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An introduction to geology
Science, Maths & Technology

An introduction to geology

...liquid rock (called ‘magma’) cools to form a solid rock. Cooling of magma can happen deep inside huge mountain chains such as the Andes, where granite might form. When the magma rises towards and through the Earth’s surface, to produce a volcanic eruption, rocks such as basalt, rhyolite (volcanic glass) and even pumice can be produced...Week 1: Building stone: 1.1.2...
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Level 1: Introductory 12 hrs
Chemical vapour deposition (CVD)
Science, Maths & Technology

Chemical vapour deposition (CVD)

...solid, corrosion resistant coating is deposited onto those surfaces. ...Cold wall system [Images to demonstrate 'Chemical Vapour deposition (CVD)' - see article ] [Diagram showing the Cold Wall System] Hot wall system [Images to demonstrate 'Chemical Vapour deposition (CVD)' - see article ] Manufacture: A “high” temperature process. Cheaper, more suitable for...
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Article 10 mins
Approaching the break up of Britain?
Society, Politics & Law

Approaching the break up of Britain?

...solid leave majorities. This led Anthony Barnett (in his book, The Lure of Greatness: England’s Brexit and America’s Trump), to argue that the vote revealed that ‘There are five parts to the UK: Scotland, Northern Ireland, Wales, London and England-without-London’, and he went on to conclude that ‘England-without-London swung the outcome. It voted by a majority...
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Article 5 mins
Laser beam welding
Science, Maths & Technology

Laser beam welding

...Solid-state lasers pulse by turning the flashlamps on and off or by "Q-switching" (Nd-YAG), where an optical shutter opens and closes to give a pulsed output. Laser and gas tungsten arc welding are combined in the "laser-GTA" welding process, which gives increased joint penetration and arc stability, particularly when welding copper and aluminium at high speeds. The GTA...
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Article 10 mins
How to read the news
Society, Politics & Law

How to read the news

...solid background in news journalism, or whether they mostly post provocative stories meant to attract attention on social media. You may even want to think about any preconceived ideas you have about the author, and whether these are likely to affect how you interpret the article. With respect to publishing organisations, from newspapers to social media accounts, it can...
View article How to read the news
Article 5 mins
Strange job: being Queen Elizabeth II, Britain’s longest reigning monarch
Society, Politics & Law

Strange job: being Queen Elizabeth II, Britain’s longest reigning monarch

...solid in 1952, is now hemmed in by a recast, revitalised civil society. Publicity and power When Elizabeth was in her 20s she could rely on a retinue of court advisers who controlled a switchboard to media reporting. Now, as she approaches 90, the media is ubiquitous. Her retinue still exists giving behind the scenes advice and support, but it is notably less compliant....
View article Strange job: being Queen Elizabeth II, Britain’s longest reigning monarch
Article 10 mins
Stonehenge before the First World War
History & The Arts

Stonehenge before the First World War

...sang and shouted; and by and by, just outside the barbed-wire enclosure a rabbit was unearthed, and about three hundred young men with shrieks of excitement set about its capture. It was a lively scene, a general scrimmage, in which everyone was trying to capture an elusive football with ears and legs to it, which went darting and spinning about hither and thither among...
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Article 10 mins
Why are public companies vanishing in America?
Money & Business

Why are public companies vanishing in America?

...liquid assets more than doubled. The average profitability (defined as operating income before depreciation minus interest and taxes, divided by assets) of public firms has decreased over time. A substantial proportion of this decline is related to the rise of R&D. Accounting rules dictate that R&D is expensed while capital expenditures are not. Even after adjusting for...
View article Why are public companies vanishing in America?
Article 5 mins