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@leftsidestory@mstdn.social
2025-06-11 00:30:00

Urban Life 101 🏙️
城市生活 101 🏙️
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Ilford FP4 E.I. 64 **Alt text in English:** A black and white photograph of a puddle on a paved surface. The puddle reflects a utility pole along with some surrounding trees or foliage. The reflection appears slightly distorted due to ripples and debris in the water. **Alt text in Chinese:** 一张黑白照片，显示在铺砌地面上的水坑。水坑倒映出一根电线杆以及一些周围的树木或植物。由于水面的波纹和碎屑，倒影看起来有些扭曲。
Ilford FP4 E.I. 64 **English Alt Text:** "A black and white photograph of a plant with large, broad leaves. The plant is situated indoors, near a window, with light filtering through the leaves, creating a dramatic contrast and shadow effect. The leaves are detailed and appear slightly wilted or drooping." **Chinese Alt Text:** "一张黑白照片，展示了一株具有大而宽叶子的植物。植物位于室内，靠近窗户，光线透过叶子，形成戏剧性的对比和阴影效果。叶子细节清晰，看起来有些枯萎或下垂。"
Ilford FP4 E.I. 64 **English Alt Text:** "A black and white photograph of a bicycle parked and secured to a metal bike rack. The bike is positioned at an angle, with the front wheel prominently displayed in the foreground. The word 'FOREVER' is visible on the frame of the bicycle. The background consists of a paved sidewalk and additional bike racks." **Chinese Alt Text:** "一张黑白照片，展示了一辆自行车停放并固定在金属自行车架上。自行车以一定角度摆放，前轮清晰地显示在前景中。自行车车架上可以看到“FOREVER”字样。背景是铺砌的人行道和更多的自行车架。"
Ilford FP4 E.I. 64 **English Alt Text:** "A black and white photograph of a staircase in what appears to be a subway or underground station. The stairs are equipped with a central handrail and are flanked by walls on either side. The lighting is artificial, casting shadows and highlighting the steps. The stairs lead upwards, suggesting an exit or an upper level." **Chinese Alt Text:** "一张黑白照片，展示了一个看起来像是地铁或地下站的楼梯。楼梯中央设有扶手，两侧有墙壁。灯光是人工的，投下阴影并突出了台阶。楼梯向上延伸，暗示出口或上一层。"

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@arXiv_physicsgeoph_bot@mastoxiv.page
2025-06-17 11:29:13

Aerodynamic roughness of rippled beds under active saltation at Earth-to-Mars atmospheric pressures
C. A. Alvarez, M. G. A. Lap\^otre, C. Swann, R. C. Ewing, P. Jia, P. Claudin
arxiv.org/abs/2506.13296

Aerodynamic roughness of rippled beds under active saltation at Earth-to-Mars atmospheric pressures
As winds blow over sand, grains are mobilized and reorganized into bedforms such as ripples and dunes. In turn, sand transport and bedforms affect the winds themselves. These complex interactions between winds and sediment render modeling of windswept landscapes challenging. A critical parameter in such models is the aerodynamic roughness length, $z_0$, defined as the height above the bed at which wind velocity predicted from the log law drops to zero. In aeolian environments, $z_0$ can variabl…

