Searches for Non-Newtonians Variations in the Earth's Gravity

  • Aiken C.
  • Ander M.
  • Backus G.
  • Chave A.
  • Cooper P.
  • Fisher E.
  • Gorman M.
  • Greer J.
  • Hammer P.
  • Hildebrand J.
  • Lautzenhiser T.
  • Nieto M.
  • Parker R.
  • Sasagawa G.
  • Sidles C.
  • Spiess F.
  • Stevenson J.
  • Wirtz J.
  • Zumberge M.

A series of experiments is underway to search for non-Newtonian behavior in the earth's gravity field. The objective is to measure the variation of gravity with depth in settings where the density of the surrounding material is known accurately. Gravity values were obtained to a depth of 1.7 km in the Greenland ice sheet during the summer of 1987, and measurements to a depth of 5 km in the Pacific Ocean were initiated in the summer of 1988. Descriptions of these experiments, their hoped-for accuracies, progress on analysis, and conclusions to date will be presented.

Recent Publications

January 01, 2019

Friendly, appealing or both? Characterising user experience in sponsored search landing pages

  • Bron M.
  • Chute M.
  • Evans H.
  • Lalmas M.
  • Redi M.
  • Silvestri F.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Many of today's websites have recognised the importance of mobile friendly pages to keep users engaged and to provide a satisfying user experience. However, next to the experience provided by the sites themselves, ...

January 01, 2019

Analyzing uber's ride-sharing economy

  • Aiello L.
  • Djuric N.
  • Grbovic M.
  • Kooti F.
  • Lerman K.
  • Radosavljevic V.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Uber is a popular ride-sharing application that matches people who need a ride (or riders) with drivers who are willing to provide it using their personal vehicles. Despite its growing popularity, there exist ...

January 01, 2019

The paradigm-shift of social spambots: Evidence, theories, and tools for the arms race

  • Cresci S.
  • Petrocchi M.
  • Pietro R.
  • Spognardi A.
  • Tesconi M.

© 2017 International World Wide Web Conference Committee (IW3C2), published under Creative Commons CC BY 4.0 License. Recent studies in social media spam and automation provide anecdotal argumentation of the rise of a new generation of spambots, so-called social spambots. Here, for the first time, we extensively study this novel ...