Vent Room - Day 31

Midtown tunnel old east vent fan room.

High Wire

These high-voltage transmission line are cast against a clear blue sky. Canon 5D Mark II, 1/8000 sec @ f/4.0, ISO 400, 1800mm focal length.

Rotating Force

- The "brushes" of a large elevator motor make contact against the "commutator" which rotates on the shaft. The commutator is essentially a switch which reverses the electrical current direction of the motor's armature creating a steady rotating force. This motor was very large, about waist high from the floor. Canon G1X, 1/13 sec @ f/2.8, ISO 1600.

Valve

From 2010 Blog

- Fire system values. Almost every commercial building has them. They are usually tucked away in corner and most people never notice them. This is just one small valve of several that feed the sprinkler system at work. Canon G11, 1/25 sec @ f/3.5, ISO 200.