Experimental tests of the universality of free fall and of the inverse square law

Author(s):  
E. G. Adelberger
2014 ◽  
Vol 30 ◽  
pp. 1460268 ◽  
Author(s):  
T. Ariga ◽  
S. Aghion ◽  
O. Ahlén ◽  
C. Amsler ◽  
A. Ariga ◽  
...  

The motivation of the AEgIS experiment is to test the universality of free fall with antimatter. The goal is to reach a relative uncertainty of 1% for the measurement of the earth's gravitational acceleration [Formula: see text] on an antihydrogen beam. High vertex position resolution is required for a position detector. An emulsion based detector can measure the annihilation vertex of antihydrogen atoms with a resolution of 1-2 μm, which if realized in the actual experiment will enable a 1% measurement of [Formula: see text] with less than 1000 [Formula: see text] atoms. Developments and achievements on emulsion detectors for the AEgIS experiment are presented here.


2014 ◽  
Vol 112 (20) ◽  
Author(s):  
D. Schlippert ◽  
J. Hartwig ◽  
H. Albers ◽  
L. L. Richardson ◽  
C. Schubert ◽  
...  

2016 ◽  
Vol 16 (08) ◽  
pp. 1640018 ◽  
Author(s):  
MICHÈLE BODO ◽  
SÉBASTIEN ROTH

This study deals with free fall accident analysis involving adults, and their numerical replications using a finite element model of the human thorax. The main purpose is to determine the role of body position at impact in the thorax injury risk appearance. For this study, cases of real-world free-fall provided by an emergency department were selected and investigated. These cases involved both male and female with an age range of 20 to 63 years, who sustained accidental free-fall with both injured and uninjured cases. The examination of the patients' medical record provided helpful information to accurately perform numerical replications with the finite element model HUByx (Hermaphrodite Universal Biomechanical yx model) which was already validated for various experimental tests in the field of automobile, ballistic impacts and blast. The results of simulations at different impact location allowed highlighting the crucial influence of the body orientation in the risk of thoracic injury occurrence.


2020 ◽  
Vol 37 (4) ◽  
pp. 043701 ◽  
Author(s):  
Ke Zhang ◽  
Min-Kang Zhou ◽  
Yuan Cheng ◽  
Le-Le Chen ◽  
Qin Luo ◽  
...  

1995 ◽  
Vol 51 (6) ◽  
pp. 3135-3135 ◽  
Author(s):  
Y. Su ◽  
B. R. Heckel ◽  
E. G. Adelberger ◽  
J. H. Gundlach ◽  
M. Harris ◽  
...  

2017 ◽  
Vol 880 ◽  
pp. 012067
Author(s):  
Luigi Seveso ◽  
Valerio Peri ◽  
Matteo G. A. Paris

2016 ◽  
Vol 117 (2) ◽  
Author(s):  
Xiao-Chun Duan ◽  
Xiao-Bing Deng ◽  
Min-Kang Zhou ◽  
Ke Zhang ◽  
Wen-Jie Xu ◽  
...  

2020 ◽  
Vol 102 (12) ◽  
Author(s):  
Sina Loriani ◽  
Christian Schubert ◽  
Dennis Schlippert ◽  
Wolfgang Ertmer ◽  
Franck Pereira Dos Santos ◽  
...  

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