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Short Reviews: Brian Tung

"The Dimensions of Our Galaxy" [permanent link]. A fascinating article that looks at an interesting question. If you have been transported to the centre of our galaxy, how do you find your way back to Earth? The article provides hints and guidelines to help you decide where the Earth could be in our galaxy based on what is known about the Milky Way and its surroundings.
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"The Grand Illusion" [permanent link]. An interesting article that looks at gravity; first, from the Newtonian perspective, then from the perspective of Einstein's General Theory of Relativy and shows why the Principle of Equivalence (acceleration and gravity produce the same effects) is so important to General Relativity.
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"Music of the Ellipses" [permanent link]. An interesting article that looks at the history of how we found out how the solar system looks like. It covers early thinking that the Earth was the centre of the universe to believing that the orbits of the planets are 'perfect' spheres, to the realisation that planetary orbits are ellipses and the discovery of Kepler's Three Laws of planetary motion.
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"What the Light Said" [permanent link]. An interesting fact article that gives a reasonable explanation on Einstein's Special Theory of Relativity. If you have always been puzzled by some of the stranger predicitions on the theory, like why light slows down or objects appear squashed as you approach the speed of light, give this article a go and you may understand Reltivity better.
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