3.4.3 Simulated environmental tests

The investigators wanted to know about the fatigue properties of the component, to find a feasible explanation of why it took 39 years for the eye bar to break. They needed information on the several stress corrosion mechanisms that were possible in the material, including hydrogen embrittlement, the effects of sulphur compounds such as H2S (hydrogen sulphide) and the effects of moisture and salt. Notched eye-bar material was loaded to failure in various environments.

In fact
Author(s): The Open University

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Babbage: The evolution of bromance
Host Jason Palmer ​asks Natasha Loder if scientists are getting ever closer to the fountain of youth in pill form. Richard Wrangham explains why men are more touchy-feely than women after competitive sport. A​nd Matt Kaplan ​examines how one sea creature's means​​ of self-repair​​ ​​could help humans with damaged hearing
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Photon Momentum
OpenStax College
Relate the linear momentum of a photon to its energy or wavelength, and apply linear momentum conservation to simple processes involving the emission, absorption, or reflection of […]

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3.2.1 Remarks

  1. By ‘contains’, we mean that we can find part of the surface that is homeomorphic to a Möbius band. The edge of the Möbius band does not need to correspond to an edge at the surface, so that a surface without boundary can be non-orientable (as we shall shortly see).

  2. When seeking Möbius bands in a surface, it can be helpful to look at all possible closed curves on the surface and thicken these into bands.

  3. Remember, fro
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The Week in Review: February 20, 2016

Is it time to abolish the Supreme Court? This was the question Ryan McMaken asked following the death of Justice Antonin Scalia. While the high court may have been created with the lofty ideals of being above the political fray, the desperate scrambling of politicians on both sides of the isle illustrates how broken and partisan the court has become in practice. As Jeff Deist notes, the increased centralization of the rule of law has seen the court play a role in further dividing the country.
Author(s): Mises Institute

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Rights not set

Snow bells DP130634

*

Whitechapel Bell Foundry, Tower Hamlets, London. Bells in courtyard.
© Historic England


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Learning outcomes

After studying this course, you should be able to:

  • demonstrate an awareness of knowledge, attitudes and feelings in each subject area

  • identify, in each subject, areas of knowledge where a deepened understanding is or is not required

  • understand more fully the place that language, mathematics and science have in the everyday life of individuals and societies.


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6 Population growth

Earlier it was stated that three factors check population growth. These are predation, disease and insufficient food supply. For much of our history, our ancestors’ numbers were indeed limited by wars, disease and famine. The world population remained relatively stable until around 300 years ago. Then at the beginning of the 19th century (100 years after population growth started its geometric increase), the demographer Thomas Malthus predicted that population growth would outstrip food pro
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2.1 Trophic levels

'All flesh is grass'; this somewhat paradoxical biblical quotation really is only a restatement of what was more formally explained in previous units in this series. The materials needed by plant eaters (see course S182_4) for the growth of 'flesh' - by which I mean not just the meaty muscular parts, but all of the body - must come entirely from their plant food. Plants grow using the Sun's energy in the process of photosynthesis. Plants occupy the lowermost of a succession of feeding levels,
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MSRP Dinner 2
Renetta Tull Recorded 6/18/2015 W20-301
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3.4 Systems concepts: structure

As suggested earlier, the structure of a system is its functional or physical arrangement; the term that is often used in systems engineering is ‘architecture’. The architecture of a system can be deconstructed to reveal its constituent elements. I suggested in Section 1 that an existing knowledge base has an important bearing on the way in which a change problem is perceived. The way that this is conceived by one armaments system integrator is illustrated in
Author(s): The Open University

Herhalingsbundel bij Blok 10 - Nieuwe Pluspunt 5
nieuwepluspunt.jpg

In de bundel zijn oefeningen opgenomen waarin een herhaling wordt aangeboden na blok 10 van Nieuwe Pluspunt 5. 


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9.3 Linear notes

This is the most common form of note-taking. It involves writing in sequence the points you want to note. As with all note-taking, the aim is to pick out and record the most important points. Avoid simply writing out most or all of the text again.

Try to write your notes in your own words as this will help you understand what you have been reading about. Also add a reference to which page(s) of the text your notes refer so you can easily find your way back to the relevant part of the te
Author(s): The Open University

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2.1 The importance of sine waves

For much of the rest of this unit we shall be concerned with the properties of a type of sound wave that when represented as a graph has a characteristic shape known as a sine wave. Figure 1 shows you what a sine-wave graph looks like. For the moment you need not be concerned with what this grap
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Van leRensbelang : Eindtermen onderwijs
Schermafbeelding_2016-02-04_om_11.03.55.png

Onze samenleving verandert in hoog tempo en ons onderwijs moet volgen.

De Vlaamse overheid wil de komende vijf maanden zoveel mogelijk mensen en organisaties de kans bieden om bij te dragen aan het debat over de herziening van de eindtermen.


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Water in Ethiopia
In Ethiopia, 65% of people don’t have access to clean drinking water. In this album we take a glimpse at the struggles Ethiopians go through each day, just to survive. We look closely at the different methods used to improve the quality of life in the rural highlands as well as the conflict between neighbouring farming villages attempting to share the same water supply. This material forms part of the course U116 Environment: journeys through a changing world.Author(s): The iTunes U team

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Except for third party materials and otherwise stated (see http://www.open.ac.uk/conditions terms and conditions), this content is made available under a http://creativecommons.org/licenses/by-nc-sa/2

Koop ik een auto?
cover_koop_ik_een_auto.png

Aan de hand van een uitgebreide case wordt stap voor stap ingegaan op de nood aan een wagen, alternatieve vervoersmiddelen, het totale kostenplaatje en de financiering van een wagen.

Deze oefening past binnen financiële vorming en meer …


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Reframing Human Rights in the Global Era:a tribute to Sérgio Vieira de Mello
"Reframing Human Rights in the Global Era: a tribute to Sírgio Vieira de Mello", delivered by the former president of Brazil, Dr Fernando Henrique Cardoso as part of the British Council's series of lectures on "Raising Human Rights Awareness".
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1.5.2 Metamorphic recrystallisation

To consider metamorphic recrystallisation at its simplest, let's begin by imagining a sedimentary rock composed entirely of quartz grains – a quartz sandstone. Sandstone is a sedimentary rock and so has a fragmental texture (see Figure 7b). When it is subjected to high temperature and high pressure
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1.5.1 Causes of metamorphism

Activity 5

What natural process could cause a rock to be heated?

Answer

Heating can be caused when hot magma is intruded into a cool rock.
Author(s): The Open University

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