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The density of osmium is slightly greater than that of iridium; the two are so similar (22.587 versus 22.562 g/cm 3 at 20 °C) that each was at one time considered to be the densest element. Only in the 1990s were measurements made accurately enough (by means of X-ray crystallography ) to be certain that osmium is the denser of the two.
So a ball made of a less dense material like (perhaps)_Osmium - which is still quite a bit denser than gold. Osmium is 22 times denser than water - so an osmium sphere would have about 4.7 times less surface area than a water balloon of the same mass. Since the drag force is proportional to the area, you'd have 4.7 times less drag force.
A sunrise alarm clock is a device that incorporates a clock, a lamp, and (usually) a sound machine to wake you up with a simulated sunrise with or without an accompanying audible signal.
Osmium is denser by about 0.1%. See iridium#Characteristics which discusses the issue and provides some references. --Itub 16:50, 23 September 2008 (UTC) I updated the ranking and densities of osmium and iridium as per their respective articles. Unfortunately I suspect the degree of accuracy required to split these two elements means that the ...
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The Tonal 2 is a big leap beyond the 1. First of all, the max resistance jumps to 250 (from 200) —that’s less relevant for me, but it does permit a wider range of more expert weight lifters to ...
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Waterfowl and boats moving across the surface of water produce a wake pattern, first explained mathematically by Lord Kelvin and known today as the Kelvin wake pattern. [1] This pattern consists of two wake lines that form the arms of a chevron, V, with the source of the wake at the vertex of the V. For sufficiently slow motion, each wake line ...