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CSX W-003 Track Geometry Train with former MARC GP40WH-2 #9969, waits to meet a freight led by CSX5296 on the River Line on Nov 14, 2018.
Consist: Track Geometry Car TGC3 with CSXT 594355 "Hocking Valley"
(18H.8317_CSX9969_Test_W003wt)
Torre del gran San Pietro (3692m) seen from the "Malvassora" climb route on Becco Meridionale della Tribolazione
Signal 616 at Stockholm Östra station is known in Swedish as a huvuddvärgsignal – in English, a main dwarf signal. This means that the dwarf signal is capable of displaying both switching and main signal indications. This type of signal has obvious similarities to the Pennsylvania Railroad position light design, but has two additional green lamps below the position light head, as well as an offset light that can display a red indication.
Signal 616 governs moves from Stockholm Östra's track 3, and is displaying a signal for the 16:41 departure for Näsbypark. The indication in Swedish is "Kör 40, varsamt" and the aspect is "blinkande grönt till vänster". In English, the indication is: "Proceed at 40 km/h, carefully", and the aspect is "flashing green to the left".
The speed restriction of 40 km/h (about 25 mph) is dictated by the track geometry of the station throat. The need for caution is dictated by the fact that the train's route from the station to the open line is not completely set, and there is a stop signal a short distance down the line.
The next huvuddvärgsignal at the end of the platform – signal 636 – is displaying the same indication, but I snapped the shutter while the green lamp was in the "off" state of its flashing cycle; the green lamp thus isn't visible. Once the route leaving the station is fully established, the green lamps on signals 616 and 636 will switch to a steady indication. In Swedish, this is "Kör 40” ("grönt till vänster”). In English, the indication is "Proceed at 40 km/h" and the aspect is "green to the left".
If conditions permit, the lokförare (driver) will encounter a "Kör" ("Proceed") indication on the station exit signal, at which point he or she can accelerate to the maxiumum authorized speed.
For a tiny station, Stockholm Östra is a busy place; there are six arrivals and six departures every hour, even on weekends like the Sunday, July 29, 2018 when I captured these images.
The railroad seen here is a suburban narrow gauge line, using rails that are three Swedish feet apart – 891 mm (2 ft 11 3⁄32). The line is known as the Roslagsbanan, named for the region it serves north and east of the Swedish capital of Stockholm.
Week 22: Numbers - Geometry
The Fibonacci Sequence seen in a Coneflower. The composition and the aspect ratio of the photo are all based on the Fibonacci Sequence.
#photochallenge2015
Halves huh? If it wasn't buy it by the pound I might have been tempted to argue and get two for one.
Silver Geometry Project print #24
Printed on unsalted paper. The yellows are potassium dichromate, and the blue-greens are cyanotype chemistry.
Shot for Active Assignment Weekly, theme "Back to School: Geometry".
WIT
The last rays of sunlight shining on this tree, already showing the first sprouts.
The perpetual fire at the War Memorial in Melbourne seems surrounded by linear and circular geometry with the light and shadow play in the late afternoon.
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Green Reed Grass, common around here, bent by the seasons and the cooler weather. Noticed the geometry displayed and thought to take some photos.