Christmas: Science Picture Challenge 聖誕：科學照片挑戰 #1

首先，很感謝@mcw 舉辦這個聖誕：科學照片挑戰，有關比賽詳情請參看https://steemit.com/sciencepic/@mcw/christmas-science-picture-challenge-1-with-sbd-and-sp-prize-1-sbd-sp

Firstly, thank you @mcw for holding this Christmas: Science Picture Challenge. The challenge details can retrieve at the following link https://steemit.com/sciencepic/@mcw/christmas-science-picture-challenge-1-with-sbd-and-sp-prize-1-sbd-sp

我要提交作為參賽作品的是聖誕樹上的聖誕裝飾球。

My entry is about the Christmas Ball on the Christmas Tree.

想到這個題目之後我進行了一些搜索，尋找一些有關凹凸面鏡的資料，首先看

這個影片會明白到凸面鏡會見到影像會從水平方向縮小，凹面影即會從水平方向發大。

When I found on this Christmas ball topic, I research a convex mirror and a concave mirror. I found on this YouTube and know about convex horizontally reduce size. A concave mirror will enlarge an object.

再看了

　
會知道球狀的不同，凸面鏡為正立的虛像水平一樣，不會反轉，但越來越小，越遠的物件在鏡內就越細小。但凹面鏡，越近的影像會產生倒立的影像。

I also watch another video. I know semi-sphere mirror will have a bit different. A convex mirror will remain horizontally the same but be reducing the size. A concave mirror will invert when the object is near.

這個聖誕裝飾球其實是凸面鏡，所以我的影像會越來越大，家裡的其他事物雖能入鏡，但會縮小。

This Christmas ball is a convex mirror. A convex mirror will reflect the image as horizontally. It will not invert but getting smaller.

圖片來源：維基百科

我差點都忘記了凹面鏡與凸面鏡的分別，因為這個比賽令我做了一點搜索，才喚起曾經的知識。

I nearly forgot about the difference between a convex mirror and a concave mirror. Because of this contest, I awaken the knowledge I already learnt.

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