Search results
Results from the WOW.Com Content Network
Quarter-comma meantone, or 1 4 -comma meantone, was the most common meantone temperament in the sixteenth and seventeenth centuries, and was sometimes used later. In this system the perfect fifth is flattened by one quarter of a syntonic comma ( 81 : 80 ), with respect to its just intonation used in Pythagorean tuning (frequency ratio 3 ...
The Curta was conceived by Curt Herzstark in the 1930s in Vienna, Austria.By 1938, he had filed a key patent, covering his complemented stepped drum. [3] [4] This single drum replaced the multiple drums, typically around 10 or so, of contemporary calculators, and it enabled not only addition, but subtraction through nines complement math, essentially subtracting by adding.
1:48 1⁄4" scale used for Queensland sugar cane railways[17] and US subjects[18] of 3 ft 6 in. (1,067 mm) ^ O21 – [1] 3 ft (914 mm) ^ O16.5 – UK 7 mm scale with 00 16.5 mm gauge, used to model gauges between 2 ft (610 mm) and 2 ft 6 in (762 mm). ^ O14 – Finescale modelling of British 2ft gauge using 7 mm O scale and a unique 14 mm gauge.
Model railway scales and gauges are standardized in NEM 010, [1] which covers several gauges for each scale. Narrow gauges are indicated by an additional letter added after the base scale as follows: no letter = standard gauge (1,250–1,700 mm or 49.2–66.9 in) m = metre gauge (850–1,250 mm or 33.5–49.2 in) e = narrow gauge (650–850 mm ...
(10) Pearl (5 pt, ≈1.764 mm) and (11) Diamond (4.5 pt, 1.5875 mm). Fonts originally consisted of a set of moveable type letterpunches purchased from a type foundry. As early as 1600, the sizes of these types—their "bodies" [1] —acquired traditional names in English, French, German, and Dutch, usually from their principal early uses. [2]
The rather uncommon [citation needed] 40 mm figure scale wargames figures fit approximately into this scale. 1:45: 6.773 mm This is the scale which MOROP has defined for O scale, because it is half the size of the 1:22.5 Scale G-gauge model railways made by German manufacturers. [citation needed] 1:43.5: 7.02 mm: Model railways (0)
A base-10 log scale is used for the Y-axis of the bottom left graph, and the Y-axis ranges from 0.1 to 1000. The top right graph uses a log-10 scale for just the X-axis, and the bottom right graph uses a log-10 scale for both the X axis and the Y-axis. Presentation of data on a logarithmic scale can be helpful when the data:
The dominant scale used in the United States for models of "standard gauge" trains running on 45 mm (1.772 in) track, even though 1:32 is more prototypically correct. 1:29 represents standard gauge using 2 in (50.8 mm) gauge track, the original gauge 2. This fell into disuse as gauge 1 at 1.75 inch was very close.