# Carbon Dating

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• Wow, I wish I knew how old this place really was!
• You know you can find out how old these bricks are using carbon dating right?﻿
• What is carbon dating?﻿
• Carbon dating is a process by which archaeologist measure the carbon-14 content in a fossil to determine its approximate age.
• How do you use carbon dating?﻿
• You use the formula A=Ao(1/2)^t/h, A is the current amount of Carbon 14, Ao is the initial amount, t is the time (in years) and h is half-life(5730 years)﻿
• ﻿Could you help me find out how old the bricks are using carbon dating?
• ﻿Sure thing! Let me measure the amount of current Carbon-14.
• I found .0000009 grams and initially it was .0000013 grams of carbon-14. You then do .0000009/.0000013= .0000013(1/2)^5730/.0000013. You then get .6923=1/2^t/5730, you then divide 1/2^t/5730 by log1/2^t/5730 and now you get -.15=(-.3)(t/5730) then .5=t/5730 which gets you t(time)=2865.﻿
• ﻿WOW! Those bricks are 2865 years old! Thank you so much for helping me!
• ﻿    You're Welcome!
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