After the room with the two eyes on opposite sides and the disappearing bridge between them, and after the room with elevator that you have to jump on in the middle there is a tunnell with yellow light and a green door thats triggered by a laser, leading into a seemingly empty square white room, but it closes before I get through, how do you get past it? I see no other features, hints?
You need to use the doors momentum to your advantage, as it's somewhat of a physics puzzle with a bit of reflex testing.
If you go too early, the door will not open completely. If you go too late, the door will bounce after reaching it's highest point, and will come down too quickly.
That said, there's little incentive to go through that door. The room is completely empty... hopefully it'll be filled with something awesome in an update. ;)
it closes before I get through
There is no real trick: you have to improve your timing and reflexes.
As you can see in another question, I could get past this door.