Note: Many of our articles have direct quotes from sources you can cite, within the Wikipedia article! Archaeologists use tree-ring dating (dendrochronology) to determine the age of old pieces of wood.
linked to the present day and thus calendar or sidereal time) or floating.
When Gmail launched it had a limited feature set but did one thing very well, delivered emails.
Unlike competitors it was clean and easy to use with no distracting flash ads and numerous interface improvements.
Over time Google released more features and made the service better, faster, and easier to use.
Years later Gmail was taken out of “beta” and finally listed as being “complete,” though to this day improvements continue to happen.
Archaeologists use tree-ring dating (dendrochronology) to determine the age of old pieces of wood.
These changes provide a long-term sequence of climatic events, recorded as changes in the thickness of sediment layers (known as "varve analysis"—the term "varve" means a layer or layers of sediment.
Typically, varve refers to lake or glacial sediment), as temperature induced changes in the isotopic ratios for oxygen isotopes in sediments, and in the relative abundance of fossils.
Back in the present day nightmare, everyone is acting awfully nice to Offred — they think she's pregnant.
There is a rule of thumb regarding dating soft felt hats (what we now call fedoras) at just a glance, which postulates that hats with taller crown plus narrower brims are from the 1920s to mid-1930s or so, whereas hat crowns slightly lowered but brims grew wider from roughly the late-1930s through the 1940s into the early-1950s.