3,392 search results
Solving the perplexing mathematicians' problem of the spectre
Science, Maths & Technology

Solving the perplexing mathematicians' problem of the spectre

...out more about The Open University's Mathematics courses. Periodic tiles Imagine tiling your bathroom with square tiles. Square tiles will fit together perfectly to cover the whole wall. In fact, if you had infinitely many square tiles, you could use them to cover an infinite flat surface. The downside is that the pattern is quite boring. In fact, if you take a copy of...
View article Solving the perplexing mathematicians' problem of the spectre
Article 5 mins
From old English to modern English
History & The Arts

From old English to modern English

...out more about The Open University’s Language Studies qualification. How and why has English changed over time? In this brief introduction to the subject, I will show how we can look at the history of a language in two main ways: externally – where, why and by whom the language was used; the political and social factors causing change – and internally – the...
View article From old English to modern English
Article 10 mins
Introduction to differential equations
Science, Maths & Technology

Introduction to differential equations

...overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity. Don't miss out If reading this text has inspired you to learn more, you may be interested in joining the millions of people who discover our free learning resources and qualifications by visiting The Open University – www.open.edu/ openlearn/ free-courses....
View course Introduction to differential equations
Level 1: Introductory 18 hrs
Should I lock in my exchange rate when using cards and ATMs abroad?
Money & Business

Should I lock in my exchange rate when using cards and ATMs abroad?

...out of three explain why so many international travelers act the way they do. The first function of money is a unit of account, which is how people post and keep track of prices. This is why banks and credit card companies get people to agree to pay in the currency where they live, instead of using local money. When people travel to a country with a different currency,...
View article Should I lock in my exchange rate when using cards and ATMs abroad?
Article 5 mins
Second-order differential equations
Science, Maths & Technology

Second-order differential equations

...overlooked, the publishers will be pleased to make the necessary arrangements at the first opportunity. Don't miss out If reading this text has inspired you to learn more, you may be interested in joining the millions of people who discover our free learning resources and qualifications by visiting The Open University – www.open.edu/ openlearn/ free-courses....
View course Second-order differential equations
Level 2: Intermediate 16 hrs
DNA Profiling
Science, Maths & Technology

DNA Profiling

...out using an automated machine called a thermal cycler, which as its name suggests is able to undertake the necessary cycles of heating and cooling. Once a PCR procedure has finished, and a specific DNA sequence has been amplified, the results have to be analysed. There are several ways of doing this. A common method is to use a technique called gel electrophoresis in...
View article DNA Profiling
Article 10 mins
Children and ethnicity
Education & Development

Children and ethnicity

...out to have little significance in another. Particular ethnic groups therefore tend to emerge and change over time as a consequence of particular social and political developments. There are two common misconceptions about ethnicity. Firstly, we tend to think of ethnicity in Britain as being mainly about ‘race’ and skin colour. However, there are many ethnic groups...
View article Children and ethnicity
Article 10 mins
The First World War continues: Britain’s dash for Mosul, Iraq, November 1918
History & The Arts

The First World War continues: Britain’s dash for Mosul, Iraq, November 1918

...out of the Sinai Peninsula, and invaded Palestine then Syria, reaching Aleppo in late October 1918. In the Hijaz, in western Arabia, Sharif Hussein of Mecca launched the Arab Revolt, aided by British officers such as T.E. Lawrence. Further south, Ottoman troops pinned down a British force in Aden until the end of the war. The original objective of what became known as the...
View article The First World War continues: Britain’s dash for Mosul, Iraq, November 1918
Article 15 mins