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.
pencil eraser; rubber; rubber eraser (an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil) peak; point; tip (a V shape) Hyponyms (each of the following is a kind of pencil): lead pencil (pencil that has graphite as the marking substance) slate pencil (a pencil of soft slate (or soapstone) used for writing on a slate)