The image of the brush of ハイディンガー for the light polarized perpendicularly. Size and the deepness are emphasized.
The brush (Haidinger's brush) of ハイディンガー inner; it is said with a fascicular design to appear in the center of the field of vision of the Homo sapiens subtly when saw the visible light that see it, and is polarized in one of the phenomena.
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Summary
The light that is a side wave vibrates in the direction with an electric field, the magnetic field. The general light such as the light of the sun is the thing that this vibration direction mingled variously, but a blue sky and borrowed light are the polarized light that vibration was inclined to to a particular direction. As for the eyes of some migratory birds and insects, there is power to take in a vibration direction of this polarized light, and the sun does it with the clue which knows the direction by the polarization of the blue sky even if invisible directly. In addition, there is known to be power to sense polarization to the eyes of an octopus and the cuttlefish. It is apt to be thought that Homo sapiens does not have power to usually take in such a polarization, but, in fact, the eyes of the Homo sapiens understand polarization of the light.
The center of the field of vision can take in a light design to be called a brush of ハイディンガー when I observe polarized light well. This is a yellow narrow bunch to the bow tie-shaped boundary small design that became dim, and it is hard to be even more outstanding, but it is likely that it is yellow, and there is a bluish design at right angles. But it is thought that there is individual difference how clearly you can see a brush and is to the person whom the person who says that invisible at all says to that I am seen clearly too much and interfere. The typical size of this brush is approximately 2-3 degrees of the angle.
When I checked a mineral by the cause of the light that Austrian geologistWilhelm phone ハイディンガー (en:Wilhelm Karl Ritter von Haidinger) polarize, this phenomenon was discovered and was reported academically in 1846. It depends on the border becoming dim, and seeing it that this design is called a brush. In German, I say ハイディンガー = ビュッシェル (Haidinger-Büschel), and ビュッシェル is a meaning of "the bunches".
Method to see a brush
Many people cannot readily look at the brush of ハイディンガー at the beginning. This phenomenon is much in comparison with the outside image which we usually look at with eyes lighter and I appear and am easy to disappear. The brush always appears in the center of the field of vision, but becomes easy to see it some because our eyes are hard to perceive the thing which does not move for a field of vision by changing a vibration direction of the polarization, and turning a design. You should merely lean a head to one side in this slowly.
The simplest method to identify a brush of this ハイディンガー is to use LCD monitors such as computers. The light of LCD monitor changing brightness using polarization direction is polarized in the specific direction. The existence is plain when I incline the head to right and left slowly while turning eyes to the white domain where nothing of the screen of the computer is written, and warning the center of the field of vision. When I look at the monitor from distance of 50cm, the size of the brush becomes around 2cm on a monitor. Because the light of the monitor of the cathode-ray tube is still less polarized, I cannot use it for this purpose.
When there is the light polarizer such as polarization sunglasses, I become clear more when I watch the walls which there is not where it is likely that I was lighted up over a light polarizer equally closely. In addition, the light causing the Rayleigh scattering such as the blue sky is polarized. You should look at the domain polarized most per angle of 90 degrees from the sun to see the polarization of the blue sky.
The cause that this phenomenon happens
The size of the brush of this ハイディンガー is equivalent to size of macula (en:macula) which slightly becomes dented in the center of the retina. This phenomenon is done with a thing by polarization dichromic vision (en:dichroism) of the molecules of the pigment forming a line into a circle in this macula form and it is toric that a brush is very light and depends on the molecules which lined up being small portions. Polarization dichroism is a property varying in the absorption factor to a material by the different light of the direction of the vibration.
In addition, probably it is related to this phenomenon that the outer stratum of the cone cell (cone cell) of the retina causes birefringence. The cornea slightly causes birefringence, too, but a further study is necessary to clarify the connection in this phenomenon.
Applied to medical care
Because it is limited to the field of vision equivalent to macula, I can use that a brush of ハイディンガー appears for confirmation and training of the perception with the macula using a brush of ハイディンガー. There is custom づいている case not to watch an object closely with central fovea (ちゅうしんか, en:fovea) in the macular center, and to see it for certain squint in the domain of the remote retina from the center. This is called a prejudiced mind fixation (eccentric fixation). A device called Macular Integrity Tester-Trainer (MITT) which used a brush of ハイディンガー may be used to save that I train you to correct this prejudiced mind fixation, and to look at the thing with central fovea. I use a turning polarizing plate using the bright sunshine in this device from the rear. I attach blue glasses to be easy to look at the brush of ハイディンガー, and to do it, and the user can perceive a brush of ハイディンガー in the part equal to the macula if things go well by shading the light, and one eye is trained to put an object on top of one another with a brush of ハイディンガー, and to see it.
