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→An experiment performed at high-schools
"Chemical reactions can yield a release of energy, but mass is neither created nor destroyed". Not so. It is a common misconception that E=mc^2 relates only to nuclear processes. It actually relates to all processes, though nuclear ones are the only ones for which the difference in mass can be reasonably measured. No one doubts the quantitative results, for nuclear processes, detailed on the article page. The equation E=mc^2, initially formulated on theoretical grounds, is in excellent agreement with those results. There is nothing about the theoretical underpinnings to suggest that there is some "threshold" below which Δm is zero, or that it only applies to certain types of interactions. There is good reason to believe that it applies everywhere, even though the mass difference, in the case of chemical reactions, is not readily measurable.
"Chemical reactions can yield a release of energy, but mass is neither created nor destroyed". Not so. It is a common misconception that E=mc^2 relates only to nuclear processes. It actually relates to all processes, though nuclear ones are the only ones for which the difference in mass can be reasonably measured. No one doubts the quantitative results, for nuclear processes, detailed on the article page. The equation E=mc^2, initially formulated on theoretical grounds, is in excellent agreement with those results. There is nothing about the theoretical underpinnings to suggest that there is some "threshold" below which Δm is zero, or that it only applies to certain types of interactions. There is good reason to believe that it applies everywhere, even though the mass difference, in the case of chemical reactions, is not readily measurable.
By the way, another "table-top" demonstration of relativity may be found [http://www.physics.umd.edu/lecdem/outreach/QOTW/arch11/q218unipolar.pdf here]. It does not demonstrate E=mc^2; it's about electrodynamics under the Lorentz trasform.
By the way, another "table-top" demonstration of relativity may be found [http://www.physics.umd.edu/lecdem/outreach/QOTW/arch11/q218unipolar.pdf here]. It does not demonstrate E=mc^2; it's about electrodynamics under the Lorentz transform.
[[User:SamHB|SamHB]] 19:36, 10 January 2013 (EST)
[[User:SamHB|SamHB]] 19:36, 10 January 2013 (EST)