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10-Nov-2015 11:03

any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.

A method for determining the age of an object based on the concentration of a particular radioactive isotope contained within it.

Waves suitable for surfing are primarily found in the ocean, but can also be found in lakes or in rivers in the form of a standing wave or tidal bore.

However, surfers can also utilize artificial waves such as those from boat wakes and the waves created in artificial wave pools.

The term surfing refers to the act of riding a wave, regardless of whether the wave is ridden with a board or without a board, and regardless of the stance used.

The object's approximate age can then be figured out using the known rate of decay of the isotope.Other types of surfing include knee boarding, surf matting (riding inflatable mats), and using foils.



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