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...change with time. In fact it is now apparent that the expansion rate of the Universe is not constant in time, so we can refer to the time-varying Hubble parameter cap h of t , which is related to time-varying value of the scale factor by cap h of t equals a dot above of t divided by a of t Equation label: (2b) For many years it was believed that the expansion rate of the...

...change between units – usually known as converting. So, if one centimetre is a hundredth of a metre, that means one metre must contain 100 centimetres. Similarly, one metre contains 1000 millimetres and one kilometre is the same as 1000 metres. This can be summarised as follows: 1 km = 1000 m 1 m = 100 cm 1 m = 1000 mm. or in a diagram that shows how to change between...

...changes in a group of autistic children receiving the intervention with an age- and intellectually-matched group of children also with autism, but not receiving the intervention...Week 1: Introducing the autism spectrum: 4.3 Brain imaging - Much of the evidence for differences in the brain in autistic people comes from brain imaging methods. Some – for instance Magnetic...