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3.3 Magnetic tape recorders

Experiments showed that the use of paper tape coated with iron oxide particles significantly improved the signal-to-noise ratio and enabled a lower tape speed to be used. A plastic-based version of this magnetic tape, developed by the German company BASF, led to the development of a commercial tape recorder with audio characteristics that could nearly match those of the gramophone record, but not at an economical price. Secret work on tape recorders was undertaken by the Germans throug
Author(s): The Open University

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Ocean Tides
Tides are the rise and fall of the ocean's surface. Learn more about ocean tides in this educational video. The video briefly explains the causes of the tides, types of tides, and how often a tide occurs. More videos about tides can be found under the category and subcategories of Astronomy/Solar System/Earth's Moon/ Moon and Earth's Tides.  (00:55)
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6.2 Alerts

Online bookshops and some of the major search engines offer 'Alerts' services. These work by allowing you to set up a profile once you have registered on their site, and when there are items meeting your criteria you receive an email. The good thing about alerts is that you don't have to do anything once you have set up your profile. The downside, particularly with alerts services from the search engines, is that given the extent to which internet traffic is on the increase whether new web pa
Author(s): The Open University

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4.2 DDT: a classic case in ecotoxicology

DDT is very effective in controlling pests, being very toxic to insects, and is cheap to produce. Its effectiveness is enhanced because it is very persistent, remaining active in the environment for a long time. This increases its value as an insecticide to farmers because one application lasts a long time, but is also a major reason why it poses a threat to wildlife and to human health. Although the agricultural use of DDT was banned in most developed countries 30 years ago, it can still be
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8.3 Academic arguments

You have looked at some examples of everyday arguments, now look at a short example of an academic argument.

Activity 26

Read the argument below. Compare and contrast it to the previous examples of arguments you
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TALAT Lecture 5102: Reactivity of the Aluminium Surface in Aqueous Solutions
This lecture provides better understanding of the electrochemistry of aluminium; it gives an introduction to the other lectures. Some knowledge in aluminium metallurgy, simple chemistry (thermodynamics and kinetics), electricity and general electrochemistry is assumed.
Author(s): TALAT,H Terryn, Vrije Universiteit Brussel (VUB)

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Hypertext Between Research and Teaching: An Experience in a Didactic Building Technology Laboratory
IPER (hypertext for the knowledge of building patrimony) is the result of a research developed with C.N.R. (National Research Institute). The aim of IPER is to provide the knowledge, the description and the management of one or more historical buildings for public or private institutions. IPER allowed us to improve our methodology of building analysis, covering various disciplinary fields, in two different systems. (1.) the first one, synthetic and suitable for a group of historical buildings, (
Author(s): Amirante, Isabella and Bosco, Antonio

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Rights not set

Resource #16612
UNSPECIFIED - UNSPECIFIED Keywords:UNSPECIFIED
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Numbers in German
Learn to count from one to twenty in german by watching this video.  You will hear the number in German and see the German word on the screen and then the word in English will appear on the screen.  This is great for beginning language learners.
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Conclusion

This free course provided an introduction to studying Languages. It took you through a series of exercises designed to develop your approach to study and learning at a distance, and helped to improve your confidence as an independent learner.


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6 Conclusion

  • A discrete exotic terrane refers to a large crustal fragment that can be recognised by its distinct sedimentary, igneous, metamorphic and structural history compared with that of its eventual neighbours, and has been juxtaposed into position by major strike–slip faults.

  • Nine discrete exotic terranes make up the Basement in the British Isles. These consist primarily of Precambrian metamorphosed rocks but also contain some unmetamorphosed sedi
    Author(s): The Open University

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9.2 Background

Bellaby, P. (2003) ‘Communication and miscommunication of risk: understanding UK parents' attitudes to combined MMR vaccination’, British Medical Journal, 327, 27 September 2003, pp. 725–28. Reproduced by permission from the BMJ Publishing Group; Mary Evans Picture Library Ltd; P A Photos.

In 1998 Wakefield was the first to make the claim that autism and the MMR vaccine are linked.1 It is based on a dozen clinical cases of gastrointestinal disorders with w
Author(s): The Open University

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1.5 Differing perspectives

Closely related to representation of religion is the recurring issue of differing perspectives. In talking about perspectives here, we are thinking about how we look at something. We rarely approach anything neutrally – either consciously or subconsciously we tend to adopt a particular perspective – and how we look at something affects what we see. Whenever we make assumptions, we impose them on events, phenomena and other people. This is as true for scholars examining religion as
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4.3 Responses to religion

Reasoned responses to religion could take many forms. It was rare for writers to profess outright atheism; even in those cases where we may suspect authors of holding this view, censorship laws made their public expression unlawful. These laws were particularly stringent in France. In many cases reasoned critique was applied to the practices of institutional religion, such as the corruption of the clergy or the rituals of worship, rather than to more fundamental matters of doctrine or faith.
Author(s): The Open University

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Summary of Section 3

  1. Watson–Crick base pairing arises due to hydrogen bonding between A and T and G and C and spatial limitations within the hydrophobic core of the helix.

  2. DNA commonly folds into the B-form helix; other forms such as Z-DNA form in vitro. A-form helices are formed primarily by duplex RNA.

  3. The twisting of DNA around its helical axis results in torsional stresses that promote the formation of high-energy alternative confo
    Author(s): The Open University

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Virtual Maths, Brick Density, Water Displacement method video
Video demonstrating how to measure the density of a brick using the water displacement method.
Author(s): Leeds Metropolitan University

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5.5 Copyright - what you need to know

An original piece of work, whether it is text, music, pictures, sound recordings, web pages, etc., is protected by copyright law and may often have an accompanying symbol (©) and/or legal statement. In the UK it is the Copyright, Designs and Patents Act 1988 which regulates this.

In most circumstances, works protected by copyright can be used in whole or in part only with the permission of the owner. In some cases this permission results in a fee.

However, the UK legislation incl
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3.3 What were the fundamental human rights which required protection?

Earlier in this course you explored why certain rights were considered to be basic human rights. These can be described as those rights of individuals or groups relating to human dignity and fundamental freedoms, which require legal protection from adverse interference by the state, where those rights derive from the fact of being human. Such rights can be traced back to two aspects of international law, namely customary international law and treaty law. The former derives from the customs ad
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Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to choose from on
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What Is Rococo Art?
Learn about Rococo art with information from an art historian, critic and curator in this video. Rococo art was created upon the end of the Baroque period, and it is characterized by intentional visual redundancy, elaborate filigree, gold leaf, rosy nudes and romantic images. (1:38)

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