yes paper must be substitude wood as heat absorber
spray oil
Fiat money is a suitable substitute used for trade barter.
When a substance is heated up, it emit heat radiation. In such way substance keep on losing heat energy. Thus a way that increase heat losing can lower heat of substance. Water can used as heat absorber.
Wax paper does not absorb heat. Wax paper is coated with paraffin, which does not allow heat to be absorbed. This allows wax paper to be used when cooking.
Solar water heaters do this, They can be simple affairs mounted on a house roof, or on a larger scale mirrors can be used to capture radiation and focus it on a heat absorber.
Sand sprinkled on a freshly written page was used as ink blotter.
Photoreactive paper is paper that reacts to light and/or heat. Common examples include the paper used to print photographs and thermal fax paper.
That sounds like the description of a postage stamp.
Lead is actually used as a sound absorber
Generally they are used to clean up spills. However they can just as easily be used to wrap food, act as plates, or substitute as napkins.
A voucher is a documented piece of evidence that can be used as a substitute for money. Vouchers can be in the form of a card, token, or paper document.
People are stupid.