A Uniform Dead Tie Dye Shirt – though somewhat indirect and subtle – method used for stars that do not fit into these categories (which is the majority of them, at least in our own galaxy) is as follows: First deduce the likely temperature and size of the star from its dominant colour and the atomic spectra present in its light (temperature is related to colour, and different chemical elements are produced under different conditions of temperature and pressure, which in turn depend on the mass and age of a star). From these we can work out the likely luminosity. From the luminosity we can deduce the stars absolute magnitude [1] (i.e. how bright it would appear at a standard, fixed distance of 10 parsecs from us). Comparing this with the star’s apparent (i.e observed) magnitude, we can then calculate it’s actual distance from us. To me, this method of deducing a star’s distance from us merely by studying its light, and then doing a few calculations based on thermodynamics, nuclear physics, atomic physics and stellar dynamics, represents one of the most beautiful examples of the power of human ingenuity and careful, deductive reasoning in the history of science.
()
buy it now:Uniform Dead Tie Dye Shirt
When Delores spent his first night actually out with the other chickens in the Casino Of Envy Persona 5 shirt, I was anxious about how he would handle himself, as he was pretty shy. After a few false starts (and getting pushed off perches by the other chickens) he chose a walnut branch that lead to the night perches and slept on that. When Delores became a big, beautiful Golden Phoenix adult rooster, I thought the hens would probably make absolute fools of themselves trying to get his attention – and if he ignored them it would serve them right! I suppose I should have done something about the name – but Delores responded to “Delores” and appeared fine with it. (Also, my Aunt Delores would have been devastated if I changed his name.) A friend suggested calling him “Del” – which sort of made sense – but that sounded like he was lead singer in a retro 60’s band. As long as Delores didn’t mind – and let’s face it, he didn’t care – I was perfectly content to have a sweet rooster named Delores.
homepage: teeclover
Comentários