Sat Jul 05 00:30:00 UTC 2025: ## FOR IMMEDIATE RELEASE
**The Hindu Explains: From Mercury Columns to MEMS – How Barometers Measure Pressure**
**CHENNAI, INDIA – July 5, 2025** – *The Hindu*, a leading Indian newspaper, today published a concise explanation of how barometers work, tracing their evolution from 17th-century fluid-based designs to the sophisticated digital sensors found in modern smartphones.
The article details the principle behind traditional barometers, where air pressure pushes on a column of fluid, causing it to rise in a closed tube. It also highlights the invention of the aneroid barometer in 1844, which used a spring-supported capsule reacting to air pressure.
The piece particularly focuses on digital barometers, highlighting how micro-electro-mechanical systems (MEMS) convert pressure changes into electronic signals. These MEMS devices utilize the piezoresistive effect or the change in capacitance due to pressure-induced distance variations to generate a pressure reading. Amplified by supporting circuitry, these signals are then displayed digitally.
Published in the context of *The Hindu*’s regular features, including sections dedicated to Indian perspectives on world affairs, local Karnataka news, cinema reviews, technology updates, science communication, data analysis, health, and books, the article showcases the newspaper’s commitment to providing accessible and informative content to its readers.
*The Hindu* encourages readers to engage with the article through comments on its new commenting platform, adhering to guidelines promoting respectful and constructive discussion.
First Piper 