A piece of surfaced (sanded smooth) 2×4 lumber actually measures 1½ inches thick and 3½ inches wide. In rough-cut condition, a 2×4 is slightly less than 2 inches thick and approximately 4 inches wide. When wood is milled from a rough to a smooth surface, it loses about ¼-inch from each of its four sides.
A scale used to measure the relative hardness of a mineral by its resistance to scratching. From softest to hardest, the ten minerals of the Mohs scale are talc (measuring 1 on the scale), gypsum, calcite, fluorite, apatite, orthoclase, quartz, topaz, corundum, and diamond (measuring 10 on the scale).
Not only does it prevent the further absorption of solar energy, it displaces, painfully, said solar energy with kryptonite radiation causing the immediate loss of a Kryptonian’s superhuman abilities within seconds and can, depending on the purity and exposure length, lead to the death of a Kryptonian by a form of “radiation poisoning”.