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The 1993 Big Bayou Canot train wreck of September 22, 1993 was the worst train wreck in the history of the United States passenger railroad company Amtrak.Investigation of this accident produced recommendations by the National Transportation Safety Board, the United States National Academy of Sciences, and the American Waterway Operators that the U.S. Army Corps of Engineers support production ...
The Northrop proposal was code named "Senior Ice", and the Lockheed proposal code named "Senior Peg". [19] Northrop had prior experience developing the YB-35 and YB-49 flying wing aircraft. [20] The Northrop design was larger while the Lockheed design included a small tail. [18]
Through Eisensandstein (a jurassic 'iron sandstone', e.g. from Donzdorf in Germany) [51] and Bath stone in the UK, iron compounds are responsible for the yellowish color of many historical buildings and sculptures. [52] The proverbial red color of the surface of Mars is derived from an iron oxide-rich regolith. [53]
For example, to print a white character with a black background, a color attribute of 0F hex would be used. The high four bits are set to 0000 bin, representing the background color, black. The low 4 bits, 1111 bin, represent the foreground color, white. The highest bit of the color attribute, which is also the highest bit of the background ...
IP65 touchscreen display IP65 LED lamp. The IP code or ingress protection code indicates how well a device is protected against water and dust. It is defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 [1] which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical enclosures against ...
The electronic properties of graphene are significantly influenced by the supporting substrate. [59] [60] The Si(100)/H surface does not perturb graphene's electronic properties, whereas the interaction between it and the clean Si(100) surface changes its electronic states significantly. This effect results from the covalent bonding between C ...
Resin code for polyethylene terephthalate Polypropylene lid of a Tic Tac box, with a living hinge and the resin identification code, 5, under its flap. The ASTM International Resin Identification Coding System, often abbreviated RIC, is a set of symbols appearing on plastic products that identify the plastic resin out of which the product is made. [1]
The earliest examples of color codes in use are for long-distance communication by use of flags, as in semaphore communication. [1] The United Kingdom adopted a color code scheme for such communication wherein red signified danger and white signified safety, with other colors having similar assignments of meaning.