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...liquid will eventually settle out under the influence of the Earth's gravitational field (the strength of this force is denoted g). Small particles, however, will usually separate extremely slowly (or not at all) unless subjected to a much greater force than gravity. This can be achieved by centrifugation, in which the suspension of particles is spun round an axis at very...

...solid with closely bonded atoms. Some types of tissue – for example breast tumours, which are denser than the surrounding tissue – can also be differentiated by X-rays (Figure 2). Figure 2 X-ray of a breast tumour...Metals in medicine: 2.1 Computed tomography (CT) scans - A conventional X-ray of a bone fracture is a two-dimensional (2D) image, taken from the front of...

...liquid and others up to 1 litre (1 000 ml). Some may hold more or less than this. [Described image] Figure 27 A measuring jug Now take a look at the following example. Example: Measuring liquids If you had to measure out 350 ml of juice for a recipe, where would the liquid come to in this jug? [Described image] Figure 28 Measuring liquids in a measuring jug Method There...