References
Alcoz, J.. "Haidinger's Brush". Polarization.com. December 26, 2006 reading.
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The length of U1.27 is both up to 4,040 million light-year, mean diameter and 1,630 million light-year [1]; [2] [4]. This is size to exceed far 1,380 million light-year in length of the Sloane great wall which is a maximum structure known by then [9]; [10]. The space which can observe of U1.27 at most of 23 times is only size [5]; [11]. Therefore, U1.27 is called alias Huge-LQG.
The galaxy becomes 325m in diameter when I reduce U1.27 to size (13,000km) of the earth, and the size of the earth is smaller than an atom.
Mass
U1.27 is one of 73 large quasi-stellar radio source group comprised of quasi-stellar radio source, and the placement of the quasi-stellar radio source lines up to quite describe the C-shape of the alphabet. It is thought that the mass of U1.27 is 6,100 quadrillion times (6.1 X 1018M☉) of the sun in total [2], and a galaxy belongs, and there is this more than 6 times of Pisces, Cetus supercluster Complex of 1 billion light-year in length comprised of approximately 60 galaxy clusters [12].
Distance
Seeing from the earth, U1.27 is at the 12,900 million light-year away position in the direction of Leo [1] and is the large quasi-stellar radio source group that existed in the times 8,700 million years ago. In other words, indicating being the large-scale structure that existed approximately 5 billion years after birth of the space [7].
Influence on cosmology
It is thought that the discovery of U1.27 gives a big problem in current astrophysics and space principle. That, by the current theory, bare になっているとされているが where a shock wave formed in the space after Big Bang makes large-scale structure of the current space, the size of the large-scale structure do not exceed approximately 1,200 million light-year [13]. The large-scale structure of the degree to exceed the theoretical values such as Sloane great walls a little was discovered so far, but U1.27 is a problem with this value much more at a point to exceed [1]; [4].
In addition, as for the existence of the large quasi-stellar radio source group such as U1.27, the space seems to be against space principle to be approximately uniform if I see it on an extremely big scale. A current mathematical description about the space is simplified excessively, and this may show an inappropriate thing to theorize large-scale structure of the real space. Possibly the space is more complicated, and a theoretical review may be required [3]; [5].
Furthermore, U1.27 may give some kind of answers about the formation of the supercluster to be able to put in the initial space. It is thought that the quasi-stellar radio source is in the form of very early days of the Milky Way which there is in the current space, and the large quasi-stellar radio source group that attracted them may be a pioneer figure of a galaxy cluster and the supercluster. However, I am mystery how huge structure such as U1.27 was formed in the young space which only passed from birth for 5 billion years. Therefore, it is thought that the mechanism that formed U1.27 may affect the evolution of the initial space in one way or another [3].
Quasi-stellar radio source to belong to
U1.27 was discovered by checking distribution of the quasi-stellar radio source registered with Sloane digital sky survey. Among 73 quasars belonging to U1.27, it is 13,616 million light-year (z=1.3713) of SDSS 105637.49+150047.5 that there is what there is to the nearest distance from the earth to 12,234 million light-year (z=1.1742) of SDSS 105140.40+203921.1, the most far-off distance. As for apparent magnitude being the brightest, it is a 19.080 class of SDSS 104321.62+143600.2 16.430 class of SDSS 105210.02+165543.7, that it is the darkest [2].
Other
It is 大 quasi-stellar radio source group same as U1.27, and, close to the apparent position of U1.27, U1.28 which is 2,050 million light-year in length exists. Because a value of the red shift is similar, the real distance is near approximately 100 million light-year, too. The number of the constitution quasi-stellar radio source is 34 [5].
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When I let light be incident on a material, the light scattering (ひかりさんらん) means a phenomenon to release light in all directions at the same time to take this in.
Table of contents
Principle of the light scattering
Explanation by the classical theory
The light scattering depends on the second wave being released by the vibration of the electric dipoleevoked by incident radiation as well as a reflection of the light. For example, when light is incident on an atom, the vibration of the electric dipole is evoked, and then the second wave is released, but when I observe the second wave in the future in an arbitrary direction if many atoms are distributed sparsely and at random, as for the strength, it is to the extreme sum of second wave from each atom, and generally there is not this to 0. This is light scattering.
