This image is not available for purchase in your country.

Invisible writing, 19th century

Invisible writing, 19th century

C010/8719

Rights Managed

This image is not available for purchase in your country.

Please contact your Account Manager if you have any query.

Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Invisible writing. Etching of invisible writing being carried out using sodium hypochlorite (then known as Javelle water or Javel water), an alkaline disinfectant more commonly known as bleach. The word science has been written on a substrate using nitric acid. The word is invisible until dipped in the bleach, when it turns white due to the chemical reaction that takes place. Artwork from the ninth volume (first period of 1892) of the French popular science weekly 'La Science Illustree'.

Release details

Model release not required. Property release not required.

 {{ i.shot_duration ? i.shot_duration + ' ' : '' }}{{ i.shot_uhd ? '4K ' : i.hires ? 'HD ' : '' }}{{ i.spl_number }} R{{ i.license }}

  • Add to board
  • Similar {{ mediaType(i) }}