Robuta

https://scholars.hkmu.edu.hk/en/publications/reconstruction-of-the-infection-curve-for-sars-epidemic-in-beijin/ Reconstruction of the infection curve for SARS epidemic in Beijing, China using a back-projection... of the sars epidemic in beijing back projection reconstruction https://www.soundrent.be/product/stumpfl-508m-x-294m-front-back-projection-169-2/ Stumpfl 3,45m x 2,03m front & back projection 16:9 - Soundrent front back projection