This book is dedicated to my colleagues, whose unceasing efforts led to a
resurgence of interest in the planet Mercury and eventually to reconsideration
of return missions to Mercury despite the challenges.
Voltammetry techniques measure current as a
function of applied potential under conditions that
promote polarization of a working electrode. Polarography: Invented by J. Heyrovsky (Nobel
Prize 1959). Differs from voltammetry in that it
employs a dropping mercury electrode (DME) to
continuously renew the electrode surface. Amperometry: current proportional to analyte
concentration is monitored at a fixed potential
The first historical test on the theory has been the deflection of light grazing
the solar surface (Eddington 1919): the compatibility of the theory with
this first experiment together with its ability to explain the magnitude of the
perihelion advance of Mercury contributed strongly to boost acceptance and
Many of the Earth’s elements travel or cycle through the natural environment. This means
that they are transported from the soil into nearby lakes and rivers, and then evaporate
from the water into the air, to be transported by wind and eventually re-deposited to
the surface where the cycle starts over again. Mercury cycles through the environment
in this way (see Figure 5). An atom of mercury may begin its journey by being eroded
from rocks on the shore of a lake or by being vented into the atmosphere as mercury
vapour from a volcanic eruption. These are natural emissions.
(BQ) Ebook Space and technology: Planets provedes how are the orbits of the inner planets different from the orbits of the outer planets? Why is it difﬁcult to study Venus? What makes Pluto’s orbit different from all the other planets? Gravity is the force that holds the solar system together.
(BQ) Ebook Space and technology: Inner and Outer Planets provides about what are some differences between inner and outer planets? How were Mercury’s craters made? Why will astronaut's footprints remain on the Moon’s surface for years?.