Semakan pada 03:38, 26 November 2015 sunting Polar (bincang \| sumb.) Penyelia 53,106 suntingan →‎Pencerapan 1919 ← Suntingan sebelumnya		Semakan pada 03:41, 26 November 2015 sunting batalkan Polar (bincang \| sumb.) Penyelia 53,106 suntingan →‎Anomali graviti Suntingan berikutnya →
Baris 235: === Anomali graviti === Terdapat sejarah yang panjang tentang pemerhatian fenomena graviti yang berkaitan semasa gerhana matahari, terutama sekitar waktu kepenuhan. Pada tahun 1954 dan sekali lagi pada tahun 1959, [[Maurice Allais]] melaporkan bahawa pemerhatiannya tentang pergerakan pelik/tidak dapat dijelaskan semasa gerhana matahari.<ref>{{Citation \|first=Maurice \|last=Allais \|title=Should the Laws of Gravitation be Reconsidered? \|journal=Aero/Space Engineering \|volume=9 \|pages=46–55 \|year=1959 }}</ref> Fenomena ini kini dikenali sebagai [[Kesan Allais]]. Begitu juga, Saxl dan Allen pada tahun 1970 memerhatikan satu lagi perubahan secara tiba-tiba dalam gerakan bandul kilasan, dan fenomena ini dikenali sebagai kesan Saxl.<ref>{{Citation \|first=Erwin J. \|last=Saxl \|lastauthoramp=yes \|first2=Mildred \|last2=Allen \|title=1970 solar eclipse as 'seen' by a torsion pendulum \|journal=[[Physical Review D]] \|volume=3 \|issue=4 \|pages=823–825 \|year=1971 \|doi=10.1103/PhysRevD.3.823 }}</ref> <!-- There is a long history about the observations of gravity-related phenomena during solar eclipses, especially around totality. In 1954 and again in 1959, [[Maurice Allais]] reported that his observations of the strange/unexplained movement during solar eclipses.<ref>{{Citation \|first=Maurice \|last=Allais \|title=Should the Laws of Gravitation be Reconsidered? \|journal=Aero/Space Engineering \|volume=9 \|pages=46–55 \|year=1959 }}</ref> This phenomenon is now called the [[Allais Effect]]. Similarly, Saxl and Allen in 1970 observed another event of the sudden change in motion of a torsion pendulum, and this phenomenon is called the Saxl effect.<ref>{{Citation \|first=Erwin J. \|last=Saxl \|lastauthoramp=yes \|first2=Mildred \|last2=Allen \|title=1970 solar eclipse as 'seen' by a torsion pendulum \|journal=[[Physical Review D]] \|volume=3 \|issue=4 \|pages=823–825 \|year=1971 \|doi=10.1103/PhysRevD.3.823 }}</ref> A recent published observation during the 1997 solar eclipse by Wang ''et al.'' suggested a possible gravitational shielding effect,<ref>{{Citation \|first=Qian-shen\|last= Wang\|coauthors=Xin-she Yang, Chuan-zhen Wu, Hong-gang Guo, Hong-chen Liu, & Chang-chai Hua \|title=Precise measurement of gravity variations during a total solar eclipse \|journal=Physical Review D \|volume=62 \|issue=4 \|page=041101(R) \|year=2000 \|doi=10.1103/PhysRevD.62.041101 }}</ref> though there is some serious debate. Later in 2002, Yang and Wang published the detailed data analysis suggested that the phenomenon still remains unexplained.<ref>{{Citation \|first=X. S. \|last=Yang \|lastauthoramp=yes \|first2=Q. S. \|last2=Wang \|title=Gravity anomaly during the Mohe total solar eclipse and new constraint on gravitational shielding parameter \|journal=Astrophysics and Space Science \|volume=282 \|issue=1 \|pages=245–253 \|year=2002 \|doi=10.1023/A:1021119023985 }}</ref> More studies are being planned by NASA and ESA over the next decade.

Gerhana matahari: Perbezaan antara semakan