NOOSE Gear

Test Chamber 13: Place portals as shown to redirect the laser. Use a time portal to move the laser into the future. Rearrange portals in the future to direct the laser into the target and exit the chamber.

Test Chamber 14: Travel to the present. Summon a reflector cube and position it to direct the laser through the first node. Use portals to bring the laser into the present through the time portal, ensuring it hits the nodes. Travel to the future, retrieve the reflector cube, and bring it back to the present. Position the reflector cube to hit all three nodes. Finally, travel to the future again and position the future reflector cube to direct the laser into the receiver.

Test Chamber 15: Go through the particle field to the left. Place a portal where the laser hits the wall and a time portal on the opposite wall. Travel through the time portal to the future to bypass the particle field. Return to the present on the other side. Place a portal on the upper wall to direct the laser to the first receiver. Travel to the future, place a portal in the laser room to hit the second receiver. Return to the present. Stand on the elevating platform and place a time portal behind the node to raise the platform further, allowing you to summon a reflector cube. Place this cube on the lip above the second receiver. Travel to the future, pick up the future reflector cube, and bring it back to the present via a time portal in the laser room. Position it to reflect the laser into the second receiver. To bypass the particle field, use a portal on the other side or a time portal. In the present, on the other side of the particle field, climb the stairs and use a portal on the upper wall to hit the third receiver. Move the reflector cube onto the switch to complete the chamber.