We use lots of products in our life.We heat our meals, we take medicals for our health, we cut a paper... All of products have a fonction for helping in our routine life. But nobody thinks about how they invented. All products have an invention story and history. Also some of products invented accidentally. Let's have a look closer to one of them. A microwave. A machine for heat our meals in easiest way. But do you know how it's invented? Today we're going to look at some products that invented accidentally. Now let's get started.