In contrast, the second wave from each atom interferes it each other, and strength becomes 0 any place other than the specific direction when an atom is dense, and the density is the same. The second wave which does not disappear by a result of the interference becomes the reflection wave, and I interfere it with an incidence wave again, and there is refracted wave. The light scattering is caused by a material not being uniform generally in this way, and the material surface is not same in this, and the diffused reflection to open is included in the direction where borrowed light is various there, but I ignore the surface effect here and think about the light scattering to have inside of the material.
It has a big place where light of the sun performs atmospheric air molecules and Rayleigh scattering that the sky is blue
It depends on multiple scattering + Mie scattering that a cloud is white.
A fat ball (around 1-100 micrometers in diameter) causing a micelle (around 20-150 nanometers) of protein casein causing Rayleigh scattering to milk and Mie scattering exists. The fresh cream with much fat content looks white by the Mie scattering of the fat ball. The no fat milk is bluish by Rayleigh scattering, but looks white by multiple scattering.
The Tyndall phenomenon is dynamic scattering caused by the colloids. It was studied theoretically by Reilly and me. I can find colloidal molecular weight or size by checking light scattered in.
Microwave dispersion meter
I measure a target state by receiving the microwave that it is targeted for observation and irradiates a microwave into a pulse form and reflected.
References
Fumiaki Shibata "theory of the light scattering" (アグネ publication "solid physics" Vol.20 1985)
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This article comments on laws and ordinances in Japan without a description in particular. In addition, I may not reflect the latest laws and ordinances revision. Please talk about the case that oneself met with practically with a law-related expert. Please read the disclaimers.
In the Japanese number plate (just number plate), I list it about an automotive number plate in Japan. The official name of the number plate for the car in Japan varies according to the division of the vehicle and is considered to be 自動車登録番号標 (じどうしゃとうろくばんごうひょう) or 車両番号標 (しゃりょうばんごうひょう), a mark (I spread hail).
Table of contents
Summary
自動車登録番号標 (じどうしゃとうろくばんごうひょう) is prescribed in the number plate in case of the registration car as follows by Road Vehicles Law Article 19.
"
You must not offer the car for one of service if you do not display it to be easy to see a car registration number listed in 自動車登録番号標 which received a grant and this by a rule of Article 11 Clause 1 (includes a case to apply mutatis mutandis in article Clause 2 and Article 14 Clause 2.) by 自動車登録番号標交付代行者 of Minister of Land, Infrastructure and Transport or Article 25 by a place to establish in a Ministry of Land, Infrastructure and Transport law.
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About the installation, it is prescribed as follows by Road Vehicles Law enforcement regulations Article 7.
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I shall perform the installation of 自動車登録番号標 by the rule of law Article 11 Clause 1 (I include a case to apply mutatis mutandis in article Clause 2 and Article 14 Clause 2.) and Clause 5 and law Article 20 Clause 4 surely at the position that it is easy to look at of the front of the car and the back. But I can omit special large-sized motorcar にあつては which a tricar, a cover wrecker or the Minister of Land, Infrastructure and Transport appoints, front 自動車登録番号標.
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車両番号標 (しゃりょうばんごうひょう) is prescribed in the number plate in case of other cars including a light car and the motorcycle as follows by Road Vehicles Law Article 73.
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You must not offer this for one of service if you do not display it a subject of examination light car and two compact cars display 車両番号標 which listed the vehicle number that received designation by the rule of the Article 60 Clause 1 latter half in the position to establish in a Ministry of Land, Infrastructure and Transport law and to be easy to see the vehicle number.
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About the installation, it is prescribed as follows by Road Vehicles Law enforcement regulations Article 7.
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It is said that the positions to establish in a Ministry of Land, Infrastructure and Transport law of law Article 73 Clause 1 are as follows.
The position that compact car にあつては of 13 subject of examination light cars or subject of examination light car which is a cover traction engine or two, subject of examination light car にあつては except the subject of examination light car to raise in the position two last issue which the back is easy to see, the front and the back are easy to see
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The mark (I spread hail) is motor bikes less than small special car and 125cc, a number plate for taxation of the local rates based on the regulations of the city and district municipalities in case of the minicars, and the indication of the mark is required by the regulations. As for the vehicle which added a sidecar to motorcycles less than 125cc more than 50cc as an exception, the Road Vehicles Law top is treated as "the light car of two circles", and indication of 車両番号標 is required.
