When you walk into the big light beam, you will lose control of the player character. They will stumble around and the screen will go black. 12 hours will pass when in the light before the player regains control. In hardcore mode, the 12 hours passing will affect dehydration, sleep, and hunger. Since there are two holograms and a computer entry stating hologram technology, this may prove that the Valence radii-accentuator and its stronger counterpart is based on hologram technology.
Vera Keyes' photo can be found on a table at the lowest level of the Z-38 lightwave dynamics research facility. It was a reference for her hologram that was developed on site for the Sierra Madre Casino.
If playing on core difficulties, stepping into the light beam repeatedly can make waiting long periods of time (days or weeks) easy.