Sl
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14
Outdoor tilt illusion where an ascending slope appears to descend or a
descending slope appear to ascend
e.g.
Magnetic Hill in Canada
Wikipedia
since September 20, 2014
Slope illusion
in Tsunan and Tokamachi, Niigata, Japan
There are as many as seven points of illusion in a single, nearly straight
road!
August 14, 2013, reported by Akiyoshi Kitaoka and Seiichi Tsuinashi, supported
by a JSPS kaken-hi grant and
R-GIRO
1.1 The lowermost point: the upper view
It is a pity that we forgot to take photos...
1.2 The lowermost point: the lower view
The slope appears to be an ascent, though it is a descent. It is a pity
that we did not record the data...
Copyright Akiyoshi Kitaoka 2013 (August 14)
2.1 The second lowermost point: the upper view
The slope behind the crest is not viewed but appears to be a descent. Actually,
the invisible slope is an ascent of 0.8° degee (1.4%) and the slope
in front of the crest is an ascent of 2.6° degee (4.5%).
The slope in front of the sag may appear to be a descent but it is actually
an ascent of 0.8° degee (1.4%). The slope behind the sag is an ascent
of 2.8° degee (4.9%).
2.2 The second lowermost point: the lower view
The slope in front of the sag may appear to be an ascent but it is actually
a descent of 0.8° degee (1.4%).
3.1 The third point from the lowermost one: the upper view
The slope where a mirage is viewed appears to be a descent but it is actually
an ascent of 1.0° degee (1.7%). The slope in front of as well as that
behind the sag are both ascents of 2.8° degee (4.9%).
Copyright Akiyoshi Kitaoka 2013 (August 15)
The slope in front of the sag appears to be a descent but it is actually
an ascent of 1.0° degee (1.7%). The slope behind the sag is an ascent
of 2.8° degee (4.9%).
3.2 The third point from the lowermost one: the lower view
The slope between the two points where mirages are seen appears to be an
ascent but it is actually a descent of 1.0° degee (1.7%).
4.1 The middle point: the upper view
The slope in front of the sag appears to be a descent but it is actually
an ascent of 0.9° degee (1.6%). The slope behind the sag is an ascent
of 2.9° degee (5.1%).
The slope in front of the sag appears to be a descent but it is actually
an ascent of 0.9° degee (1.6%). The slope behind the sag is an ascent
of 2.9° degee (5.1%).
4.2 The middle point: the lower view
The slope behind the sag appears to be an ascent but it is actually a descent
of 0.9° degee (1.6%). The slope in front of the sag is a descent of
2.9° degee (5.1%).
The slope appears to be an ascent but it is actually a descent of 0.9°
degee (1.6%).
These are all descents.
5.1 The third point from the uppermost one: the upper view
The slope in front of the sag appears to be a descent but it is actually
an ascent of 1.5° degee (2.6%). The slope behind the sag is an ascent
of 2.5° degee (4.4%).
The slope behind the mirage appears to be a descent but it is actually an ascent of 1.5° degee (2.6%).
5.2 The third point from the uppermost one: the lower view
The slope behind the sag appears to be an ascent but it is actually a descent
of 1.5° degee (2.6%). The slope in front of the sag is an ascent of
2.5° degee (4.4%).
The slope appears to be an ascent but it is actually a descent of 1.5° degee (2.6%).
The slope behind the sag appears to be a descent but it is actually an
ascent of 1.5° degee (2.6%). The slope in front of the sag is an ascent
of 2.5° degee (4.4%).
6.1 The second uppermost point: the upper view
The slope in front of the sag appears to be a descent but it is actually
an ascent of 1.1° degee (1.9%). The slope behind the sag is an ascent
of 2.7° degee (4.7%).
6.2 The second uppermost point: the lower view
The slope behind the sag appears to be an ascent but it is actually a descent
of 1.1° degee (1.9%). The slope in front of the sag (where a mirage
is viewed) is an ascent of 2.7° degee (4.7%).
The slope appears to be an ascent but it is actually a descent of 1.1° degee (1.9%).
7.1 The uppermost point: the upper view
The slope in front of the sag appears to be a descent but it is actually
an ascent of 0.6° degee (1.0%). The slope behind the sag is an ascent
of 2.1° degee (3.7%).
7.2 The uppermost point: the lower view
The slope appears to be an ascent but it is actually a descent of 0.6°
degee (1.0%).
It took 9 hours from Kyoto by car.
Seiichi's slope illusion pages
Slope illusion 13
(Slope-ascending water in Tsunan-twon, Niigata-prefecture, Japan)
Slope illusion 12
(Slope-ascending water in Ujitawara-town, Kyoto-prefecture, Japan)
Slope illusion 11
(Skewed staicase of the Shigaraki Ceramic Cultural Park, Shiga, Japan)
Slope illusion 10
(Skewed staicase of Shomaru railway station, Saitama, Japan)
Slope illusion 9
(Illusory slope in Minamitane-town, Tanegashima-island, Kagoshima, Japan)
Slope illusion 8
(Illusory slope in Nakatane-town, Tanegashima-island, Kagoshima, Japan)
Slope illusion 7
(Danjo-zaka and Okyo-zaka in Amakusa-Shimojima, Kumamoto, Japan)
Slope illusion 6
(Slope-ascending river in Miyama, Nantan, Kyoto, Japan)
Slope illusion 5
(Ghost slope in Okagaki, Onga-county, Fukuoka, Japan)
Slope illusion 4
(Slope-ascending water in Tanushimaru, Kurume, Fukuoka, Japan)
Slope illusion 3
(moving-back slope in Hashikami, Aomori, Japan)
Slope illusion 2
(Mysterious slope in Towa, Iwate, Japan)
Slope illusion 1
(Mystery zone in Yashima, Takamatsu, Kagawa, Japan, etc.)
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