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7.1 Blackbody radiation

Interpretation of the light astronomers collect from AGN depends on understanding the physical processes leading to the emission of that light. Because the conditions in the emitting regions of AGN are very different from those on the surface of the Earth, some of these processes may be entirely unfamiliar to you. This subsection begins with a discussion of blackbody radiation, which should be familiar, and covers material which you will need to appreciate Peterson's discussion of AGN.


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One Pink Valentine Song
Song is sung to the tune of "Ten Little".  The song reinforces counting skills. (01:12)
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8.4 Referencing quotes

Quoted material can add to a discussion significantly. It can offer a summary of points that you have explored, or provide an example or even enable you to contrast two different definitions. However, quotes should not be seen as a substitute for your own words. They should be used sparingly. Moreover, quoting material involves the development of particular skills, those of referencing, integrating and selecting. As with ideas, you need to reference the source of the quote that you use as fol
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2.3.4 Klein bottle

There are two other surfaces that can be obtained by identifying both pairs of opposite edges of a rectangle. In one of these, shown in Figure 31, we first identify the edges AB and A'B', labelled a, in the direction shown by the arrowheads. This gives us a cylinder, as before. We then try to ident
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2.3 Towards a theory of parallel processing

When people are asked to guess about masked material, they are commonly able to provide some information, but it often lacks detail. For example, if participants in a Sperling-type experiment have recalled three letters, but are pressed for more, then they can often provide one or two. However, they generally do not know information such as whereabouts in the display the letters occurred, or what colour they were. These, of course, are exactly the kinds of detail that can be used to select it
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1.4.7 T is for Timeliness

The date when information was produced or published can be an important aspect of quality. This is not quite as simple as saying that 'good' information has to be up to date.

Activity

Here is an example of a news item from an onli
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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 reproduce material in this course:

Course image: Rebecca L. Daily in Flickr made available under Author(s): The Open University

5.4 Conclusion

You have seen that although the three products you have looked at are very different types of computer, they all embody the same basic functionality and a version of Figure 3 can be drawn for each product to illustrate this.

One feature of the PC is the range of forms of secondary memory it can use, and also the varie
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Children and young people’s participation
Listening to children is a first step in the participation agenda, which is reasonably well established. By contrast, enabling children to share in decision making lags some way behind. This free course, Children and young people's participation, emphasises that the adoption of an integrated approach to participation by different sectors of the children's workforce is of crucial importance.Author(s): Creator not set

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1.4.2 The doctor–patient relationship

However, some care relationships are more tightly defined and more hierarchical, for example a doctor’s relationship with a patient. Within the biomedical model, the doctor’s role is to focus on the patient’s body and its functioning. The patient’s role is to report clearly and accurately on the body’s functions and the feelings it transmits. There is relatively little scope for the patient to influence the definition of this scene. The doctor generally makes the opening moves, whil
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Japanese Vocab Builder #28 - Music
Learn Japanese with JapanesePod101.com! Our Japanese vocabulary lists are listener favorites, and now we’ve made it even better! In each lesson, you’ll hear the Japanese words and phrases from the Japanese vocabulary lists. Join us for Japanese Vocab Builder! In this lesson, you’ll learn words and phrases for Music. Click here to make your own flashcards [...]
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Rights not set

Alcatraz History Part 6 of 7
This Is An Alcatraz Documentary From 1971 With Howard Duff. This Contains Rare Film And Interviews. Film shows the island and the buildings.  Discusses the history of the jail and some of the people who were in the jail.  This is an extraordinary story.
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2 Representing symmetries

In Section 2 we develop an algebraic notation for recording symmetries, and demonstrate how to use the notation to calculate composites of symmetries and the inverse of a symmetry.

Click the link below to open Section 2 (9 pages, 504KB).

Section 2


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5 Effective use of information technology

The purpose of this course is for you to create a portfolio of your work to represent you as an effective user of information technology (IT) within your study or work activities. This will involve using criteria to help you select examples of your work that clearly show you can use and improve your IT skills. However, by far the most important aim is that you can use this assessment process to support your learning and improve your performance overall.

Using information technology skil
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3.6.1 Making summary sheets or cards

Andrew Northedge, in The Good Study Guide uses a diagram to illustrate this (reproduced as Figure 4). He notes that:

To boil the course down in this way, so as to extract its concentrated essences, is extremely valuable because it converts the broad themes and the detailed discussions of the course
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1 What's in a title? An introduction

Because the words ‘care’, ‘welfare’ and ‘community’ are so much a part of everyday language and debate, there's perhaps an assumption that people agree about what they each mean. These are three words that mostly evoke warm and positive feelings. In Activity 1 you're asked to think about opposite points of view.

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Learning outcomes

After studying this course, you should be able to:

  • critically evaluate disasters and their causes, especially from mechanical or material failures

  • demonstrate the importance of systematic and rigorous analysis of disasters, so that future failures can be avoided or prevented.


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World solar plane bid starts next leg
A solar powered plane takes off from Ahmedabad in India on the next leg of an unprecedented bid to fly around the world. Rough cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national, and international news
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Ontdek het regenwoud : Atelier
1.jpg

Neem met je klas deel aan het atelier Ontdek het regenwoud en laat je door onze animatoren veilig door de jungle loodsen.  De kinderen kruipen in de huid van de luiaard of de boomkikker, die hoog in de bomen leven. Ze schminken zich …


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1.6 Fibrous proteins

Most of the proteins described so far have been globular proteins. There are, however, some distinctive features that characterise fibrous proteins and we present here a general overview of these. Elongated fibrous proteins frequently play a structural role in the cell. They do not readily crystallise but tend to aggregate along their long axis to form fibres. X-ray diffraction studies of these fibres, in contrast to analysis of protein crystals, provides only very limited information on the
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