點解好多玻璃樽個底係凸了上去的,但是唔係平ge...?
同d friend吹水,諗好奈都諗唔到點解.....
氣水, 紅酒, 白酒, 啤酒....個d樽都係咁......

向下凸咪企o吾穩o羅... >_>

我估係做ge時候企得穩d~~~
即係有一樣野係凸返出黎ge~~

都係方便　放置吧

凸了怎放

唔好意思....我指點解凸了上去但是唔係平ge...

紅酒同白酒凸了上去係因為
讓酒時~佢地要放係一個架上面係訓係到...
佢地要定時定候~要轉一轉個樽~等佢
d~物質輝發得好d~!!!氣水就唔知=.-"

我估有兩個原因
1 係同"啤" 出黎有關吧,
樽0係啤0個陣會fill in d gas 去令佢成型
如果係平ge 會d pressure 會令到上薄下厚

2. 如果個底平, 我估會比較易碎, 半球體會實淨d , 裝液體時唔會咁受力掛

well think about it. if u push the bottle or can. the bottom will never move. but if  it's flat. imagine. it will be pushed out and become unstable. so that shape is to give the support shape with the same material
i think :p

增加摩擦力??????????平既話咪少D摩擦力.............易跌D lo.........

防碎
原理同水壩嘅栱形一樣
向內弧形嘅水壩 當中心受力時
可以緣住弧形兩邊分散外力
壓力會向兩邊伸展
情形同用手心榨碎雞蛋一樣
任你幾大力都好難用手掌榨碎隻雞蛋一樣(完整嘅雞蛋)
因為玻璃瓶比膠樽缺少變形能力
受壓時會將壓力集中喺最弱嘅位置
啫係平嘅底部 一壓就爆底...

.......

甘樣可以裝小D酒呃你錢,睇起上來好似好多