扫二维码下载作业帮
2亿+学生的选择
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扫二维码下载作业帮
2亿+学生的选择
奇妙的反射现象这个实验要准备两面镜子,你也可以在家里的大镜子面前完成.1、把两面镜子面对面平行放置,在两面镜子中间放一个小玩具,镜子中会出现多少个玩具的影像?2、背对家里的大镜子站立,然后拿一块小镜子对着自己的脸,你能看到多少个你面部的影响?
扫二维码下载作业帮
2亿+学生的选择
1、镜子中会出现3个玩具的影像.2、你能看到无数个你面部的影像.下一个是“影像”,你打成了“影响”,打错了,注意改正.
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扫描下载二维码扫二维码下载作业帮
2亿+学生的选择
下载作业帮安装包
扫二维码下载作业帮
2亿+学生的选择
把两面镜子面对面平行放置,在两面镜子中间放一个小玩具,镜面中会出现多少个玩具的影象?十万火急!背对着家里的大镜子站立，然后拿一块小镜子对着自己的脸，会看到多少个面部的影像？？？？？？
扫二维码下载作业帮
2亿+学生的选择
n多,无限延伸下去,直到你看不见为止.一个啦,后面的大镜子被你的脑袋挡住了啦.
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别多想了，答案是两个。两面镜子是平行的，所以镜中成的像是垂直的，所以一个镜子里只会有一个像。
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{if !!photo.labels && photo.labels.length>0}
{var wrapwidth = photo.ow < 500?photo.ow:500}
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{if lbtxtwidth>12}
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{list photos as photo}
{if photo_index==0}{break}{/if}
品牌${make||'-'}
型号${model||'-'}
焦距${focalLength||'-'}
光圈${apertureValue||'-'}
快门速度${exposureTime||'-'}
ISO${isoSpeedRatings||'-'}
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镜头${lens||'-'}
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this.p={ dwrMethod:'queryLikePosts',fpost:'2e6216_f29badc',userId:,blogListLength:30};不见天日的喜欢 | LOFTER（乐乎） - 让兴趣，更有趣
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不见天日 的喜欢
&nbsp&nbsp被喜欢
&nbsp&nbsp被喜欢
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{var wrapwidth = photo.ow < 500?photo.ow:500}
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{var lbtxtwidth = Math.floor(wrapwidth*(labs.ort==1?labs.x:(100-labs.x))/100)-62}
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{list photos as photo}
{if photo_index==0}{break}{/if}
品牌${make||'-'}
型号${model||'-'}
焦距${focalLength||'-'}
光圈${apertureValue||'-'}
快门速度${exposureTime||'-'}
ISO${isoSpeedRatings||'-'}
曝光补偿${exposureBiasValue||'-'}
镜头${lens||'-'}
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this.p={ dwrMethod:'queryLikePosts',fpost:'1ddf0b60_b2584ce',userId:,blogListLength:30};洛书96的喜欢 | LOFTER（乐乎） - 让兴趣，更有趣
LOFTER for ipad —— 让兴趣，更有趣
洛书96 的喜欢
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{var wrapwidth = photo.ow < 500?photo.ow:500}
{list photo.labels as labs}
{var lbtxtwidth = Math.floor(wrapwidth*(labs.ort==1?labs.x:(100-labs.x))/100)-62}
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{list photos as photo}
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品牌${make||'-'}
型号${model||'-'}
焦距${focalLength||'-'}
光圈${apertureValue||'-'}
快门速度${exposureTime||'-'}
ISO${isoSpeedRatings||'-'}
曝光补偿${exposureBiasValue||'-'}
镜头${lens||'-'}
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this.p={ dwrMethod:'queryLikePosts',fpost:'1dfdd6b1_ad7e0a2',userId:,blogListLength:16};}