Other than mention contents and the letter layout to a number plate, there is a rule about a color or mounting location. In the case of a registration car, a metal seal is given a rear number plate at the time of installation, but will be changed to a seal new sequentially from 2004 because crimes to remove using a special tool occur frequently.
In the case of a wrecker, as for the vehicle to pull and the pulled vehicle, each is considered to be one vehicle, and a different number plate is touched.
In addition, the notation such as both sides of the large dump truck carrying the earth and sand and "Saitama (販) 12345" (as for (販) 販 of ○ box) listed in the back is called "an indication number" or "a uniform number" with the thing which is different from the registration number of the car.
The area name where the car is displayed by every examination for transportation branch office, car registration office of registration local 国土交通省陸事分野 is fixed. In most cases, the name of the examination for transportation branch office, car registration office will be just displayed, and there are many things which I took from the prefectures name and the city name.
Generally, I take one column on sigil and am called "5 numbers" or "3 numbers".
A shape and size
It is a rectangle with aspect ratio same as a North American number plate, and large size is adopted even if I see it worldwide. The introduction of the number plate made in reconstruction-related expensive plastic advances at light weight in Europe, but aluminum which carved a seal by a letter or number as for the Japanese thing convexly is made (except the character light type number). In addition, it is only Japan that the big number plate of dimensions is prepared for by a large-sized car.
大型番号標 (おおがたばんごうひょう)
Popular name Daban (おおばん): 220mm in height X 440mm in width
The aspect ratio is 1:2. I fix it to two places, the lower part with two places of bolts in the upper part.
中型番号標 (ちゅうがたばんごうひょう)
A popular name middle-sized board (ちゅうばん): 165mm in height X 330mm in width
The aspect ratio is 1:2. I fix it with two places of bolts in the upper part.
小型番号標 (こがたばんごうひょう)
A popular name scutellum (I carry it): 125mm in height X 230mm in width
The aspect ratio is 1:1.84. I fix it with two places of bolts in the upper part.
The change to a European style oblong number plate was considered in "round-table conference [1] about the way of the number plate" of Ministry of Land, Infrastructure and Transport in 2012 [2], but it was a seeing off saying, "I could not explain legitimacy and the merit that really only reviewed the shape of the number plate enough" [3].
As for the color, the car for private use is a green letter on cloth of white background except a light car of the first registration after January, 1975, and the business use is a Chinese classics character on the green tract of land. In addition, a common motorcycle more than 250cc and the large motorcycle gain green limits for private use and it is for business and is accompanied by a white frame. As for the light car of the first registration, the black, business use are yellow characters to a black ground private use in the yellow place after January, 1975.
As for the motor bike, the minicar, the small special car, the colour of the ground of the plate is set of common motorcycles less than 125cc every tax division by city and district municipalities. A distinction method and the indication contents have the difference by the local government, but are often a peach (more than 91cc), yellow (90cc or less), white, light blue, green almost each. The letter color is greatly uneven in the local government, but a lot of deep color such as black or the dark blue is used.
Place name
The place name of four characters is displayed from one character indicating the examination for transportation branch office paid in a number plate or car registration office. "The local number" is introduced after October 10, 2006, and the place name increases, and there is 116 kinds of current place name.
The number from one column to three columns to be called "sigil" by the right side of the place name in a number plate is displayed. I understand the rough use (passenger use, freight, scoop use, either large-scale special) and size (either usually small) of the car by one column on sigil. I know whether a number plate paid in the case of three columns is a hope number.
Things of the freight use are usually classified as a common freight car among cars [4]. Daban is applied to large freight more than more than maximum load capacity 5t or vehicle gross weight 8t and specific medium-sized freight, and a middle-sized board is applied to under greatest load capacity 5t and the medium size freight of under vehicle gross weight 8t.
Ride capacity is usually classified in the more than 11 things as a common riding together car by passenger use among cars. Daban is applied to trailer buses more than more than 30 ride capacity or vehicle gross weight 8t, and a middle-sized board is applied to the microbus which is lower than 29 ride capacity.
It was three-wheeled freight, but is applied to a small size freight car same as "4" now before sigil is three columns. But it is not registered until "4" is buried.
