The selective absorption of infrared ( IR ) light by a particular material occurs because the selected frequency of the light wave matches the frequency ( or an integral multiple of the frequency ) at which the particles of that material vibrate.
22.
:: : : For over two centuries, deluded nutjobs have made sensational claims about " precise alignment " and " exact dimensions " of the pyramids, such as the claim that its sides were integral multiples of the Pyramid inch, with precision of 8 decimals.
