In passive solar building design, windows, walls, and floors are made to collect, store, and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because, unlike active solar heating systems, it does not involve the use of mechanical and electrical devices.[1]
[pinit] I looked on the back of a Magic Eraser package the other day and noticed there werenât any ingredients listed. That seemed very odd to me since just about every cleaning product out there has some kind of ingredient. I did a quick search and found out Magic Erasers are made of a product called melamine foam.
Who Invented the Eraser. 12 Jan, 2012 who invented 1. An eraser, also known as a rubber, is a stationary product used for rubbing out markings made with a pencil. They are usually made with synthetic rubber, but can also be made out of other materials.