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6.1.4 Controlling the machine

The major task of a washing machine microcomputer is to control the actions of the machine in accordance with the wash programme selected. To do this, the computer is electrically attached to a variety of:

  • actuators that cause mechanical parts of the system to work;

  • sensors that sense the state of some aspect of the machine, such as water temperature.

There is an actuator to open or close the water input val
Author(s): The Open University

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History of Presidents' Day
A fascinating history of Presidents' Day and why it is important. (02:31)
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5.12 Organic Chemistry I (MIT)
5.12 is an introduction to organic chemistry, focusing primarily on the basic principles to understand the structure and reactivity of organic molecules. Emphasis is on substitution and elimination reactions and chemistry of the carbonyl group. The course also provides an introduction to the chemistry of aromatic compounds.
Author(s): Tabacco, Sarah,Imperiali, Barbara

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

5.8 Additional treatment

As a result of strict standards set by the EU Directive on the Quality of Drinking Water, it is now often necessary for drinking water to have further treatment to remove components such as nitrates and trace of organics.


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Geology Kitchen #9 - Plate Tectonics
This episode discusses the scientific theory of plate tectonics, in which the Earth’s crust is subdivided into a series of large and small tectonic plates. Convergent, divergent or transform boundaries are discussed and demonstrated with brittle graham crackers and icing to illustrate the motions of the plates at these boundaries.   A second demonstration consisting of heating cream in a pan, representing convecting upper mantle, driving a relatively brittle layer of cocoa powder
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The Journal of Henry David Thoreau
Henry David Thoreau is justly famous for his book "Walden," which tells the story of the two years he spent living by the pond, in the Concord woods. But he also wrote a journal, which he started at age 20 in 1837, and kept up until 1861, shortly before he died. This diary of Thoreau's daily thoughts and this five minute video highlights his life. 
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1.2 Real numbers

The rational and irrational numbers together make up the real numbers. The set of real numbers is denoted by . Like rationals, irrational numbers can be represented by decimals, but unlike the decimals for rational numbers, th
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2.2 Europe as a sequence of ideas (continued)

Europe after the Cold War

The ‘Europe’ of the second half of the twentieth century (limited for much of that period to the countries of the democratic West, and then not to all of them) had been founded on values of peace and mutual security; this was in full recognition of the dire consequences of established patterns of European nationalism and nationality-based politics mor
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2.1 Definitions

In this section we introduce an alternative way of describing points in the plane 2 or in three-dimensional space Author(s): The Open University

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3.016 Mathematics for Materials Scientists and Engineers (MIT)
This course covers the mathematical techniques necessary for understanding of materials science and engineering topics such as energetics, materials structure and symmetry, materials response to applied fields, mechanics and physics of solids and soft materials. The class uses examples from the materials science and engineering core courses (3.012 and 3.014) to introduce mathematical concepts and materials-related problem solving skills. Topics include linear algebra and orthonormal basis, eigen
Author(s): Carter, W. Craig

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative C

How to Set Up a Web Camera
In order to set up a Web camera, a person will need a camera, a USB port and the driver disc that comes with the camera. Find out why some drivers must be installed before plugging in a Web cam.
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McWilliam - Elisabeth Frink DP178239

*

Portrait figure of Elisabeth Frink (1956) by Frederick Edward McWilliam, West Walk, Town Centre, Harlow, Essex. General view from the east. Photographed by Steven Baker 2015.
© Historic England


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Learning outcomes

After studying this course, you should be able to:

  • write whole numbers and decimals in place-value columns and compare their sizes

  • multiply and divide whole numbers and decimals by 10, 100, 1000 and so on

  • indicate given fractions on a diagram and find equivalent fractions for a given fraction

  • mark numbers on a number line

  • choose appropriate units for a given purpose.


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4.3 Physical grounds for thinking we are immortal

In section III Hume discusses what he calls physical reasons for thinking there is an afterlife. A sensible guess as to what he means by a physical reason is that it is one based on observation and experience of the physical world. He begins by asserting that physical reasons are the ones he has most respect for. (This assertion is unsurprising: his objections to moral reasons, and the metaphysical reasons we skipped, turn on the allegation that they depend on claims that go beyond wha
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1.1 Mathematics and you

Many people's ideas about what mathematics actually is are based upon their early experiences at school. The first two activities aim to help you recall formative experiences from childhood.

Activity 1 Carl Jung's school days

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Digital Camera for Elementary School Teachers
Digital Camera for Elementary School Teachers
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Rights not set

What about infant baptism?
Describes what baptism means at the time it is done, when they are baptized as infants.
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1 Capturing sound

Have you ever listened carefully to a recording of your own voice?

In this first activity, I want you to make a short recording of your voice.

Activity 1 (Optional)

Note: This optional activity requires the use of a
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Israeli military releases video of so-called "terror tunnel" entrance
The Israeli military releases footage it says shows the entrance to so-called "terror tunnels" linking Gaza with Israel. Israel says no ceasefire in the assault on Gaza can take place until all such tunnels are destroyed. Rob Muir report. 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 glob
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5.5.3 Present information effectively

Organise your information so that you can use it to illustrate and support your arguments or point of view. To do this successfully, you must be clear about what you want to say, and how you want your audience to interpret your information. Ensure that any illustrations, graphs, diagrams and charts are correctly labelled and that you have met any particular requirements for presentations. Use the word-count facility of your word processor to help you keep within limits. Remember to proofread
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