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Digital communications
Digital & Computing

Digital communications

...double reflection (Figure 12) results in a delayed copy of the transmitted signal reaching the receiver. This delayed signal can result in an apparently disproportionately large amount of noise due to interference effects between the direct and reflected optical fields. Reflections are not normally a problem with splices, but techniques to minimise reflections have...
View course Digital communications
Level 3: Advanced 20 hrs
Robert Owen and New Lanark
History & The Arts

Robert Owen and New Lanark

...doubling as a church), and improving communications with the neighbourhood. On a point of information, quite fascinating really, the ‘immediate removal of the tables to the ceiling’ was to be accomplished by means of hoists. This method of saving space was actually used elsewhere and it can be observed in the schoolroom scene (see Plate 2, linked below) where the...
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Level 2: Intermediate 12 hrs
Political ordering
Society, Politics & Law

Political ordering

...circulate in society. These particular headlines imply a state that is overbearing and intrusive in everyday life, and they are used precisely because this is one image of the state that has resonance for many people. There is, however, a headline that talks about state help, and this suggests another idea of the state that supports its citizens with childcare or...
View course Political ordering
Level 1: Introductory 10 hrs
Decision trees and dealing with uncertainty
Money & Business

Decision trees and dealing with uncertainty

...doubles the combinations (i.e. 2 × 2 × 2 = 23 = 8) finally, the last coin makes it 16 (i.e. 24) as there are 4 coins, each of which may be heads or tails, then there are 4 combinations with 3 heads and one tail, so, the probability is: four divided by 16 equals 0.25 . In Activity 3, you will apply your understanding of probabilities in considering a different scenario....
View course Decision trees and dealing with uncertainty
Level 3: Advanced 5 hrs
Beginners’ German: Places and people
Languages

Beginners’ German: Places and people

...double ‘s’ and is pronounced like an ‘s’. At this stage, all the German you need to use is presented in the audio clips. Listen to the words and phrases and try to imitate the pronunciation of the speakers. You will find that German pronunciation becomes very easy to predict after a while. As the course progresses, you will be introduced to some of the rules and...
View course Beginners’ German: Places and people
Level 1: Introductory 5 hrs
Beginners’ German: food and drink
Languages

Beginners’ German: food and drink

...double- s after long vowel sounds in words like Weißbrot (white bread) and Straße (street). Activity 11 You have come across quite a few words containing ch in the previous activities, such as Milch and Brötchen. This ch should sound like the ‘h’ in ‘human’. Practise your pronunciation as you listen and repeat what you hear in the recording. You may find it...
View course Beginners’ German: food and drink
Level 1: Introductory 6 hrs
Exploring economics: the secret life of t-shirts
Society, Politics & Law

Exploring economics: the secret life of t-shirts

...double that of Brazil...Exploring economics: the secret life of t-shirts: 2.1.2 International trade figures - Another reliable source of data is trade data, which is available from the World Trade Organisation, the World Cotton Map Report, the Trade Map and the MIT Atlas websites. Trade data is often shown in nominal terms, that is, in terms of amount of money spent on...
View course Exploring economics: the secret life of t-shirts
Level 1: Introductory 6 hrs
Geometry
Science, Maths & Technology

Geometry

...double arrowheads). Calculate the angles α and β. Answer Line l is parallel to line m, therefore α and the angle 60° are corresponding angles. So α = 60°. The angles 60° and θ are vertically opposite angles. So θ = 60°. Line r is parallel to line s, therefore θ and β are corresponding angles. So β = 60°...Geometry: 1.4.2 Alternate angles - Other pairs of...
View course Geometry
Level 1: Introductory 5 hrs