material2 03-1. Glass / History of glass Today, let’s take a look at a beautiful but fragile friend, Glass. When we all stand in front of the glass, we are worried about breaking the window out of our guard for a moment, so we are careful :) Oh, of course, there is also really hard glass. If you drop your smartphone while on the road, Have you ever seen everyone who walked around hold their breath and flip their smartphone over? My hea.. 2021. 2. 4. 02. Plastic and Bio Plastic Today we are going to learn about plastic! Everyone, what comes to mind first when you think of plastic? In fact, plastic is so diverse and used in our lives that we can't think of just one. However, I don't think plastic is environmentally friendly in terms of its production process or being thrown away. So, recently, research on 'bio plastic', a material that can replace plastic, is being cond.. 2021. 2. 4. 이전 1 다음
