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In 2017, a group led by Michael Stevens performed the first realistic trolley-problem experiment, where subjects were placed alone in what they thought was a train-switching station, and shown footage that they thought was real (but was actually prerecorded) of a train going down a track, with five workers on the main track, and one on the ...
Train shunting puzzles, also often called railway shunting puzzles or railroad switching puzzles, are a type of puzzle. Shunting puzzles usually consist of a specific track layout, a set of initial conditions (typically the starting place of each item of rolling stock ), a defined goal (the finishing place of each rolling stock item), and rules ...
In his popular work, Relativity: The Special and General Theory, Einstein translates the formal presentation of his paper into a thought experiment using a train, a railway embankment, and lightning flashes. The essence of the thought experiment is as follows: Observer M stands on an embankment, while observer M ' rides on a rapidly traveling ...
Timesaver is a well-known [1] model railroad switching puzzle (U.K. English: shunting puzzle) created by John Allen. [2] It consists of a specific track layout, a set of initial conditions, a defined goal, and rules which must be obeyed while performing the shunting operations.
The Wiesen Test of Mechanical Aptitude (WTMA) is among the most popular mechanical reasoning tests and is considered very reliable. [1] The WTMA is a 30 minute, sixty-question test used to measure mechanical aptitude. It is used for employment testing of job applicants and to help select vocational education students. The WTMA assesses broad ...
[8] [9] [10] In particular, precision scheduled railroading is impacting safety due to increased train length, up to three miles (5,000 meters) in many cases. This leads to a higher risk of derailments as well as crew stress and fatigue due to the difficulty of operating trains of this length, for which the North American railroad network was ...
Mental calculation often involves the use of specific techniques devised for specific types of problems. People with unusually high ability to perform mental calculations are called mental calculators or lightning calculators. Many of these techniques take advantage of or rely on the decimal numeral system.
Ceres gravity train concept. Mining the asteroid belt could use gravity trains to haul raw material to a central refining point and launch point / space elevator. A gravity train is a theoretical means of transportation for purposes of commuting between two points on the surface of a sphere, by following a straight tunnel connecting the two points through the interior of the sphere.