View allAll Photos Tagged Signals
This photograph was taken by Brenda Sullivan for the Black gold, rivers of steel exhibition held in Cultural Collections during October-November 2010.
Postland Signal Box in November 2005. A remarkable survivor although it has seen better days. This is on the former line between March and Spalding that closed in November 1982. There are other boxes on this line that survive at Murrow, French Drove and Cowbit. Plans have been mentioned to reopen this line, but the opening of the A16 over a section of the old line make this look unlikely.
The Eagle Signal Company of Australia used the Durasig design under license from it's US equivalent.
The intersection of 24th Street and Idylwyld Drive North in Saskatoon is a strange one. There are traffic signals in all four directions, but one of them enters a strip mall. The ones facing west in front of the strip mall were recently replaced with an entirely new post. What's odd is that it's not clear what happened to the original post. However, you can see that the new post has been installed in a location further away from the street.
At some time in the distant past this single copper wire served some important purpose. It carried signal data from one block to the next to safely guide trains from disaster.
It's rare to still find old insulators and the original copper wires in the wild, but here in Otisville NY along a section of the old Erie mainline, original signal poles, wires, and insulators are still intact along the abandoned mainline.
Some of the local wildlife has been doing a good job of keeping the American Signal Crayfish population under control !
OPPENHEIM, Alan V.; WILLSKY, Alan S.; NAWAB, Syed Hamid. Signals & systems. 2 ed. Nova Jersey: Prentice Hall, c1997. xxx, 957 p. (Prentice-Hall signal processing series). Inclui bibliografia e índice; il. tab. quad.; 25cm. ISBN 0138147574.
Notas de conteúdo:
1. Signals and Systems
2. Linear Time-Invariant Systems
3. Fourier Series Representation of Periodic Signals
4. The Continuous-Time Fourier Transform
6. Time and Frequency Characterization of Signals and Systems
7. Sampling
8. Communication Systems
9. The Laplace Transform
10. The z-Transform
11. Linear Feedback Systems
App. Partial-Fraction Expansion
Palavras-chave:
ANALISE DE SISTEMAS; TEORIA DOS SINAIS/Telecomunicação; PROCESSAMENTO DE SINAIS.
CDU 621.391 / O62s / 2 ed. / 1997
Pacifastacus leniusculus.
An invasive species in the UK, the fungal "crayfish plague" that they carry has wiped out the native "white-clawed crayfish" in most regions of the UK.
They can be identified by their large size when fully grown, their claws are larger in comparison to body size with turquoise/white markings at the hinge and bright orange/red colour under the claws.
Flashing light tower in Chu Lai for ships to get clearance and other information before entering the port.
I got bored and made a photoshoped picture of a huge wave taking out Signal Hill in St. John's, Newfoundland, which is where i live.
2012 inspired I guess. I've been hearing alot about it lately and thought it would be fun to make a picture related to it.
Fired Up!
Big thanks to Jim Wrinn of TRAINS magazine, Chase Gunnoe, the staffs of the North Carolina Transportation Museum and the Virginia Museum of Transportation...and especially the crew of Norfolk & Western #611...for the great day out for the Fired Up! Photo Charter at NCTM in Spencer, NC.
Repeater signals at North Weald in case of fog. I'm guessing it displays green when the home signal displays clear, and yellow when the home displays stop (danger).
Project: Signals Poster
Art Director: Daniele Venturini
Agency: Key Business. Com
Client: Label Under Construction
When it comes to traffic signals that hang from wires, Saskatoon only has three intersections remaining where the signals are like that (Avenue D & 33rd Street, 3rd Avenue North & 23rd Street East, 19th Street West & 3rd Avenue South). This one is located at Avenue D North and 33rd Street East and is very different from most intersections in Saskatoon. However, at the other two intersections, the traffic signals will be upgraded, soon enough. But as for this intersection, I think the City of Saskatoon is intent on keeping the layout the way it is.
I didn't plan on taking a picture of the Safeway store in the background there, but it's there... and it is significant because it is an old store that has been renovated.