... Pugach A.F. Olenici D. Precise underground observations of the partialsolareclipse of 1 June 2011 using a Foucault pendulum and a very light torsion balance. http:// www. scirp. org/ journal/ ijaa/ID 4500094 . ...
... are two eclipses of the Sun (an annular eclipse on January 26 and a total eclipse on ... solareclipse in which the solar disk is never completely covered but is seen as an ...