4 ms·
Karachi, and Sindh at large often goes through periods of +35 wet bulb. People can jump into fountains, or other bodies of water, hide at home, airconned build
by baybal2 5y ago
Karachi, and Sindh at large often goes through periods of +35 wet bulb.
People can jump into fountains, or other bodies of water, hide at home, airconned buildings.
In the end, people can try to brave it, and wait for the relatively cool evening.
- numpad0 5y agoWet bulb thermometer is the kind that a pair of thermometers are mounted together with one wrapped in wet cotton and the other dry. Typically between the two glass tubes is a little look up table that gives humidity from current dry bulb temperature and delta between the two. I don't know what exactly environment reaching 35C/95F web bulb means, but considering 1) it indicates temperature of a thermometer cooled by evaporation, and 2) body temperature of a human is ~40C/100F, I think it means evaporative cooling aka sweating is becoming useless. It won't be a huge stretch to consider that unsurvivable.
- baybal2 5y agoYet people did. The heat stroke at 35C° wet bulb if far from instantaneous.
- deleted 5y ago[deleted]
- giantg2 5y ago"I think it means evaporative cooling aka sweating is becoming useless. It won't be a huge stretch to consider that unsurvivable." This assumes there are no alternatives to evaporative cooling via sweat.
- numpad0 5y agoIndeed. Strapping on a pair of active CPU heatsink through a B6 sized aluminum cold plate to the back of waist helps immensely in that kind of climate. But it needs constant 12V/0.5-1A DC supply.
- nonameiguess 5y agoWet bulb 35C is equivalent to a heat index of 160F. One issue that people who haven't experienced extreme heat might not realize is a lot of people just pass out really quickly. While it takes a while to go past the point of no return and they theoretically could be egressed to somewhere they can cool off and recover, if they're alone, they're not going to.
- brmgb 5y agoI understand you are probably American and therefore not used to Celsius but just so you know the body of a human is around 37.7 °C. 40 °C is already life-threatening.