What is this?

Guess…

     2D flake of a lead iodide single crystal Restauration of a millimeter-sized crack in a canvas using a nanoparticle tincture Silicon wafer fragment for doting element transmission analysis

    Closing date: 15 January 2023

    and win!

    EXIT® – The game: The secret laboratory
    Use your science skills and find the tricky way out of the secret lab!

    NOTE: Your e-mail address will only be used to run this competition and will be deleted after the winner has been determined. The winner will be drawn from all participants providing the correct answer. Please participate only once per quiz question.