Experimental Evidence of Negative Time in Traveling Photons (2025 Updates)
0:00 Negative time photons
1:40 Group delay concept explained
2:50 What may be happening here
3:50 New approach – atomic excitation time
6:02 New study – negative time real after all
7:10 Explanation – multiple photon paths
8:55 Confirmations and what this means
10:20 Conclusions
Credit to : Anton Petrov