It appeared in a German popular science magazine, Kosmos Handweiser für Naturfreunde 1921, Heft 6, Seiten 141-145.
As translated by me: "The average ages of a few important geological formations, according to these lead measurements, are as follows: Precambrian 1,100-1,600 million years Silurian 430 million years Devonian 370 million years Carboniferous 340 million years" These were rough averages and not attempts to refer to the beginning, middle or end of the times mentioned.
The Royal Swedish Academy of Sciences this year has decided to award with the Nobel Prize for Chemistry a scientific feat which is less a direct improvement of our material living standards, but more a means of widening and deepening our knowledge in different scientific fields.
Professor Willard Libby has been selected to be the prize-winner for his method of age determination of materials of biological origin by use of carbon-14 as a measurer of time.
The method was developed by Willard Libby in the late 1940s and soon became a standard tool for archaeologists.
Libby received the Nobel Prize in Chemistry for his work in 1960.
The Aerogarden is an indoor garden, which is dirt-free and fool proof.
In 1947, Willard Frank Libby first proposed his radiocarbon dating theories.
Here are just a few ways to add a fresh and bright look to your home with flowers.
Spring cleaning is a great time of the year because it is all about renewal.
Carbon dating is only one of around 40 different radiometric methods.
Westgren, Chairman of the Nobel Committee for Chemistry of the Royal Swedish Academy of Sciences Your Majesty, Your Royal Highnesses, Ladies and Gentlemen.
His method has obtained widespread use and has become indispensable in archaeology, geology, geophysics and other sciences.