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An introduction to geology
Science, Maths & Technology

An introduction to geology

...analysis and the percentage of different elements can be worked out. But normally it is a combination of methods. There are more indirect routes that don’t look at the elements in the rocks themselves but measure them in the water of streams and rivers. The ‘concentration’ (amount per unit volume or mass) of metals that are found dissolved in stream and river water...
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Level 1: Introductory 12 hrs
Information technology: A new era?
Society, Politics & Law

Information technology: A new era?

...data and historical examples to support economic arguments...Information technology: a new era?: 1 Technological advancement - Everything that can be invented has been invented. (The Commissioner of the United States Office of Patents, 1899, recommending that his office be abolished, quoted in The Economist, 2000, p. 5) There is nothing now to be foreseen which can...
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Level 2: Intermediate 15 hrs
The search for water on Mars
Science, Maths & Technology

The search for water on Mars

...data from the Viking missions was compared with that obtained from the analysis of a group of meteorites (known as SNCs - shergottites, nakhlites, and chassignites named after Shergotty, Nakhla, and Chassigny). These meteorites (such as Figure 18) differed from most other meteorite types known, and their minerals, and chemical composition, suggested they formed from the...
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Level 1: Introductory 5 hrs
The meaning of crime
Society, Politics & Law

The meaning of crime

...data further we are going to ask you now to study a range of statistical evidence. These Tables are derived from the annual government publications, Criminal Statistics and Social Trends. Again these figures relate only to England and Wales (data on Scotland and Northern Ireland may also be found in Social Trends). Activity 5 Examine the statistical Tables below and try...
View course The meaning of crime
Level 1: Introductory 8 hrs
Why would you want to make a bee wear a backpack?
Nature & Environment

Why would you want to make a bee wear a backpack?

...data (if underpowered). Most bee monitoring occurs in carefully-controlled experimental conditions on relatively flat land. Current tracking systems are unable to monitor in landscapes that are anything other than flat as there needs to be a clear line of sight between the receiver and the transmitter attached to the bee. Knowing where and how bees move and die outside...
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Article 5 mins
Will Brexit mean London loses its financial dominance?
Money & Business

Will Brexit mean London loses its financial dominance?

...data. The European Central Bank has already tried banning clearing houses outside the eurozone from trading the euro. But in 2015, the EU’s highest court disagreed. Hence London’s vulnerability may be overplayed: Brexit does not alter the status quo as the UK has never been a member of the eurozone. Insurance is another sector that’s European activity is highly...
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Article 5 mins
Will burnt food give you cancer?
Health, Sports & Psychology

Will burnt food give you cancer?

...data concluded that “dietary acrylamide is not related to the risk of most common cancers”. Although, it added that a modest association for kidney cancer, and for endometrial and ovarian cancers in people who had never smoked, couldn’t be ruled out. Meaty concerns Going back to the barbecue, there are other chemicals in meat that could be a concern. These generally...
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Article 5 mins
Hot forging (closed die)
Science, Maths & Technology

Hot forging (closed die)

...hot former (flashless in steel) 0.5–2˚ General design parameters are similar to those explained in the open die data card (excluding tolerances and draft angles). Flash removal can leave a witness mark that might have to be dressed by grinding or barrelling. See Also: Hot forging (open die), Cold forging, Warm forging, Powder forging and Isothermal precision forging....
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Article 5 mins