![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/05/notebook_saywhat_4.jpg?fit=860%2C460&ssl=1)
ON THE MOVE An exciton, illustrated here, transfers energy to an electron.
Stef Simmons, UCL Mathematical and Physical Sciences/Flickr (CC-BY 2.0)
ON THE MOVE An exciton, illustrated here, transfers energy to an electron.
Stef Simmons, UCL Mathematical and Physical Sciences/Flickr (CC-BY 2.0)