4.3 Focus–directrix definitions of the non-degenerate conics Earlier, we defined the conic sections as the curves of intersection of planes with a double cone. One of these conic sections, the circle, can be defined as the set of points a fixed distance from a fixed point. Here we define the other non-degenerate conics, the parabola, ellipse and hyperbola, as sets of points that satisfy a somewhat similar condition. These three non-degenerate conics (the parabola, ellipse and hyperbola) can be defined as the set of points P in
3.1.1 Try some yourself In a supermarket the bill comes to £8.70, and you have discount coupons worth £3.50. The assistant says ‘that will be £12.20 please’. Is she right? Food Chains Cotton candy capillaries lead to circuit boards that dissolve when cooled Séminaires (pdf) - Caractérisation microstructurale des matériaux : Analyse par les rayonnements 1.2.3 Basic principles Whatever resource you choose to use to find information on the internet, many of the same principles apply. Each source that you use will probably look quite different from the one you tried before, but you'll notice that there are always features that are similar – a box to type your search terms in, for instance, or a clickable help button. Different resources refer to the same functions using different terminology, but the principles behind them are exactly the same. The trick is to chec Keep on learning   There are more than 800 courses on OpenLearn for you to c Part 2: 1 Introduction I have a number of purposes in mind as I write Part 2. You can read these in conjunction with Figure 4. Acknowledgements The content acknowledged below is Proprietary (see terms and conditions) and is used under licence. Grateful acknowledgement is made to the following sources for permission to use material: Course image: Sorin Mutu in Flickr made available under 3.5 The incredible shrinking chip This course focuses on the creation of a semiconductor transistor – a versatile tiny transistor that is now at the heart of the electronics industry. In video clips the history of the incredible shrinking chip, its Scottish connections and an explanation of the physics that make chips work are accompanied by a reconstruction of the making of a transistor using the crude techniques of yesteryear. In this course we follow two Scottish computer engineers with little or no physics knowled 3.3.1 Try some yourself Look at the diagram below and answer the following questions: (a) Write down the coordinates of the points P, Q, R, S and T. 2.1 Jupiter and its missions: an update Jupiter's visibly flattened shape is a result of the planet's rapid rotation. The flattening is not really apparent in Figure 9.1, because the terminator (the day-night boundary) is within the left-hand edge of the visible half of the globe. The flattened shape is better seen in Author(s): Acknowledgements The content acknowledged below is Proprietary (see terms and conditions) and is used under licence. Course image: INTVGene in Flickr made available under Creative Commons Attribution-ShareAlike 2.0 Licence. All other materials included in this course ar Keep on learning   There are more than 800 courses on OpenLearn for you to c 7.3 Summary of Section 7 The historian Linda Colley locates the birth of ‘Britain’ after 1707. She mentions three main factors that contributed to establishing the British nation: war, religion and the prospect of material advantage. The creation of the UK was not free from conflict, resistance, war and military intervention. The British Empire generated a unique opportunity for most UK nations to participate and enjoy some of the benefits it brough Effectively interacting and engaging patients who are underserved 5.3 Summary Common sense is a complex and contested phenomenon. The practice of systematic scepticism is a key aspect of social science, particularly in the analysis of common sense and the consideration of the social construction of social problems. Social constructionism emphasises the importance of social expectations in the analysis of taken-for-granted and apparently natural social processes. It starts by exploring the assumptions associated with the naming or labelling of things. It is sceptical ab 2.3 Newsgathering and newspapers
Taylor now discusses some early information and communication technologies and the extent to which they had an impact upon newspapers. 1.6.5 Folate (folic acid, vitamin B9 ) Folate is a generic name for a group of related compounds. The name ‘folate’ was based on the word ‘foliage’, after it was identified in a crude extract from spinach, though it is also found in liver, other green vegetables, oranges and potatoes and it is often added to breakfast cereals (usually listed as folic acid). Folate is less sensitive to heat than many of the B vitamins, though it is destroyed if food is reheated or kept hot for long periods. Folate is involved in amino acid Video Culture Class: Spanish Holidays #21 - Viking Pilgrimage
Activity 19
Learn about food chains and how they combine to form complex food pyramids. This short, computer-animated video will briefly cover the following key concepts: food chains, producers/consumers, the relationships between plants and animals in a food chain, the role of sunlight in a food chain, the role of plants in a food chain, the role of consumers in a food chain, food webs, food pyramids, and balancing a food pyramid. The video ends with a 10-question, fill-in-the-blank quiz. (The video do
Leon Bellan made a dissolving circuit board that, so far, just turns on an LED light. Its potential applications are far more promising.
Les thèmes des séminaires ici proposés s’inspirent largement de ceux développés dans l’ouvrage « Caractérisation microstructurale des matériaux : Analyse par les rayonnements X et électronique » publié dans la collection METIS Lyon Tech et édité par les Presses polytechniques et Universitaires Romandes en 2011. Le contenu de ces séminaires se veut être une présentation illustrative de plusieurs développements menés dans l’ouvrage mais aussi il offre souvent l’occasion d
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Activity 20
Study another free course
This resource will:
Explore how unconscious biases can impact on the care we provide to those who are medically under-served
Provide tips on how to enable individuals to empower themselves to take up the offer of a Medicines Use Review
Enable you to develop your own personal development plan to promote Medicines Use Reviews to people who potentially need them the most
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Learn more about Spanish culture with SpanishPod101.com! Ever wondered what the most important Spanish holidays are, and how they are celebrated? Then this 25-lesson video series is for you! With this series, you’ll learn the what, why, when and how of 25 well-known holidays in Spain.In this video, you’ll learn all about Viking Pilgrimage in [...]
