In all, staff swapped ideas with around 10 other people and took away loads of new ideas!
It was great to see everyone talking so enthusiastically about their own ideas, as well as making notes on what everyone else had to offer.
The first method was based on radioactive elements whose property of decay occurs at a constant rate, known as the half-life of the isotope.
Even though more than one method of verification is used in most cases, the lack of an accurate method to date non-organic materials lends a certain degree of uncertainty to the accepted history of our planet.It is also important not to forget that throughout the history of humankind any discovery that shakes the status quo is always under attack until it becomes established, and we are in an era where many of the things that we once considered certain will become errors of our past.The isotope of Potassium-40, which has a half-life of 1.25 Billion years, can be used for such long measurements.Another absolute dating method is thermoluminescence, which dates the last time an item was heated.Conclusive evidence of the existence of Noah’s Ark has eluded ark hunters since time immemorial.
The Bible says the vessel made landfall on the “mountains of Ararat” in Turkey after 150 days in the water.
This method includes carbon dating and thermoluminescence.
The absolute dating method first appeared in 1907 with Lord Rutherford and Professor Boltwood at Yale University, but wasn’t accepted until the 1950s.
By making multiple measurements (you need at least two for a date estimate) we can find out how much radiation the item was exposed to over the years and can get dating estimates related to when the item was last heated.
This method has the following restrictions: a) It cannot be used to date items many thousands of years old; b) it can only be used in non-organic materials; and c) the materials to be dated must have been heated to more than 350 degrees Celsius. All of the current dating methods are going through refinement.
Andy Gray also set up a station demonstrating some of the new ideas for using technology in classrooms that will hopefully be adopted.