The actual underlying assumption is that, if those requirements have not been met, there is no reason for the data points to fall on a line.The resulting plot has data points for each of five meteorites that contain varying levels of uranium, a single data point for all meteorites that do not, and one (solid circle) data point for modern terrestrial sediments.And from the slope of the line we can compute the amount of time which has passed since the pool of matter became separated into individual objects.
A plot is constructed of Pb-206/Pb-204 versus Pb-207/Pb-204.
If the solar system formed from a common pool of matter, which was uniformly distributed in terms of Pb isotope ratios, then the initial plots for all objects from that pool of matter would fall on a single point.
The future can take care of itself."The two regularly visit the wealthy suburb of Neuilly-sur-Seine, near Sarkozy's childhood home.
Even so, Olsen has yet to meet her boyfriend's half-sibling, former President of France Nicolas Sarkozy, or his sister-in-law, supermodel-turned-singer Carla Bruni."Both brothers are very busy and lead their own lives nowadays," according to the source.
He's already got kids and is very happy with his status in life."Of course, a little looking never hurt anybody.
In January, they scoped out several Parisian churches as possible wedding venues.
(He divorced Charlotte Bernard in 2010; they share son Julien, 12, and daughter Margot, 10.)"Mary-Kate is just 27 but comes across as a lot, lot younger," says the Sarkozy source.
"She's clearly very excited about the chance to get married to a very successful, well-educated man, but life isn't always that simple.
But while one insider reveals that Olsen is "crazy for Olivier," a second source cautions that a wedding isn't in their immediate futures.
In fact, the source says the Frenchman is "wary" of tying the knot a second time.
he generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years (plus or minus about 1%).