Absolute dating is a method of determining the specific date of a paleontological or archaeological artifact or location based on a specific time scale or calendar. Scientists base absolute dating on measurable physical ... More »

Absolute age is the age of a geologic formation in years. Unlike relative age, which determines whether a formation is older or younger than its surrounding formations, absolute age provides geologists with the actual ag... More »

Relative age allows scientists to know whether something is older or younger than something else, while absolute age means that scientists know the exact number in years that have passed since the object was created. Rel... More »

Women who wish to conceive boys can follow the Shettles method or the Whelan method, using an ovulation calendar to time intercourse in relation to the date of ovulation. Both report varying levels of success but neither... More »

Carbon-14 dating uses the ratio of radioactive carbon-14 to non-radioactive carbon-12 to determine if the ratio is the same as in living organisms, or if it is lower, indicating that the carbon-14 has decayed during a pe... More »

According to the Smithsonian Institute, using radiodating of sedimentary rock tells the date of formation of the original igneous rock, which, through the processes of weathering and erosion, formed the layers of the sed... More »

Tin was discovered prior to the beginning of recorded history, so its exact date of discovery is unknown. Its first known use was at the start of the Bronze Age in approximately 3000 B.C. During this time period, it was ... More »

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