Back	Weblinks and downloadable resources related to science and technology
	Some Excel files Some of these contain simple macros - sets of instructions assigned to a key combination. The macros can be easily viewed (and edited if necessary). Links to STA pages are also listed when relevant. Longitudinal waves Dice-throwing simulation Mass-spectrometer simulation Black body radiation Ship visibility (distance to the horizon) Refraction and dispersion of light by a glass prism Questioning the climate- change orthodoxy This Canadian site is maintained by experts in meteorology and climate science. They  have serious questions about the causes of global temperature variations. The site has five downloadable videos.