Final answer:
Phoenix's Curveball (Q) flash in Valorant lasts approximately 1.1 seconds, blinding opponents who look at it.
Step-by-step explanation:
In the tactical shooter game Valorant, Phoenix's Curveball (Q) is an ability that releases a flare orb that moves in a curve and blinds players who look at it. The flash duration, or how long the flash effect lasts, is approximately 1.1 seconds. It's important to note that this duration is subject to balancing changes by the game developers, so it may vary as the game is updated. To effectively use the Curveball, players should aim to curve it around corners to blind opponents without affecting teammates.