Our Ignorance About Gravity

Опубликовано 20 июня 2019, 12:45

Thanks to the Heising Simons Foundation (hsfoundation.org/) for their support of this video, and of short range gravity research.

This video is about how little we know about the behavior of gravity at short length and distance scales, what the constraints are on the inverse square law/Newton's law of universal gravitation, at the human and microscopic and atomic scales. Only on solar system scales or larger do we have good constraints on Newton's law of gravitation.

REFERENCES

Review of short-range gravity experiments in the LHC era
arxiv.org/abs/1408.3588v2

Zeptonewton force sensing with nanospheres in an optical lattice
arxiv.org/abs/1603.02122

Large extra dimensions
en.wikipedia.org/wiki/Large_ex...

Search for Screened Interactions Associated with Dark Energy Below the 100 μm Length Scale
arxiv.org/abs/1604.04908

Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
arxiv.org/abs/hep-ph/0611184v1

Photon Mass Experiment
dx.doi.org/10.1119/1.13149

Torsion balance experiments: A low-energy frontier of particle physics
E.G. Adelberger, J.H. Gundlach, B.R. Heckel, S. Hoedl, S. Schlamminger
doi:10.1016/j.ppnp.2008.08.002

TESTS OF THE GRAVITATIONAL INVERSE-SQUARE LAW
E.G. Adelberger, B.R. Heckel, and A.E. Nelson
Annu. Rev. Nucl. Part. Sci. 2003. 53:77–121 doi: 10.1146/annurev.nucl.53.041002.110503

Physical Review A, Vol 33, No 1: Improved result for the accuracy of Coulomb's law: A review of the Williams, Faller, and Hill experiment.
Lewis P. Fulcher.

Support MinutePhysics on Patreon! patreon.com/minutephysics
Link to Patreon Supporters: minutephysics.com/supporters

MinutePhysics is on twitter - @minutephysics
And facebook - facebook.com/minutephysics
And Google+ (does anyone use this any more?) - bit.ly/qzEwc6

Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!

Created by Henry Reich