Stay Curious

SIGN UP FOR OUR WEEKLY NEWSLETTER AND UNLOCK ONE MORE ARTICLE FOR FREE.

Sign Up

VIEW OUR Privacy Policy


Discover Magazine Logo

WANT MORE? KEEP READING FOR AS LOW AS $1.99!

Subscribe

ALREADY A SUBSCRIBER?

FIND MY SUBSCRIPTION
Advertisement

Humans and All Living Things May Emit a Glow in Life, but Not Death

These tiny, weak signals of light may be useful to monitor the health of plants and animals.

ByPaul Smaglik
(Image Credit: Emiliano Pane/Shutterstock) Emiliano Pane/Shutterstock

Newsletter

Sign up for our email newsletter for the latest science news

Sign Up

A team of researchers have conducted a series of experiments showing that living things emit a very weak, but detectable packets of light. The signal is at the photonic level, according to a study published in The Journal of Physical Chemistry Letters.

The fact that experiments could measure this tiny amount of electromagnetic energy in both mice and plants — “in all living systems that have been examined,” according to the paper — remains notable. In order to do so, the researchers created a super-sensitive imaging system and camera to detect the small, weak light signals.

Photons are the smallest possible particle of light. The intensity of the photons the living things cast off was on the lower end; therefore they are called ultraweak photon emissions (UPEs).

The researchers wanted to see how the energy levels changed between living and dead subjects. They used it on both living and dead ...

  • Paul Smaglik

    Before joining Discover Magazine, Paul Smaglik spent over 20 years as a science journalist, specializing in U.S. life science policy and global scientific career issues. He began his career in newspapers, but switched to scientific magazines. His work has appeared in publications including Science News, Science, Nature, and Scientific American.

Stay Curious

JoinOur List

Sign up for our weekly science updates

View our Privacy Policy

SubscribeTo The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Subscribe
Advertisement

0 Free Articles