Already have an ACS ID? Log in
Renew your membership, and continue to enjoy these benefits.
Already an ACS Member? Log in here
Choose the membership that is right for you. Discount will be applied automatically at checkout.
Enjoy these benefits no matter which membership you pick.
Most Popular in Synthesis
Andres Tretiakov, a laboratory technician at a high school in London, had read that iodine vapor fluoresces when excited by a helium-neon laser. So he decided to give it a go. After heating a few solid iodine crystals so they’d sublime—turn from solid to gas—he shined his green laser pointer through the flask. “To my surprise, I saw that it had worked,” Tretiakov says. The iodine vapor glowed orangey yellow when excited by the laser light, which had a wavelength of 532 nm.
Submitted by Andres Tretiakov
Do science. Take pictures. Win money. Enter our photo contest here.
Related C&EN content:
For more Chemistry in Pictures, visit our new home on cen.acs.org.
This article has been sent to the following recipient: