Helium.com | View Alexander D Martin's articles http://www.helium.com/users/515106.xml View Alexander D Martin's articles en-us Copyright Helium.com Mon, 07 Dec 2009 04:27:24 GMT Mon, 07 Dec 2009 04:27:24 GMT No matter how many times you tear apart a lego toy and rebuild it, the number of blocks you are using stays constant. This obvious, intuitive prin... http://www.helium.com/items/1674602-understanding-the-law-of-conservation-of-mass Mon, 07 Dec 2009 04:27:24 First developed by Russian schoolteacher Viktor Mendeleev, the Periodic Table (a.k.a. Mendeleev's Table) is a chart that shows the elements arrang... http://www.helium.com/items/1673457-understanding-the-periodic-table-of-elements Sat, 05 Dec 2009 23:36:13 Niels Bohr's greatest contribution to chemistry was, arguably, to be the first to develop a physics-based model of the atom. The "Bohr Model" as i... http://www.helium.com/items/1673170-neils-bohrs-contribution-to-chemistry Sat, 05 Dec 2009 16:26:28 Have you ever wondered how geckos manage to stick to walls? The answer is remarkably simple: the van der Waals force. The van der Waals force exis... http://www.helium.com/items/1673145-what-are-ven-der-waals-forces Thu, 10 Dec 2009 19:08:50 The question "what is matter?" has two wildly different answers, depending on what the person asking the question is looking for. The simple, obvi... http://www.helium.com/items/1672842-what-is-matter Sat, 05 Dec 2009 05:47:05 Ernest Rutherford's 1911 experiments with gold foil discovered that the atom's positive charge is concentrated in one place - a nucleus, as we now... http://www.helium.com/items/1672832-what-was-shown-by-rutherfords-gold-foil-experiment Sat, 05 Dec 2009 05:26:36 For those dissatisfied with Google's monopoly on the market for internet searches, Microsoft's Bing presents a new and exciting alternative. Unlik... http://www.helium.com/items/1665403-a-guide-to-using-bing Sat, 28 Nov 2009 04:13:15