2021年SSAL摄影大赛评比出炉！

《Tyndall effect》

——Vincy

Most of the time, the light rays are not visible. We can see the light beams because of dust and water are existing in the air, which is in colloidal dispersion. In the picture, there are several light beams, and this is known as ‘Tyndall effect’-- effect of light scattering through colloidal dispersion. Some people call them ’Jesus Light ’ in order to describe this brilliant view. 

To begin with, dust and water in the air are scattered particles. Then, sunlight prefer to collided with these particles instead of through them. As the sunlight pass the clouds, it meet small particles which turn it into visible light. Hence, these gorgeous beams which can be seen.

大多数的时候，光线是看不见的。我们之所以能看到光束是因为空气中有灰尘和水（胶状分散）。在这张照片中，有几束光束被称为“丁达尔效应”—— 通过胶体分散的光散射。有些人称之为“耶稣之光”来描述这震撼的美景。

首先，空气中的灰尘和水是分散的微粒。然后，阳光会与这些粒子碰撞，而不是穿过它们。当阳光穿过云层会遇到小颗粒，这些小颗粒将阳光改变成为可见光。因此，这些绚丽的光束可以被我们所看到。 

《幕》

——Angelina

The reason why the sunset is red is that the atmosphere penetrated by the sunlight is thickened at sunset, while yellow and red light have the greatest penetration ability, and other light rays are scattered, so the sun looks deep yellow and deep red at this time. 

星河依然灿烂，阳光依然干净，世界也依然在长久深情中缓缓朝前走。于是时间奔流，得以见证人间在漫长岁月里所有的永恒和不朽。

《Christmas trees》

——Ciera

This photo was taken at the Banyan Tree Resort in Guilin which is in the Guangxi Province. At the end of 2019, in December. It was not Christmas or Christmas Eve at that time, but this resort hotel had already placed such a high Christmas tree in their hotel lobby and next to the restaurant. At that time, there were not many resorts or places where tourists would stay with such meticulous preparation, after all, they were in China.  

There are cultural differences between China and the West, including eating habits, clothing, festivals, and so on.  In this picture, it can be reflected that culture can be mixed and packaged. We can see that in a hotel decorated in Chinese style, the Christmas tree is undoubtedly a highlight.  It is precisely because Western culture has brought out a lot of different holiday atmospheres, this Christmas tree is indeed a foreshadowing for the coming Christmas Eve on the 24th and Christmas on the 25th, bringing a different experience to the guests.  

Of course, on the buildings outside the lobby, due to the combination of shapes and colors, it looks more like an ancient Chinese design, including a dark square window in the middle, and a staircase-like height on top.  It can be seen that mathematical measurement has a great use in this design.  The upturned double-sided decoration is from straight to curved, and will also be effective when it rains. The mathematical design concept can ensure that there is less water leakage in certain environments. From high to low, layer by layer, so as to change the height of the bumps.This Christmas tree is not a natural phenomenon, but a man-made creativity.  

When the gorgeous lights spread on the Christmas tree, the light is particularly dazzling. Historically speaking, an innovation was drawn on the basis of cultural exchanges.

这张照片是在2019年年末也就是12月份在桂林的悦榕庄度假酒店拍摄的。当时并没有到圣诞节或者是平安夜，但这家度假酒店已经摆放好了这么高的一颗圣诞树在他们的酒店大堂里，餐厅的旁边。当时并没有很多度假村或者游客住宿的地方会这样精心准备，毕竟是在中国。

中西方是存在着文化上的差异，包括在饮食习惯，服装，节日等等。在这张图片中，可以反映出文化是可以被混合包装的，我们可以看出在一家中式风格装修的酒店里，圣诞树无疑是一个亮点。正因为西方的文化带出了很多不一样的节日氛围，这棵圣诞树确实是为了后来即将到来的24日的平安夜与25日的圣诞节作一个铺垫，给客人带来不一样的体验。

当然，在大堂外围的建筑上，由于形状和颜色的搭配，更像是中国老一点的设计，包括在正中间的正方形黑色窗，顶上一层又一层的像楼梯一般的高度，都能看出数学计量在这个设计上有着很大的用途。翘起来的双边装饰，是从直线到曲线，也会在下雨的时候有所作用，数学上的设计理念可以保证在某些环境下少点漏水。从高至低，层层递进，从而改变凹凸的高度。这棵圣诞树并非自然现象，而是人为的创意。

当华丽的灯光铺满在圣诞树上，光芒就格外的耀眼。在历史上来讲，是在文化交流的基础上，画出了一道创新。

《Let Life be Beautiful Like Summer Flowers》

——Vincy

The environment may be damaged by the development of the economy. Finding out the equilibrium point between the environment and economic development is a dilemma for us to consider.

经济发展可能导致环境被破坏。找出环境与经济发展之间的平衡点是我们必须考虑的一个难题。

《Reflection》

——Berlin

A reflection is an equal-size virtual image of light shining on calm water. The imaging principle follows the principle of plane mirror imaging.

倒影是光照射在平静的水面上所成的等大虚像。成像原理遵循平面镜成像的原理。

《Frog》

——Berlin

In the case of sufficient water vapor, breeze and stable atmosphere, when the relative humidity reaches 100%, water vapor in the air will condense into fine water droplets suspended in the air, which reduces the visibility at ground level. This weather phenomenon is called fog. It usually occurs between February and April in spring. Forming conditions: one is cooling, two is humidification, increase the content of water vapor. 

在水汽充足、微风及大气稳定的情况下，相对湿度达到100%时，空气中的水汽便会凝结成细微的水滴悬浮于空中，使地面水平的能见度下降，这种天气现象称为雾。多出现于春季二月至四月间。形成的条件：一是冷却，二是加湿，增加水汽含量。