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.
Best Answer: You can draw with any kind of ink but there are several types to know about; 1) Acrylic is made like acrylic paint using polymers to make it permanent, and waterproof. 2) India ink is made with a substance called 'lac' (as in lacquer) which is made from a certain insect base. This is a permanent, waterproof ink. 3) Fountain pen inks are water soluble so they will not clog the pens.