James Wentworth wrote: >the average densities of planets and asteroids are >[...] in terms of grams per cubic centimeter.
I was sufficiently interested in this to try a crude google measure.... Google scores: planet density kg/m = 7,820 planet density g/cm = 9060 Given that the web is US dominated, it is interesting to try a Google country specific search: Pages from the UK (www.google.co.uk) planet density kg/m = 501 planet density g/cm = 323 >In addition, in radio astronomy the shorter radio wavelengths >are expressed in centimeters (for example, the famous >21.6 cm "water hole" frequency often used in radio searches >for signals from other civilizations). seti frequency water = 7,600 seti wavelength water = 2,340 Google country specific search: Pages from the UK (www.google.co.uk) seti frequency water = 287 seti wavelength water = 133 So it seems that there is not universal agreement on which units are used. I don't know if that is interesting to others.
