A sedimentation rate is common blood test that is used to detect and monitor inflammation in the body. The sedimentation rate is also called the erythrocyte sedimentation rate because it is a measure of the red blood cells (erythrocytes) sedimenting in a tube over a given period of time. Sedimentation rate is often abbreviated as sed rate or ESR. Although this test measures a general state of inflammation, it is not specific to what causes the inflammation. It is elevated in inflammatory diseases, including arthritis as well as in autoimmune diseases such as lupus.
Earth spins because of the way it was formed. Our Solar System formed about 4.6 billion years ago when a huge cloud of gas and dust started to collapse under its own gravity. As the cloud collapsed, it started to spin. Some of the material within this cloud gathered into swirling eddies and eventually formed into planets.
In their new model, the Earth's inner core, made up of solid iron, 'superrotates' in an eastward direction â meaning it spins faster than the rest of the planet. Meanwhile the outer core, made up of mainly molten iron, spins westwards at a slower pace. Earth's inner core (the very central sphere) 'superrotates' in an eastward direction- meaning it spins faster than the rest of the planet. Meanwhile the outer core (the yellow sphere) spins westwards at a slower pace.