Metropolitan Digital

Google


.

Why do smoke alarms keep going off even when there's no smoke?

  • Written by MVS Chandrashekhar, Assistant professor of electrical engineering, University of South Carolina
Why do smoke alarms keep going off even when there's no smoke?Sensors in smoke detectors monitor how particles in the air affect a flow of current to the batteryGarrett Aitken/iStock via Getty Images

Editor’s note: MVS Chandrashekhar is a professor of electrical engineering at the University of South Carolina. In this interview, he explains how smoke detectors work and why they sometimes sound an alarm...

Read more: Why do smoke alarms keep going off even when there's no smoke?

More Articles ...

  1. The insurrection at the Capitol challenged how US media frames unrest and shapes public opinion
  2. How does the 25th Amendment work, and can it be used to remove Trump from office after US Capitol attack?
  3. Connected workouts can help you get fit alongside virtual buddies during the pandemic
  4. US Capitol protesters, egged on by Trump, are part of a long history of white supremacists hearing politicians' words as encouragement
  5. Pikas are adapting to climate change remarkably well, contrary to many predictions
  6. Was it a coup? No, but siege on US Capitol was the election violence of a fragile democracy
  7. 'Once you engage in political violence, it becomes easier to do it again' – an expert on political violence reflects on events at the Capitol
  8. Yellow Gadsden flag, prominent in Capitol takeover, carries a long and shifting history
  9. COVID-19 crisis in Los Angeles: Why activating 'crisis standards of care' is crucial for overwhelmed hospitals
  10. Legalizing marijuana, once a pipe dream on Capitol Hill, takes an important step forward