It was three-wheeled passenger use, but is originally applied to a subcompact car same as "5" now. But it is not registered until "5" is buried. "5" is buried because of some serial numbers that are popular in some districts with three columns of sigil with two columns of sigil in Nagoya, and "7" is registered.
A car to use for the use of the scoop established in laws and ordinances is usually a car or is classified as a scoop use car without depending whether it is a compact car. More than more than maximum load capacity 5t or vehicle gross weight 8t, Daban is applied to a vehicle satisfying either which is higher than 30 ride capacity, and a middle-sized board is applied other than it.
When the size of the body meets either more than overall height 2,800mm more than 4,700mm in total length more than overall width 1,700mm by car with special structure established in laws and ordinances, I am classified as a special large-sized motorcar.
Among special large-sized motorcars, the thing prescribed by a car mortgage method Article 2 proviso is classified as a construction machine.
Light car (subject of examination)
One column of top is "4" and "6" - freight
"Ra" and the "ru" are used for the ceremony of character light a hiragana letter in 47 and 480-482. 483-499 and 680-698 are used for a hope number.
One column of top is "5" and "7" - passenger use
"Ra" and the "ru" are used for the ceremony of character light a hiragana letter in 57 and 580-582. 583-599 and 780-798 are used for a hope number. "5" is made up in some popular serial numbers in some districts, and "7" is published.
About the light car, I made sigil three columns in the whole country from January 4, 2005, and a hope number system was enforced.
A class number is three columns, and two columns of bottoms are used for (when I perform erasion registration in conjunction with name changes to step over the jurisdiction) that 99 things are for transference erasion registration. I am only listed in an erasion registration certificate, and there is not the thing paid as a plate. [the source required] but sigil 599 is paid in the serial numbers that have finished paying to 598 for a hope number of the light cars.
In Nagasaki and Kagoshima, the remote island office [7] of Okinawa, the Yaeyama office of Okinawa uses 28 for two columns of the class number bottoms using 27 (but the remote island number of Kagoshima was finished by the appearance of the Amami number which was the local number). For example, 5 numbers paid in Izuhara office become "Nagasaki 527". But the rent-a-car does not use 27 and 28 for lower two columns so that it is said with "Nagasaki 500 れ" without becoming "Nagasaki 527 わ" by an exception.
As for the general withdrawal use, two columns of bottoms are from 00 to 29 3 figures at first, and it is for the public hope number, and, about the registration car, as for 4(6), 5(7) and 8, 30-98 is assigned to 30-79, other class number a class number. But, as for detailed time, I am missing, but it is reduction by 09 from 00, and, as for the general withdrawal use, lower two columns are changed later to be affected by 28 for the public hope numbers from 10. Sigil is assigned to 6 and 7 for the hope numbers other than two columns of bottoms 99.
80-99 is used for two columns of bottoms about the light car.
With the local number assigned on November 17, 2014, the hope number starts from two columns of bottoms 10. The Mount Fuji number remarkably varies in a withdrawal method by extending over two prefectures.
Kind
Yamanashi
Shizuoka
Remarks
Usually
X00 - X02
X03 - X09
-
Light car
X80
X81, X82
-
The hope number
X10 - X39
X40 - X98
The 4.5.8 number is X40 - X79
The hope number of the light car
X83 - X87
X88 - X99
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Two-wheeled vehicle
A scutellum is used for two compact cars more than 250cc, and the sigil does not have displacement volume. "V" enters by the increase of the registration vehicle "(the place name) "C" of the Romaji or "L" like C あ XX-XX" in some areas (as for the October 1, 2000 establishment, the publication 2001).
A hiragana letter of one character is displayed in a number plate in the house on the left of a series designation number or the vehicle number.
