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Plasma nitriding/carburising
Science, Maths & Technology

Plasma nitriding/carburising

...source is hydrocarbon gas (methane or propane), often diluted with nitrogen, hydrogen and argon, which is bled into the vacuum chamber at a few litres per minute. Very little exhaust gas results, hence no risk of pollution. Surface of component is cleaned by “sputtering” and hydrogen reduction of any oxides. “Sooting” – which occurs in low pressure gas...
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Article 10 mins
What is The Social Contract?
History & The Arts

What is The Social Contract?

...source, this explanation amounts to an account of natural obligations. There is another way of placing oneself under an obligation. Suppose I ask to borrow some money from a colleague. She agrees, if I pay her back, and so I say ‘I’ll pay you back that tenner next week.’ Then – clever philosophical tricks aside – I am under an obligation to pay back the money...
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Article 5 mins
How is a University obsession with teenagers hurting part-time students?
Education & Development

How is a University obsession with teenagers hurting part-time students?

...sources of financial support. All this varied by disciplines, with some courses appearing to offer very different part-time student experiences. Not all students are the same Part-time higher education has a crucial role to play in social mobility. Opportunities to study part-time are at the forefront of widening access to the most disadvantaged adults, those vulnerable...
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Article 5 mins
Do animals really raise human babies as their own?
Nature & Environment

Do animals really raise human babies as their own?

...source was the result of some form of mutual understanding between them; the baby reached out to her, and she responded to its request for comfort. A final case which brings us back to human children and canines was documented in 2015. A malnourished and neglected two-year-old child was found by authorities in Chile being breastfed by a neighbour’s dog. Stories of feral...
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Video 5 mins
How Do Batteries Work?
Science, Maths & Technology

How Do Batteries Work?

...source of electricity in the early 19th century. MAKE YOUR OWN PILE You can create your own voltaic pile using 2p and 10p coins and some paper towel the same size as the coins and soaked in lemon juice (or water that has had as much table salt dissolved in it as possible - what's called a 'saturated' solution). The paper discs need to be the same size as the 10p coins so...
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Article 10 mins
The vulnerability of refugees and asylum seekers to modern slavery
Society, Politics & Law

The vulnerability of refugees and asylum seekers to modern slavery

...Source: UNHCR Refugee Data Finder There are multiple reasons ‘why’ and ‘how’ refugees and asylum seekers become vulnerable to exploitation and modern slavery, including: Even if they find themselves in ‘safe’ countries, refugees and asylum seekers often lack legal status and access to formal employment. This legal limbo forces many into informal labour markets...
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Article 5 mins
Perseus: what’s in a name?
History & The Arts

Perseus: what’s in a name?

...sources, but with some interesting twists and additions: the sea-monster has become the terrifying Kraken, which in fact comes from Norse mythology, while the 2010 film also introduces characters such as the Djinn, from the Arabic tradition. Other recent versions of Perseus have taken a similar ‘pick and mix’ approach to his myths. Percy Jackson, the hero of Rick...
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Article 10 mins
How yoga conquered Britain: the feminist legacy of Yogini Sunita and Kailash Puri
Health, Sports & Psychology

How yoga conquered Britain: the feminist legacy of Yogini Sunita and Kailash Puri

...sources, she was a charismatic teacher who taught a flowing sequences of postures, many with at least one knee bent, resting a foot in the groin. Sunita’s signature technique was the “slipped second” during which one calls to mind anxieties, before releasing them completely for “just one second”. Explaining to listeners of BBC Radio 4 Woman’s Hour in 1961,...
View article How yoga conquered Britain: the feminist legacy of Yogini Sunita and Kailash Puri
Article 10 mins