logarithms (carbon dating 2)
TRANSCRIPT
LOGARITHMS & CARBON DATING ANDREW LEE, RYAN WONG, JOSHUA TAN
STORY • Anubis statue (made of wood) in dog form up
for sale. • Supposedly from King Tut’s dynasty, around
1320BC
• Determine age of statue by using carbon dating
CARBON DATING • Uses decay of carbon-14 to estimate the age
of organic materials (such as wood or leather) • Effective up to 62000 BC • Used to date many items such as Dead Sea
Scrolls and Shroud of Turin
WHERE DO LOGARITHMS COME IN?
LOGARITHMS IN CARBON DATING
• Method of carbon dating works upon fact that the proportion of carbon-14 atoms decreases at known constant rate
• Use amount of carbon-14 atoms to find how long organic matter has been “dead”
• Here, logarithms come in as we can use exponential decay graphs to find out time when sample died.
MIND = BLOWN
MORE INFORMATION • Formula for carbon 14 da0ng:
CASE STUDY A
• Formula:
• Carbon dating 60% carbon 14 compared to living sample
CASE STUDY A
• Formula:
• Carbon dating 99% carbon 14 compared to living sample
RYAN SAYS THANKS