Tempo de Meia Vida.

How do scientists determine the exact age of a dinosaur fossil or an ancient Egyptian artifact? And how do doctors calculate how long it takes for a medication to disappear from our bodies? The answer to these questions lies in a fundamental mathematical and chemical concept: Half-Life! In this video lesson, you will learn definitively and without rote memorization how radioactive decay works. We will break down the graphs, formulas, and, most importantly, the logic behind half-life, ensuring that you can answer any question about it on the ENEM, university entrance exams, and school tests!