When your parent starts dating
Different isotopes of an element have similar chemical properties (undergo similar chemical reactions) but have different physical properties (such as evaporation rates).
However, we can predict what fraction of the parent atoms will decay over a certain amount of time because each radioactive isotope has a constant rate of decay (unaffected by temperature, pressure, or chemical state).
Kelvin argued that this was physically impossible (the concept is akin to a perpetual motion machine).
The kids loved Jack; they loved me; they loved our family. Months later, I was bragging to my sister about how well the kids were doing, and she started flipping through a stack of Maggie's drawings.
In almost every picture, a heart was flying out of a dog's chest with tiny red teardrops. "Bleeding hearts."Seven years later, I'd like to say my kids have adjusted.
But as much as Jack and I would like to see our divorce as past tense, it's a permanent state to my kids.
With each new developmental stage, they have new questions and worries. D., a leading divorce researcher and coauthor of What About the Kids?