Car (registration car)
A cloth of white background green character (private use): は, ひ, ふ, ほ, ま of ぬ, ね ・ sees it in さ, す, せ, そ, た, ち, つ, て, と, な ・; む, め, も, や, ゆ, ら, り, る, ろ
A cloth of white background green character (outside) owned by (U.S. forces where it is for a stationing officer for business use): E, H K M
A cloth of white background green character (officer private possession car) which I brought in from (own country where it was for a stationing officer): T
A cloth of white background green character ((officer private possession car) that it is for a stationing officer): Y
A cloth of white background green character (car) of the officer discharged from military service military retirement in (Japan where it was for a stationing officer): よ
A cloth of white background green character (for 貸渡 (rent-a-car)): れ, わ
Green tract of land engraved letters (for the business): Oh, is, and obtain it, and か comes う; く, け, こ ・
Light car (660cc cubic centimeter displacement or less)
A yellow black base character (private use): Oh, is, and obtain it, and come, and か sees は, ひ, ふ, ほ, ま of ぬ, ね ・ in く, け, こ, さ, す, せ, そ, た, ち, つ, て, と, な ・ う; む, め, も, や, ゆ, よ ・ and others, る, を
A yellow black base character (for the stationing officer): A, B
A yellow black base character (for 貸渡 (rent-a-car)): わ
A black ground yellow character (for the business light): り, れ
Small two-wheeled vehicle (subject of examination: 250cc cubic centimeter displacement super)
A cloth of white background green character green frame (private use): Oh, is, and obtain it, and come, and か sees は, ひ, ふ, ほ, ま of ぬ, ね ・ in く, け, こ, さ, す, せ, そ, た, ち, つ, て, と, な ・ う; む, め, も, や ・ and others, る, を
A cloth of white background green character green frame (for the stationing officer): よ, A B E H K M T Y
A cloth of white background green character green frame (for 貸渡 (rent-a-car)): ろ, わ
A green tract of land engraved letters white frame (for the business): ゆ, り, れ
Because there is not sigil, "C L V" enters when I use up a hiragana letter.
Light two-wheeled vehicle (the subject of examination outside: lower than 250cc cubic centimeter displacement)
A cloth of white background green character (private use): Oh, is, and obtain it, and come, and か sees は, ひ, ふ, ほ, ま of ぬ, ね ・ in く, け, こ, さ, す, せ, そ, た, ち, つ, て, と, な ・ う; む, め, も, や, ゆ, よ ・ and others, る, ろ, を
A cloth of white background green character (for the stationing officer): A, B
A cloth of white background green character (for 貸渡 (rent-a-car)): わ
Green tract of land engraved letters (for the business): り, れ
Supplementary of the hiragana letter
I do it and pass and am and obtain it, and I am not used by reasons less than んは.
"O": To avoid misreading with the "a" "su" "mu" of the similar print. I use "wo" for a substitute of the "o".
"Shi": I suggest "death".
"He": I suggest "wind".
"N": I am hard to hear pronunciation in comparison with other hiragana letters.
The name of the hiragana letter style of handwriting is called "Komatsu style of handwriting". "Hiroshima style of handwriting" was adopted about Hiroshima, Fukuyama, Okayama (only as for the light car, the two-wheeled vehicle), the Yamaguchi number each, but, as for the past, "central part style of handwriting" adopts "Komatsu style of handwriting" in all number plates about Nagoya, Owari Komaki, Mikawa, Toyohashi, Gifu, Hida, Mie, Hamamatsu, Shizuoka, Numazu, Fukui, Ishikawa, the Toyama number.
In addition, size of a thing and the "no" that are wider than others is bigger than others, and the interval of the stick of the top and bottom of the right half of the "ni" is seen in the some differences in number plates of the publication in Wakayama in Hyogo in Osaka of Osaka or Naniwa with the same "Komatsu style of handwriting".
In the number plate of the registration car, 1-4 columns of Arabic numeric to be called "a series designation number" by the right of the hiragana letter is displayed. The names are different and, in the case of "車両番号標 such as light cars," say "a vehicle number". It is carved a seal a number by the right making even, and a figure to become the blank in a sign of "・" is buried when it is less than three columns, and "-" (hyphen) is added between the second column and the third column at the time of four columns (because the reason is easy to memorize the one that I divided into by two columns).
I have 9,999 ways of numbers from "...1" to "99-99", and all numbers are paid other than the hope number system in turn basically. ただし駐留軍以外の車両では下2桁が「42」「49」のものはそれぞれ「死に」「死苦」「始終苦(しじゅうく)」「轢く」などを連想させて縁起が悪いとされるため払い出されない。 「42-19」(死に行く)や「・4 27」(死にな)、「96-41」(苦しい)、「96-46」(苦しむ)は欠番でなく、実際に存在する。 駐留軍の場合、下2桁が「42」「49」のものは払い出されるが、下2桁が「13」のものは払い出されない。 従って、分類番号2桁以前は、下2桁が13・42・49のものが100通りずつあるので、駐留軍以外の車両の一連指定番号は9,799通り、駐留軍の車両の一連指定番号は9,899通りであった。
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