Light according to holographer August Muth :

https://vimeo.com/125614243

“Black hole” laser transmission hologram. 50 x 60 cm. Ap-holographie. 1981.

    “Black hole”
    “Black hole”. Same hologram back-lit by a multi-wave Krypton laser.

    “… is a metaphore”. Leonard Susskind.

    https://en.wikipedia.org/wiki/Holographic_principle

    Here an interview of Leonard Susskind about holographic cosmology.


    https://www.youtube.com/watch?v=iNgIl-qIklU

    And Gerard’t Hooft :