@leftsidestory@mstdn.social
2025-05-30 00:30:01

Natura Urbana V 🏡
城市自然 V 🏡
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Ilford FP4 @ ISO 80 **English:** This black and white image shows an electrical warning post situated in a grassy area. The post is rectangular and has text and symbols indicating the presence of underground cables. The grass around the post appears dry and slightly overgrown, suggesting a rural or less-maintained area. The warning post serves as a caution to prevent any accidental damage to the underground utilities. **Chinese:** 这张黑白照片展示了一个位于草地上的电力警示柱。警示柱呈长方形，上面有文字和符号，指示地下有电缆。柱子周围的草看起来干燥且略显…
Ilford FP4 @ ISO 80 **English:** This black and white photograph captures a scene dominated by a chain-link fence in the foreground. The fence creates a sense of separation and barrier. Behind the fence, the image reveals a somewhat cluttered and indistinct background, which may include various objects or debris. The overall mood of the image is somber and reflective, enhanced by the monochromatic tones. The image may evoke themes of confinement, isolation, or abandonment. **Chinese:** 这张黑白照片…
Ilford FP4 @ ISO 80 **English:** This black and white image depicts a tranquil park scene. Tall trees line a pathway that meanders through the park, providing shade and a sense of serenity. Benches are placed along the path, inviting visitors to sit and enjoy the peaceful surroundings. The park appears well-maintained, with neatly trimmed grass and a few scattered rocks. The overall atmosphere is calm and inviting, making it an ideal place for relaxation and contemplation. **Chinese:** 这张黑白照片…
Ilford FP4 @ ISO 80 **English:** This black and white photograph captures a serene body of water, possibly a lake or a pond. The water surface is calm, with gentle ripples reflecting the light. In the center of the image, a small patch of reeds or aquatic plants emerges from the water, adding a touch of natural beauty to the scene. The simplicity and tranquility of the image evoke a sense of peace and solitude. **Chinese:** 这张黑白照片拍摄了一片宁静的水域，可能是一个湖泊或池塘。水面平静，轻柔的涟漪反射着光线。在画面中央，一小片芦苇或水生植物从水中浮现，为景色…

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@leftsidestory@mstdn.social
2025-05-30 00:30:01

Natura Urbana V 🏡
城市自然 V 🏡
📷 Nikon FE
🎞️Ilford FP4 Plus, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Ilford FP4 @ ISO 80 **English:** This black and white image shows an electrical warning post situated in a grassy area. The post is rectangular and has text and symbols indicating the presence of underground cables. The grass around the post appears dry and slightly overgrown, suggesting a rural or less-maintained area. The warning post serves as a caution to prevent any accidental damage to the underground utilities. **Chinese:** 这张黑白照片展示了一个位于草地上的电力警示柱。警示柱呈长方形，上面有文字和符号，指示地下有电缆。柱子周围的草看起来干燥且略显…
Ilford FP4 @ ISO 80 **English:** This black and white photograph captures a scene dominated by a chain-link fence in the foreground. The fence creates a sense of separation and barrier. Behind the fence, the image reveals a somewhat cluttered and indistinct background, which may include various objects or debris. The overall mood of the image is somber and reflective, enhanced by the monochromatic tones. The image may evoke themes of confinement, isolation, or abandonment. **Chinese:** 这张黑白照片…
Ilford FP4 @ ISO 80 **English:** This black and white image depicts a tranquil park scene. Tall trees line a pathway that meanders through the park, providing shade and a sense of serenity. Benches are placed along the path, inviting visitors to sit and enjoy the peaceful surroundings. The park appears well-maintained, with neatly trimmed grass and a few scattered rocks. The overall atmosphere is calm and inviting, making it an ideal place for relaxation and contemplation. **Chinese:** 这张黑白照片…
Ilford FP4 @ ISO 80 **English:** This black and white photograph captures a serene body of water, possibly a lake or a pond. The water surface is calm, with gentle ripples reflecting the light. In the center of the image, a small patch of reeds or aquatic plants emerges from the water, adding a touch of natural beauty to the scene. The simplicity and tranquility of the image evoke a sense of peace and solitude. **Chinese:** 这张黑白照片拍摄了一片宁静的水域，可能是一个湖泊或池塘。水面平静，轻柔的涟漪反射着光线。在画面中央，一小片芦苇或水生植物从水中浮现，为景色…

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Folgen Sie dem Link PayPal.Me/dingsterdingster und geben Sie den Betrag ein. Es ist bequem und sicher. Sie haben noch kein PayPal-Konto? Kein Problem.

@randy_@social.linux.pizza
2025-05-29 18:17:54

Peace of mind.
#praha #nature #catsofmastodon #europe

A serene lake is surrounded by lush greenery and trees under a partly cloudy blue sky. Reflections of the trees can be seen on the water's surface.
A small, tabby cat sits on a stone pathway surrounded by greenery and flowers. In the background, there is a decorative figure of a person with a beard, partially obscured by rocks and plants.
A serene lakeside scene at sunset, featuring a foot resting on wooden planks with gentle ripples on the water surface, surrounded by trees and a partly cloudy sky.