Tag Archives: evaporation
You can do worse than watching paint dry – ask physics
I live in Chennai, a city whose multifaceted identity includes its unrelenting humidity. Its summers are seldom hotter than those in Delhi but they are more unbearable because it leaves people sweaty, dehydrated, and irritated. Delhi’s heat doesn’t have the … Continue reading
Posted in Scicomm
Tagged active process, advection, compressive stress, evaporation, Jean-Baptiste Salmon, Physical Review Letters, polymer gelation, relative humidity, skin, sweating
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Thermal gun, sanitiser and volatility
Most of the shops I visit to purchase my supplies dispense an alcohol-based hand-sanitiser at the point of entry and have a person stationed there to check customers’ body temperature with a contactless thermal gun. They used to point the … Continue reading
Posted in Science
Tagged alcohol, COVID-19, disinfectant, ethanol, ethyl alcohol, evaporation, hand sanitizer, isopropyl alcohol, phase change, thermal guns, volatile, volatility
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