Stopped along the Columbia River Gorge to take some pictures, an oversize load happened by. This is one of three blades that make up a wind turbine [Wikipedia] generator.
A little further down the road, there it was, the same blade, pulled off the road in some sort of a staging area. This one blade is about 45 meters (almost 150 feet) long from end to end. This is comparable to the wingspan of a Boeing 767 [Boeing]. It looks like the only way to have positioned this transport as seen here is to have backed it into place. Anyone who's ever backed a trailer has some appreciation of what that implies.
Perhaps a better impression of the size of this thing is shown on the truck driver's own web site. In his picture, what appears to be a tower segment is behind the blade and extends a bit beyond it, making it difficult to see where the blade ends, but a close look shows it clearly.
Also in the staging area were segments of the tower on which the turbine stands. Here are two side by side in their shipping rigs. Three of these make up a single tower.
Another view showing the the tower segment and its shipping mount.
Interior of a tower segment showing the ladder used to climb up the interior to service the equipment. At the top of the tower on an appropriately huge rotation mount, sits the nacelle (not shown) that houses the huge generator to which the three blades are bolted.
Fully assembled, these things tower over the hilltops all around the gorge.
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Frequently people land on this site with search queries like "what part of the eye corresponds to the camera shutter". With a camera, the shutter opens for a very precise amount of time and allows light to hit the film or sensor inside the camera. The closest comparison to that in the eye would be the eyelid that can open and close but its purpose is more analogous to that of the lens cap than the shutter. Shutter mechanisms come in a variety of configurations. More detailed information about camera shutters can be found in this article [Wikipedia].
Camera lenses also have a diaphragm iris [Wikipedia] which adjusts to increase or decrease the amount of the available light that can pass through it during any given period of time. This corresponds directly to the iris in the eye [Wikipedia] which serves the same purpose. I suspect many people confuse this with the diaphragm-type shutter mechanism, however both the eye's iris and that of the camera are visible through the lens while the shutter is generally inside the camera and out of sight. In modern cameras, the iris is usually fully open except at the moment when a picture is taken so it can be seen to move right about the same time as the shutter.