en>BD2412: /* Computer stereo vision */minor fixes, mostly disambig links using AWB

2014-12-12T14:44:11Z

Computer stereo vision: minor fixes, mostly disambig links using AWB

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	~~[[Image:Tachymeter scale bezel close-~~up~~.jpg\|thumb\|Tachymeter scale on a [[citizen]] watch bezel]]~~		I woke up the other day and realised - I have also been single for a while now and following much bullying from buddies I today locate myself Tickets to luke bryan concert - [http://lukebryantickets.lazintechnologies.com lukebryantickets.Lazintechnologies.com] - registered for internet dating. They promised me that there are plenty of [http://minioasis.com luke bryan tickets indianapolis] ordinary, pleasant and interesting people to meet, so the pitch is gone by here!<br>I try to maintain as toned as potential staying at the fitness center several times a week. I love my athletics and make an [http://www.banburycrossonline.com luke bryan meet and greet tickets] effort to play or watch since many a possible. I shall often at Hawthorn matches being wintertime. Note: I have noticed the carnage of fumbling fits at stocktake revenue, In case that you considered purchasing an activity I don't [http://www.senatorwonderling.com tickets to see luke bryan] mind.<br>My fam and pals are amazing and [http://search.un.org/search?ie=utf8&site=un_org&output=xml_no_dtd&client=UN_Website_en&num=10&lr=lang_en&proxystylesheet=UN_Website_en&oe=utf8&q=spending+time&Submit=Go spending time] together at bar gigabytes or dinners is always critical. As I realize that one may do not have a nice dialogue using the noise I haven't ever been into cabarets. I also got two quite cute and definitely cheeky dogs who are always ready to meet new individuals.<br><br>my web-site: [http://www.hotelsedinburgh.org luke bryan concert Tour 2014]
	~~A '''tachymeter''' scale is a scale sometimes inscribed around~~ the ~~rim of an [[analog watch]]. It can be used to compute~~ a ~~speed based on travel time or measure distance based on speed. The spacings between the marks on the tachymeter dial are therefore proportional~~ to 1/~~t where t is the elapsed time, and hence the tachymeter scale is logarithmic and noticeably non linear~~.

	~~The function performed by a tachymeter is independent of the unit of distance (e~~.g. ~~[[statute mile~~]~~]s, [[nautical mile]]s, kilometres, metres etc.) as long as the same unit of length is used~~ for ~~all calculations~~. ~~It can also be used to measure an industrial production process in units per hour. A tachymeter is simply a means~~ of ~~converting ''elapsed time in seconds per unit'' to ''units per hour''.~~

	~~==Measuring speed ==~~
	~~To use a tachymeter-equipped watch for measuring speed, start the chronograph at a starting marker of a known distance.<ref>~~[http://~~horologyzone~~.com~~/watch/watch-school/tachymeter.html Tachymeter - How to Use~~]~~</ref> At the next marker~~, ~~the point on the scale adjacent~~ to the ~~second hand indicates the speed (in distance between markers per hour) of travel between the two. The typical tachymeter scale on a watch converts between the number of seconds it takes for an event~~ to ~~happen and~~ the ~~number of~~ times ~~that event will occur in one hour~~. ~~The formula used to create this type of tachymeter scale is<ref>~~[http://www.~~chrispeters~~.com~~/tachymetre~~.~~html Description of Tachymeter Dial]</ref>~~

	:~~<math>T = \frac{3600}{t}</math>~~

	~~where T is~~ the ~~tachymeter scale value; t is the time in seconds~~ that ~~it takes for the event to occur; and 3600 is the number of seconds in~~ an ~~hour.~~

	[~~[Image~~:~~Analog watch tachymeter diagram.svg\|thumb\|Showing 35 seconds elapsed, about 103 units by calculation]]~~
	~~As a sample [[calculation]], if it takes 35 seconds to travel {{convert\|1\|mi\|km\|adj=off}}, then the average speed is {{convert\|103\|mi~~/~~h\|km~~/~~h\|abbr=on}}~~. ~~On the watch, 35 seconds gives scale value 103~~.

	~~Note that the tachymeter scale only calculates the [[average]~~] ~~speed~~.
	~~As a second example, if it takes 20 seconds to travel {{convert\|1\|km\|mi\|abbr=on}}, then the average speed on the watch used for the purpose of the picture only is {{convert\|180\|km~~/~~h\|mi~~/~~h\|abbr=on}} (examine the picture of the watch which is here only to simplify the idea. Also tachymeter scale on the real watch would not be linear~~.

	~~The scale is generally only accurate for elapsed times over approximately 7 seconds~~.
	~~For events that happen either very quickly or slowly, one can adjust the sixty-second tachymeter scale commonly found on watches.~~
	~~Smaller fractional units can be used for slower objects, like runners, turtles and snails, but the same X~~/hour function remains constant. The scale on a watch is only valid for things that happen in 60 seconds or fewer, and the scale is also difficult to resolve for events that take fewer than 10 seconds or so to occur. As an example, if it takes 100 seconds to eat an apple, cutting that number in half allows one to say that it takes 50 seconds to eat half an apple. Using the tachymeter scale one can calculate that 72 half apples (36 whole apples) could be eaten in one hour. Some watches,
	~~not common, have 'wraparound' or 'scroll' scales, which extend the readings to lower speeds, typically 45 units.~~

	==~~Measuring distance~~==
	A tachymeter-equipped watch can be used to measure distance by timing the travel over the distance while the speed is held constant. The tachymeter scale is rotated to align with the second hand at the start of the length to be measured. When the second hand reaches the point on the scale where the speed indicated equals the speed of the vehicle, one unit of distance (miles if speed is miles per hour, kilometres if kilometres per hour, etc.) has been covered. For example, if you travel at a constant 80&~~nbsp;mph (or at 80~~&~~nbsp;km/h), then the distance traveled while the second hand sweeps to "80" (45 seconds) will be exactly 1 mile (or 1 kilometer at 80~~&~~nbsp;km/h).~~

	==~~Rotating scale~~==
	~~Some tachymeter scales are on a rotating, indexed bezel~~. ~~This allows two additional modes of use: The tachymeter bezel can be aligned with~~ a ~~free running second hand, and, more subtly, can be used to find the average speed over longer times/distances. Set~~ the ~~rotary bezel index opposite the position of the minute hand, note the mileage. Glance at the tachymeter scale 60 units later, and~~ '~~'average'' speed will be indicated~~. ~~A little mental math allows interim averages, easiest at 1/4 (15 unit)~~ and ~~other integer values~~.

	~~==References==~~
	~~{{reflist}}~~

	~~{{DEFAULTSORT~~:~~Tachymeter Scale}}~~
	[~~[Category~~:~~Scales]]~~
	~~[[Category:Watches]~~]

en>Ahu: /* External links */ add link to live demo

2014-01-29T22:46:49Z

External links: add link to live demo

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en>Thorwald: ref. author fmt

2012-08-07T18:45:15Z

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Needleman–Wunsch algorithm - Revision history

en>BD2412: /* Computer stereo vision */minor fixes, mostly disambig links using AWB

en>Ahu: /* External links */ add link to live demo

en>Thorwald: ref. author fmt