材料:
1.玻璃管或毛細管
![](http://static.flickr.com/52/117413474_4c64339a1b_m.jpg)
2.本生燈或瓦斯噴燈
![](http://static.flickr.com/49/117413381_2a3ec6c779_m.jpg)
![](http://static.flickr.com/56/117413280_8e6674b8f8_m.jpg)
3.打火機
4.硬紙卡
5.線香
6.膠帶
![](http://static.flickr.com/39/117414480_72b2d3842d_m.jpg)
步驟:
1.手持玻璃管的兩端在本生燈或瓦斯噴燈上加熱,直到玻璃管受熱部位軟化,雙手水平拉開玻璃管。就可以拉開很長一條毛細管。
![](http://static.flickr.com/38/117413881_027f578471_m.jpg)
2.把毛細管截短成約5公分的短管。
3.毛細管伸入火焰中加熱,使一端成為一個玻璃球。
![](http://static.flickr.com/56/117413671_f6712b126e_m.jpg)
![](http://static.flickr.com/34/117414260_f843a53202_m.jpg)
4.準備兩張硬紙卡,上面用點燃的線香燒穿出小洞,洞的大小必須比玻璃球小,我們要把玻璃球夾在紙卡當中,太大容易掉出來。玻璃球的一端用膠帶貼在紙卡上固定。
![](http://static.flickr.com/49/117414618_351140d3f2_m.jpg)
![](http://static.flickr.com/40/117414770_aae3126ecf_m.jpg)
5.紙卡夾住玻璃珠後,就可以把四邊用膠帶封好。簡單的顯微鏡就成功了。
![](http://static.flickr.com/34/117414926_905a85a571_m.jpg)
6.觀察的方式是把標本靠在紙片上,眼睛從另一邊貼近對著日光燈或天空就可以看見了。
它的放大倍率的公式是
I=333/d
I是放大倍率,d是玻璃球的直徑(單位是mm)
直徑2mm小玻璃球放大倍率就超過100倍了。
它的焦點公式是
f=1.3r
f是焦點距離,r是半徑
直徑2mm小玻璃球的焦點距離(從圓球中心算)約1.3mm,所以標本幾乎是貼著玻璃珠才會清楚。
下面是用這種自製顯微鏡拍攝的動植物標本
![](http://static.flickr.com/47/117447663_e4b0772546_m.jpg)
![](http://static.flickr.com/41/117447592_d2712150dc_m.jpg)
![](http://static.flickr.com/37/117447484_2131115b22_m.jpg)
![](http://static.flickr.com/39/117447370_5da2fabb6b_m.jpg)
![](http://static.flickr.com/42/117447262_275c071020_m.jpg)
![](http://static.flickr.com/19/117447154_96d268bd9a_m.jpg)
![](http://static.flickr.com/43/117447012_520c965c5f_m.jpg)
![](http://static.flickr.com/52/117446929_2f03de005a_m.jpg)
![](http://static.flickr.com/37/117446823_78fa0508ed_m.jpg)
![](http://static.flickr.com/46/117446726_6fac6bc26e_m.jpg)
![](http://static.flickr.com/54/117446624_8a9f28c59a_m.jpg)
![](http://static.flickr.com/52/117446518_a383d14693_m.jpg)
![](http://static.flickr.com/45/117446371_7100e76537_m.jpg)
![](http://static.flickr.com/53/117446213_38c8629fec_m.jpg)
![](http://static.flickr.com/38/117446065_7df62100b4_m.jpg)
![](http://static.flickr.com/36/117445990_74316bbcb2_m.jpg)
![](http://static.flickr.com/43/117445909_51a2a0f875_m.jpg)