By Alex Horne

Alex Horne isn't really a birdwatcher. yet his dad is, so with the possibility of fatherhood looming on his personal horizon, Alex determined there has been no higher time to really get to grasp either his father and his father's favorite pastime. So he challenged his dad to a huge yr: from 1 January to 31 December they might every one attempt to spot as many birds as attainable; the person who spied the main species often is the victor. alongside the best way Alex might discover what makes his dad tick, choose up a bit fatherly knowledge and even perhaps 'get into' birdwatching himself.

Join Alex as he trips from Barnes to Bahrain during this captivating story of obsession, manliness, fathers and sons, and the hugely fun twists and turns of a year-long chook race.

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Extra resources for Birdwatchingwatching: One Year, Two Men, Three Rules, Ten Thousand Birds

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16. An idea of how such a plane looks may be gained from Fig. 17 although the angle from which the photo­ graph was taken is not the best for showing how the atoms lie. A clearer view of the same type of plane ap­ pears in Fig. 3. For reasons that will become obvious in a later section, the plane abc is known to crystallographers as a (111) plane. THE NAMING OF PLANES Because frequent reference must be made to different types of planes, a convenient way of specifying them is desirable. A satisfactory system was developed years ago by W.

3. Marie L. V. Gayler: "The Constitution of the Alloys of Iron and Manganese," Journal, The Iron and Steel Institute, Vol. 128, 1933, pp. 293-340.

A lattice should not be imagined as a set of lines but as a phantom three-dimen­ sional array of points that is superposed on the substance and is related to the position of its atoms. In a simple metal such as iron or copper, an atom is imagined to be centered on each point. 3 In some substances, the atoms may be considered merely to be associated with the lat­ tice points, the points themselves being unoccupied. 3 For a body-centered cubic metal, two sets of points are needed, one for corner atoms and one for center atoms.

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