3,165 search results

Neighbourhood nature
Nature & Environment

Neighbourhood nature

...work out how humans changed this landscape, I need to find out what it looked like when they first arrived and that is what botanist Steve Clifton is going to help me do. Wendy There's something really magical about it. How can I begin to tell how old it is? Steve One of the first things to do in a place like this is to look at the vegetation: the trees, the wildlife, in...
Level 1: Introductory 1 hr
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...
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
Explainer: Einstein's Theory of General Relativity
Science, Maths & Technology

Explainer: Einstein's Theory of General Relativity

...work. We said our map could be curved so that the points in the space dimensions were closer together. Since space and time behave together as space-time, the same trick happens for time. If we have some large mass, the curvature in the time dimension means that the more curved the space-time is, the slower a clock ticks there (or appears to for someone in a less curved...