentyn Nastasenko
Sorry, but we have been talking about gravitational waves and their resonances. Expecting gravitational resonance phenomena with bacteria and viruses seems to be very far-fetched.
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