Sentences with phrase «lead decay rate»
Carbon 14 assumptions, e.g. rate of C14 generation in upper atmosphere, have absolutely nothing to do with the lead - lead decay rate.
http://religion.blogs.cnn.com/ Not exact matches
«We developed three independent age - dating techniques that are based on the different decay rates of radium, thorium and lead isotopes.
Members of a team led by paleoanthropologist Isaiah Nengo estimated the fossil's age by assessing radioactive forms of the element argon in surrounding rock, which decay at a known rate.
Flossing lowers the decay rate and stimulates the gums, which leads to less gum recession and gum disease later in life.
In addition to direct MYI melt due to high - latitude warming, the impact of enhanced upper - ocean solar heating through numerous leads in decaying Arctic ice cover and consequent ice bottom melting has resulted in an accelerated rate of sea - ice retreat via a positive ice - albedo feedback mechanism.
- any increase of the decay rate from the biosphere over the uptake would lead to increased oxygen use, but we see the opposite: oxygen use is less than expected from fossil fuel burning, thus the biosphere is a net absorber of CO2.