evaporation

2 posts

You can do worse than watching paint dry - ask physics

Dec 18, 2023 3 min read

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,…

Thermal gun, sanitiser and volatility

Sep 22, 2020 1 min read

Science alcohol COVID-19 disinfectant ethanol ethyl alcohol evaporation hand sanitizer isopropyl alcohol phase change thermal guns volatile 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 contactle…