Compact Bone. The next layer is made up of compact bone. It is a smooth but hard quality, with minimal gaps and spaces. This layer gives bones their white and solid appearance, and it is the part that you see when you look at a skeleton.
He used the inverse square law of light brightness on a particular type of variable star in those old star clusters. Some stars are very useful for finding distances to clusters and to other galaxies because they have a known luminosity that is large, so they can be seen from great distances away.ll of the RR Lyrae stars in a cluster have the same average apparent magnitude. In different clusters, the average apparent magnitude was different. This is because all RR Lyrae have about the same average absolute magnitude (=+0.6, or 49 solar luminosities).
amount of gravitational time dilation depends on the location of the observer, the âcorrectionâ of. the metric is specific to a particular observer, and we arrive at a âsingle-observerâ picture (or SO-. picture) of events in a static gravitational field.est of gravitational space dilation. A second purpose of. this paper is to show that the single-observer picture is. convenient for the calculation and interpretation of vari-. ous results in general relativity. But before doing so, we. address an objection that may already be in the mind of. the reader.