After all the scene is over, follow Tesla and he'll take you to his laboratory. Take this time to explore his lab and examine some of his toys. Once Tesla calls you over, head to his position and he'll have you examine one of his new devices: the TS-27 Inverter / Rectifier. Examine the object then press Triangle to operate it. Basically, you need to stop the mercuries on both tubes on the marked location by pressing the assigned analog sticks. You'll use this device on several occasions in the game.
After testing the Inverter/Rectifier, Tesla will bring you to test a Carbine with telescopic sight. Using this rifle, you can adjust the zoom and hold your breath temporarily to make your shot more accurate. After this another scene will be played.