Hearing Yourself Hear
Listen in as Artist Jacob Kirkegaard tells of his journey to hear himself hear. With the aid of researchers in Copenhagen, Kirkegaard generates an artificial tone in his own ear by playing two tones at a precise ratio. He has developed this phenomenon into an interactive sound piece he calls Labyrinthitis.  (07:13)
Author(s): No creator set

License information
Related content

George H.W. Bush - Mini-Biography
A World War II veteran, George H.W. Bush served as Vice President for two terms before being elected President of the United States in 1988. (04:35)


Author(s): No creator set

License information
Related content

4.2 Reactor safety: the Chernobyl incident

By far the worst nuclear reactor accident took place on 26 April 1986 when one of four 1 GW reactors at Chernobyl in the Ukraine released a radioactive cloud over Europe (Figure 17). (See S278 video clips document.) The build-up to this accident has been related to a series of complex chemical reactions induced
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

2.2 Nuclear fission

Every atom has a nucleus consisting of positively charged protons and electrically neutral neutrons. Protons and neutrons have virtually identical mass and the total number of protons and neutrons defines the mass number of a particular atom. The number of protons in the nucleus is the atomic number and this quantity is always the same for each particular chemical element. However, some elements have several isotopes, each with different numbers of ne
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

1.6.2 The equations of uniformly accelerated motion

Equations 22, 23 and 24 provide a complete description of uniformly accelerated motion. By combining them appropriately, it is possible to solve a wide class of problems concerning the kinematics of uniformly accelerated motion. Nonetheless, those particular equations are not always the best starting point for the most common problems. For example, it is often the case that we want to know the displacement from the initial position after some specified period of constant acceleration, rather
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

2.1 Introduction

Europa's surface is fascinating, if often perplexing, to study. One of its special characteristics is its brightness. It has an albedo of 0.7, which is exceeded among icy satellites only by Enceladus and Triton. (The ‘albedo’ of a body is simply the fraction of the incident light that is reflected. The higher the albedo, the more light is reflected, and the brighter the body appears.) Overall brightness is one indicator of the youth of an icy surface: the brighter the icy surface, the you
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

1 The omnivores

As you work through this unit you will come across boxes, like this one, which give you advice about the study skills that you will be developing as you progress through the unit. To avoid breaking up the flow of the text, they will usually appear at the start or end of the sections.

As well as the un
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

Learning outcomes

By the end of this unit you should be able to:

  • describe some of the characteristic features of carnivores;

  • outline the dentition of carnivores and its link with diet;

  • outline some of the behavioural and sensory characteristics of carnivores, with examples;

  • explain, with examples, the roles that vision and smell play in the lives of carnivores;

  • explain the variety of ways in which carnivores assemble in groups;

  • <
    Author(s): The Open University

    License information
    Related content

    Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

8.3 Shortage of minerals

You may be familiar with salt licks that are provided for domesticated cattle. In the wild, grass is also often low in minerals (e.g. it has almost no sodium and very little calcium), so grazers may have to go to extraordinary lengths to supplement their diet with additional minerals obtained from the most unlikely places. LoM gives some examples, but the most impressive activity takes place in the caves of Mount Elgon in Kenya [pp. 113–114]. You'll probably recall this spectacular footage
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

2.3 The study of a raindrop

Most of the usable water is derived from the 1.1 × 105 km3 that falls over the land surface each year as rain, snow, sleet or hail. The collective term for all of these sources of water is precipitation. At this point, you will consider the size of the drops of water that make up clouds or rain (Figure 5).

Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

3.2 The anatomy of the language system

Perhaps the best-known generalisation about the language system is that it is represented on one side of the brain – usually the left – more than the other. Many lines of evidence support this view. Specific impairments to linguistic abilities are known as aphasia, and aphasia results much more often from damage to the left hemisphere of the brain than from damage to the right. It is also possible to temporarily deactivate one or other hemisphere. This is usually done as an investi
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

3.6 Synaptic transmission from hair cells

In addition to being sensory receptors, hair cells are also presynaptic terminals. The membrane at the base of each hair cell contains several presynaptic active zones, where chemical neurotransmitter is released. When the hair cells are depolarised, chemical transmitter is released from the hair cells to the cells of the auditory nerve fibres. Excited by this chemical transmitter, the afferent nerve fibres contacting the hair cells fire a pattern of action potentials that encode features of
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

2.1 Structure and function of the outer and middle ear

Figure 1 is a diagram of the human ear. The outer ear consists of the visible part of the ear or pinna, the external auditory canal (meatus), and the tympanic membrane (tympanum) or eardrum. The human pinna is formed primarily of cartilage and is attached to the head by muscles and ligaments. The deep central portion of the
Author(s): The Open University

License information
Related content

Except for third party materials and/or otherwise stated (see terms and conditions) the content in OpenLearn is released for use under the terms of the Creative Commons Attribution-NonCommercial-Share

Super Absorbent Polymers
Students develop a video project in Chemistry class to demonstrate how science ideas can be very helpful in our society. The video is a student-made project is about super absorbent polymers.  It focuses on the example of the disposable diaper, gives a brief history of the invention of the diaper, and provides an explanation of how it connects to polymers. Some audio is poor. Run time 03:57.
Author(s): No creator set

License information
Related content

Darwin Now Awards
Janice Ansine is a recipient of a Darwin Now Award. She is currently working on a variety of projects in Jamaica, looking at contemporary responses to Darwin and Into the historic role of Jamaica in providing material for his research.
Author(s): No creator set

License information
Related content

Series - the ratio test
This video describes how to use the ratio test to determine whether a series converges or diverges.
Author(s): No creator set

License information
Related content

Radio Lingua Network News: 26 September 2008
Happy European Day of Languages to all our listeners! By way of joining in this international celebration of languages and language-learning we're delighted to introduce eight new podcasts today. We're adding Catalan, Danish, French, Japanese, Mandarin and Romanian to our One Minute Languages series; we're introducing our first podcast for English learners - Write Back Soon will help learners master Phrasal Verbs; and we're finally announcing the long-awaited sequel to Coffee Break Spanish: it's
Author(s): No creator set

License information
Related content

Promo - One Minute Romanian
Hello! My name is Roxana and I'd like to welcome you to One Minute Romanian from the Radio Lingua Network. In this podcast I'm going to be teaching you the basics of Romanian. The great thing about this language course is that you'll be learning all you need to know in just 60 seconds - or thereabouts! Each one minute language lesson will equip you with just enough Romanian to help you get by in lots of situations, either on holiday, or on a business trip to Romania, or just to impress your Roma
Author(s): No creator set

License information
Related content

The economic future of British cities: what should urban policy do? [Audio]
Speaker(s): Professor Henry G. Overman, Alexandra Jones, Adam Marshall | Britain’s cities are facing profound challenges – both in the short run as a result of the recession and in the long run as a result of underlying structural change. In this lecture Henry Overman considers the nature of these challenges and considers what urban policy should do to help cities effectively respond to them. Henry Overman is Professor of Economic Geography at the LSE and Director of the Spatial Economics Re
Author(s): No creator set

License information
Related content