# Earthquake Alarm

**URL:** <https://scienceactivitycentreiiserpune.discourse.group/t/earthquake-alarm/68>\
**Category:** NSD2026\
**Created:** [February 16, 2026, 3:22pm UTC](https://scienceactivitycentreiiserpune.discourse.group/t/earthquake-alarm/68 "2026-02-16T15:22:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![binny](https://avatars.discourse-cdn.com/v4/letter/b/0ea827/32.png) [@binny](https://scienceactivitycentreiiserpune.discourse.group/u/binny)\
**Post date:** [February 16, 2026, 3:22pm UTC](https://scienceactivitycentreiiserpune.discourse.group/t/earthquake-alarm/68/1 "2026-02-16T15:22:23Z")

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**Name** – Shreya Mahendra Yadav

**School** – Jai Hind High School

**Project Title** – Earthquake Alarm System

​ **Description** - The Earthquake Alarm, is a prototype for a localized Early Warning System designed to bridge the gap between a seismic event and human reaction time.

 ![Earthquake Alarm System](https://canada1.discourse-cdn.com/flex029/uploads/scienceactivitycentreiiserpune/original/1X/dd0466bef66551d1d4882ef511c3824818fad2a0.jpeg)

The science behind this device relies on the detection of P-waves (Primary waves), which are the first longitudinal waves to reach the surface during an earthquake. While these waves are fast and often unfelt by humans, they precede the slower, highly destructive S-waves (Secondary waves). Using a sensor based on the Law of Inertia, my device remains momentarily stationary while the ground and the alarm’s frame move, completing an electrical circuit that triggers an instant audible and visual alert.

This creates a ‘Golden Window’ of several seconds, allowing people to ‘Drop, Cover, and Hold On’ before the heavy shaking begins. Beyond a simple buzzer, this research demonstrates how low-cost sensors can be integrated into smart infrastructure to automatically shut off gas lines or open emergency exits. By focusing on precision calibration to filter out everyday vibrations, this project proves that we can use basic physics and accessible electronics to provide a life-saving advantage in disaster-prone regions. Thank you.

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**Author:** ![saciiserpune](https://yyz1.discourse-cdn.com/flex029/user_avatar/scienceactivitycentreiiserpune.discourse.group/saciiserpune/32/16_2.png) [@saciiserpune](https://scienceactivitycentreiiserpune.discourse.group/u/saciiserpune)\
**Post date:** [February 16, 2026, 4:26pm UTC](https://scienceactivitycentreiiserpune.discourse.group/t/earthquake-alarm/68/2 "2026-02-16T16:26:06Z")

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Please add few images for your project.

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**Author:** ![Dhruv\_Patole](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@Dhruv\_Patole](https://scienceactivitycentreiiserpune.discourse.group/u/Dhruv_Patole)\
**Post date:** [February 28, 2026, 2:04pm UTC](https://scienceactivitycentreiiserpune.discourse.group/t/earthquake-alarm/68/3 "2026-02-28T14:04:28Z")

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Nice idea. Share an image also