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1.5.1 Light-gathering power

One of the key benefits of using a telescope is that it enables fainter objects to be detected than with the naked eye alone. The light-gathering power of a simple telescope used with an eyepiece is defined as

where Do is the
Author(s): The Open University

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4.2.2 Using the web more effectively: gateways

A gateway on the web is a website intended to direct users to other preselected websites containing information on a particular topic. It can also refer to a computer that acts as a message router on the internet

University librarians often set up gateways for particular areas of study, although they may be set up by anyone with sufficient expertise in a topic. Gateways may be fairly general, such as a gateway site for sciences, or more specific, such as a gateway for part
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America Under Monroe and Adams: The Monroe Doctrine
A brief overview of the Monroe Doctrine, but lacks insight into what caused it to be written and its impact. More of a general video. Has a test afterwards (let the video run) that might be good, but moves very rapidly and deals with some issues not discussed with this video.
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Glossary

Click on the link below to open the course glossary.

Open glossary now...


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The Space of Dance: Media, Metaphor and Technology
Ellen Bromberg, Associate Professor, Dept. of Modern Dance. describes how in recent years, innovation in dance has included the integration of media and technology, both on stage and on screen, in a multitude of ways. The use of interactive programs that
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3.3 Thinking about modes of access

Described image
Figure 15 A smartpho
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6.1 Direct proportion

The first type of proportion relationship is known as direct proportion. Two quantities are said to be directly proportional to each other if when one doubles, triples, quadruples, the other also doubles, triples, quadruples. For example, if you buy three times as many items as usual, you would expect to have to pay three times as much money (unless there was some special offer available), because the price is directly proportional to the number of items bought.

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TALAT Lecture 1102: Environmental Factors
This lecture reviews the environmental factors affecting the aluminium industry and the remedial practices followed; it describes the concept of a product life cycle and the importance of recycling; it also describes the secondary aluminium industry, its history, processes, products and structure; it outlines the methodology used to calculate recycling rates and summarizes the scope and size of the European aluminium industry.
Author(s): TALAT,Geoff Budd, Aluminium Federation, Birmingham

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

2.8 Systematic hierarchy

Activity 7

0 hours 10 minutes

This clip builds on the idea that development recapitulates systematic hierarchy, by trying it out with the wrist bones of hominoids.

At the end of
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Living in a warmer world - Jim Salinger
Jim Salinger delivered this summary lecture as part of a tour to promote his book, Living in a Warmer World. The lecture covered the broader topics of human-generated climate change and the specific impacts we could expect in our part of the world. The lecture was given at Otago on the 31st of October
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Further reading


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11.6 Publishing controversial new ideas

Horton, R. (2004) ‘The lessons of MMR’, The Lancet, 363, 6 March 2004, pp 747–749 Elsevier. Copyright © 2004 Elsevier.

It seems obvious now that had we appreciated the full context in which the work reported in the 1998 Lancet paper by Wakefield and colleagues was done, publication would not have taken place in the way that it did. These are difficult judgments to make in hindsight. For example, our sensitivity to potential conflicts of interest is very much
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7 Independent T-Tests

Activity 6

0 hours 20 minutes

This activity introduces the independent t-test – a powerful test to use when you are comparing two groups or conditions. There are two variants of
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4.4 Stages in assignment writing

Activity 5

Note down in your Learning Journal what you think the stages are that you have to go through in producing an assignment, from beginning to end.

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6.3.2 Crystal

Almost all modern gamma cameras use (thallium-doped) sodium iodide (NaI) as the scintillation crystal. A gamma photon interacts with the crystal to produce many photons of visible light.

Sodium iodide is hygroscopic so cannot be left exposed to the air. The front surface is coated with a low atomic number metal that allows the gamma photons to pass through. The rear surface is covered with a transparent coating so that the visible photons can pass through to the photomultiplier tubes.
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Burundi police fire tear gas and water cannon at protesters
Police fire tear gas and water cannon at protesters in Burundi's capital opposed to the president seeking a third term. 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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Learning outcomes

After studying this course, you should be able to:

  • demonstrate knowledge of the electromagnetic spectrum and how it is used to infer properties of sources of radiation

  • demonstrate knowledge of the range of sizes, distances and motions of objects in the Universe and how they can be measured

  • demonstrate knowledge of the structure of, and the main processes operating in, the Sun

  • comprehend concepts lying well outside everyday experience,
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3.1 Processor statistics

In Sections 3.1 and 3.2 you are going to find out a little more about one of the key components of a computer: the processor, which manipulates data according to a list of instructions called a program.

Here is a mini-quiz which explores some facts about processors.

Question 1


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2.3 Conclusion

As I warned you, it has been necessary to introduce here a fair amount of technical detail on North Indian music. You will not need to remember all of this – indeed, apart from a little basic terminology (such as rag and tal), some instrument names (tabla, tanpura) and the name of this genre (khyal), you may not come across any of these terms again in this course. What I hope you will remember is what this has taught you about the way North Indian art music is put together, and what this te
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4.2.11 Neutral citation

In line with the ongoing modernisation of the whole legal system, the way in which cases are to be cited has been changed. Since January 2001 a new neutral system was introduced, and cases in the various courts are now cited as follows (‘EW’ means England and Wales):

House of Lords[year] UKHL case no.
Court of Appeal<
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