天气预报 > 教育 > 显微镜如何正确放置标本
显微镜如何正确放置标本
更新时间: 2021-05-27 02:08:18  

1、把所要观察的玻片标本正面朝上放在载物台上,用压片夹压住。玻片标本要正对通光孔的中心。

2、转动粗准焦螺旋,使镜筒缓慢下降,直到物镜接近玻片标本为止(此时,眼睛一定要从侧面看着物镜)。

3、一只眼向目镜内看,同时逆时针方向转动粗准焦螺旋,是镜筒缓缓上升,直到看清物像为止。再略微转动细准焦螺旋,使看到的物像更加清晰。

关键词: 显微镜 如何 正确 放置 标本

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