Recent comments in /f/todayilearned

willie_caine t1_jdnfv4x wrote

>I am pretty sure the article gets this wrong.

It seems pretty accurate to me

>It is not that there were several liters of water (which would drown anyone immediately).

It filled slowly, and was concentrated around the back of his head. As it was in zero G it wouldn't behave like one might instinctively assume.

>It is that without adequate absorptive material (headband, chinblock) and proper ventilation, the moisture from exhalation just sheets over all internal surface in microgravity.

The visors even have anti-fogging surface coating (earlier suspected of being the reason the water tasted weird) - they're pretty impressive. The amount of moisture exhaled wouldn't account for the water present in the incident.

He definitely was in danger of drowning due to the litres of water sloshing about in his helmet. Luckily he kept calm (being a test pilot astronaut will probably help with that), as he couldn't even talk towards the end, and had to rely on hand squeezing to communicate. That's about as close to game over as you can get!

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Ahelex t1_jdndxj2 wrote

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marmorset t1_jdnbxws wrote

Here's how it works:

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Shoe size in the United Kingdom, Ireland, India, Pakistan and South Africa is based on the length of the last [a last is a foot-shaped template] used to make the shoes, measured in barleycorns (1⁄3 inch) starting from the smallest size deemed practical, which is called size zero. It is not formally standardised.

Note that the last is typically longer than the foot heel to toe length by 1⁄2 to 2⁄3 in or 1+1⁄2 to 2 barleycorns, so to determine the shoe size based on actual foot length one must add 2 barleycorns.

A child's size zero is equivalent to 4 inches (a hand = 12 barleycorns = 10.16 cm), and the sizes go up to size 13+1⁄2 (measuring 25+1⁄2 barleycorns, or 8+1⁄2 inches (21.59 cm)). Thus, the calculation for a children's shoe size in the UK is:child shoe size (barleycorns) = 3 × last length (in) − 12equivalent to:child shoe size (barleycorns) ≈ 3 × foot length (in) − 10.

An adult size one is then the next size up (26 barleycorns, or 8+2⁄3 in (22.01 cm)) and each size up continues the progression in barleycorns.[5] The calculation for an adult shoe size in the UK is thus:adult shoe size (barleycorns) = 3 × last length (in) − 25equivalent to:adult shoe size (barleycorns) ≈ 3 × foot length (in) − 23.

Although this sizing standard is nominally for both men and women, some manufacturers use different numbering for women's UK sizing.In Australia and New Zealand, the UK system is followed for men and children's footwear [Essentially the UK system, but they count the UK size zeros as the US size 1 and go from there]. Women's footwear follows the US sizings.

In Mexico, shoes are sized either according to the foot length they are intended to fit, in cm, or alternatively to another variation of the barleycorn system, with sizes calculated approximately as:adult shoe size (barleycorns) = 3 × last length (in) − 25+1⁄2equivalent to:adult shoe size (barleycorns) ≈ 3 × foot length (in) − 23+1⁄2.

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