Room C4 (2) "Entangled"

Like the last room, we have two receivers, both with timers.

You'll need to activate them both more-or-less simultaneously to open the door.

There's a right-arrow at the top, which will get a particle into the top receiver. But how to reach the lower one?

Remember what you did in the last room with the two arrows.

Combine them to split the particle.

When you split a particle like this, the two new particles are inextricably linked.

When one particle changes direction, its pair will turn the same way.

Split the particle and use the top arrow to turn the upper particle right. The lower particle will also turn right.

Make sure you've put the combined arrows in the middle of the room so that both receivers are activated at the exact same time, giving you ample opportunity to get through the door.