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

License information
Related content

Copyright © 2016 The Open University

5.3 Type 2 diabetes

Type 2 diabetes was previously called non insulin-dependent diabetes. People with Type 2 diabetes produce insulin but it may be in insufficient amounts and/or their cells are resistant to the action of insulin (Figure 7). Hyperglycaemic symptoms, such as thirst and passing large amounts of urine, may be absent. Ketoacidosis does
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Dennis_miner_ed_pfizer-mp4 yt.mp4
As a biochemistry and molecular biology major at MSU, Dennis Miner managed to get four years of undergraduate scientific research experience on campus. This helped him obtain a one-year paid internship at Pfizer Global Manufacturing -- a great career stepping-stone
Author(s): No creator set

License information
Related content

1.5 The Galileo mission

It was a long time before the Voyager missions were followed up by more detailed surveys of the outer planet satellites. No Uranus or Neptune missions are planned, but a mission to Saturn called Cassini-Huygens was launched in 1997 for arrival at Saturn in 2004. However, the Jupiter system received a similar visitor first. This was Galileo, launched in 1989, which became the first spacecraft to orbit Jupiter in December 1995. It continued to function through 2002, and was destroyed by plungin
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Ancient Egypt
Ancient Egyptian civilization is one of the greatest in the ancient world, Ancient Egyptian, Greek, Macedonian, Roman, Persian and few other civilizations match the accomplishments of these residents of the Nile River area. A good overview of the gods and the culture. (03:09)
Author(s): No creator set

License information
Related content

6.2 Authority and the variety of information sources

Technology has massively increased the number and variety of news sources that we have access to. We still have printed books, magazines and newspapers, while digital techniques have increased the number of broadcast radio and TV channels that we can get. On the Web we have access to online versions of many of these. This allows us access to media that previously would have been inaccessible.

With traditional news sources such as these, we have some understanding of the authority that t
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Es fácil aprender español : Oefeningensite Spaanse grammatica
esfacil_266.png

Op deze site kun je de vervoegingen van de Spaanse werkwoorden in de verschillende tijden kan oefenen. Ook andere Spaanse grammaticale onderwerpen kunnen ingeoefend worden.


Author(s): No creator set

License information
Related content

Mr. Walrus and the Old School Bus (Read Aloud)
COULD BE USED FOR THE HEARING IMPAIRED ,TOO.  Written by Patricia Derrick. Read by Coach Lon Kruger & performed in American Sign Language by Cassidy Scolpino.Mr. Walrus drives all the friends around town in the old school bus. They make many exciting stops along their way, but they must hurry and not be late for their 5 o'clock date.
Author(s): No creator set

License information
Related content

PES Celebration
This artefact outlines the creation of a new website for Innovation North students holding details of all work placements (short, long term, voluntary, paid).The Institute for Enterprise funded the project and the money helped pay a student to maintain the website for a year
Author(s): Creator not set

License information
Related content

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

Brugoefeningen tot 20 : Hulpmiddel
brugoefening_tot_20.png

Hulpmiddel om leerlingen te helpen die het moeilijk hebben om brugoefeningen tot 20 op te lossen. Leerlingen splitsen het tweede getal en ze kunnen de oefeningen visueel voorstellen in een 10-rooster.


Author(s): No creator set

License information
Related content

Ballooning CVS01_01_045

*

Tales of balloon flight. A hand-coloured engraving of a balloon flying through clouds at sunrise. From the Cecil Victor Shadbolt collection of lantern slides dating from 1882-1892.
© Historic England


Author(s): No creator set

License information
Related content

Introduction

The issue of ‘citizenship, work and the economy’ is often neglected in everyday discussions of citizenship. But a moment's reflection should demonstrate how important it is. The vast majority of us will spend the bulk of our adult lives working in some context or another, and our engagement with economic activity more generally is obvious (and not just as consumers).

Many young people are also intimately tied up with work. School children often have part-time evening, weekend or ho
Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

2.4 Period

You saw in Section 2.3 that the prongs of the tuning fork vibrate cyclically. You also learned that a cycle of the prongs' vibration is a complete sequence of motion up to the point at which the motion starts to repeat itself. Another term for this repetitive kind of motion is periodic motion. The t
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

References

Bailey, R.W. (1982) Human Performance Engineering:A guide for systems designers, New Jersey, Prentice Hall.
Blackler, A., Popovic, V. and Mahar, D. (2003) ‘Intuitive use of products’, Design Studies.
Jordan, P. (2000) Designing Pleasurable Products, London, Taylor and Francis.
Norman, D. A. (1998) The Design
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Radio & telecommunications masts
Description not set
Author(s): Richard Greenwood

License information
Related content

Rights not set

4.1 The experimental result

One way to establish the speed of sound is to measure it experimentally. That is, one measures how long the sound takes to travel a known distance, and from this works out the speed. The answer turns out to depend somewhat on the prevailing temperature and humidity. At an air temperature of 14 °C the speed is 340 metres per second and at about 22.5 °C it is 345 metres per second. That is a change of speed of less than 1.5 per cent for an appreciable change of temperature. To a reasonable ap
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

5.1 The development of the bicycle

Section 4 has looked at how we can follow a logical route or map, from the expression of a need, to arrive at possible solutions to a problem. In Sections 5 and 6 we look in more detail at two quite different examples of engineering problems. Our first example is the historical development of the bicycle frame; the second concerns a vital component of a car's airbag system.

The weight of a bicycle frame is a major burden that the cyclist has to bear. There have certainly been times whe
Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

3.3 Limited positive characterization

The painted portrait was, however, perceived to be more than a mere ‘map of the face’. It was also meant to reveal aspects of the inner as well as the outer being.

Figure 10

Author(s): The Open University

License information
Related content

Copyright © 2016 The Open University

Learning outcomes

After completing this unit you will have a basic understanding of:

  • how the legal system in the UK works;

  • how laws are made in the UK;

  • some of the key players in UK law enforcement;

  • different ways of taking notes.


Author(s): The Open University

License information
Related content

Copyright © 2013 The Open University

Conservation of Energy Problem with Friction, an Incline and a Spring by Billy
Billy helps you review Conservation of Mechanical Energy, springs, inclines, and uniformly accelerated motion all in one example problem. Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:
0:10 The problem
0:38 Listing the known values
1:40 Using Conservation of Mechanical Energy
2:56 Canceling out the Mechanical Energies which are not there
4:18 Drawing the Free Body D

Author(s): No creator set

License information
Related content