3,191 search results

Can renewable energy sources power the world? Badge icon
Science, Maths & Technology

Can renewable energy sources power the world?

...work). Energy is defined as ‘the capacity to do work’ – that is, the capacity to move an object against a resisting force. The scientific unit of energy is the joule. The concept of energy reveals the common features in processes as diverse as burning fuels, propelling machines and charging batteries. These and other processes can be described in terms of diverse...
Could we control our climate? Badge icon
Science, Maths & Technology

Could we control our climate?

...work out how many occurrences we should expect of things happening. For example, you saw in Figure 4 the density at 14°C temperature was approximately 0.18. But because there was one measurement per day in the data set, the distribution is made up of 365 measurements. So, The number of times we expect to get a temperature of 14°C = number of measurements* probability...
Level 1: Introductory 24 hrs
Reading Shakespeare's As You Like It
History & The Arts

Reading Shakespeare's As You Like It

...work, probably written after two of his best-known plays, Henry V and Julius Caesar, and immediately before another, Hamlet. The play is set in two quite distinct worlds – a corrupt ducal court and the pastoral Forest of Arden – and the play’s protagonist is one of Shakespeare’s best-loved characters, Rosalind, a duke’s daughter who notoriously spends most of...
Introduction to music theory 2: pitch and notation
History & The Arts

Introduction to music theory 2: pitch and notation

...working with examples of folk, popular, and classical music from several world traditions. You will learn how pitch is represented using staff notation and other forms of illustration. You will also practise reading and writing pitch using staff notation, and learn to perform short musical extracts from notation...In this free course, you will explore the concept of...
Nine days' wonder in York
History & The Arts

Nine days' wonder in York

...work of sowing by drill was going steadily forward, in the faith that such an unprecedented summer as was now passing would return another year. At all these pleasant labors, of course, the rooks were helping, or at least bossing. II We expected to stay certainly a week, and perhaps two weeks, in York, and our luck with railway hotels had been so smiling elsewhere that we...
The ethics of cultural heritage
History & The Arts

The ethics of cultural heritage

...works of art or architecture – can be very important to society. They can be valued for their beauty, their historic significance, and their religious or cultural associations. We try to protect important heritage, if we can. However, what if we had to choose between protecting heritage and saving human lives? When these goals compete, how should we proceed? In the...
Level 2: Intermediate 12 hrs
Fundamentals of accounting
Money & Business

Fundamentals of accounting

...working out calculations by hand or mentally. The danger, of course, is that you may use a calculator without understanding what an answer means or how it relates to the numbers operated upon. For example, if you calculate that 8% of £20 is £160 (which can easily happen if either you forget to press the percent key or it is not pressed hard enough), you should...
Level 1: Introductory 8 hrs
Data and processes in computing
Digital & Computing

Data and processes in computing

...works. These comments are not peculiar to the fifth till at the supermarket. The supermarket's computer stores data for each active till. The data for each till can be seen as a variable, and so needs its own identifier — such as till1, till2, and so on. Indeed, the term variable is used for any named area of computer memory, storing data that may change. Now suppose...
Level 2: Intermediate 14 hrs