fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 1 个月前I c it!mander.xyzimagemessage-square59fedilinkarrow-up1982arrow-down110
arrow-up1972arrow-down1imageI c it!mander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 1 个月前message-square59fedilink
minus-squaremEEGal@lemmy.worldlinkfedilinkEnglisharrow-up23·1 个月前You can actually use this, or more generally the shadow of a tree on any sunny day to calculate the distance to the sun ! (Can’t seem to find the video demonstrating it, but I have a feeling it’s from Physics Girl or Up And Atom on youtube)
minus-squareWolf314159@startrek.websitelinkfedilinkEnglisharrow-up10·1 个月前The ratio of the size of the image to the distance from the pinhole is the same as the ratio of the size of the sun to the distance to the sun.
minus-squareQuibblekrust@thelemmy.clublinkfedilinkEnglisharrow-up5·1 个月前Only if you know the sun’s size, which kind of presupposes you know its distance.
minus-squaremEEGal@lemmy.worldlinkfedilinkEnglisharrow-up1·1 个月前Strictly speaking, it’s not required, but I get your point. In any case, you can evaluate the relative sizes, which is cool enough ! (⚠️ nerd alert ⚠️)
minus-squaremEEGal@lemmy.worldlinkfedilinkEnglisharrow-up4·1 个月前My gut says Thales’ thorem, but this needs checking. That’s why I was looking for the video
You can actually use this, or more generally the shadow of a tree on any sunny day to calculate the distance to the sun !
(Can’t seem to find the video demonstrating it, but I have a feeling it’s from Physics Girl or Up And Atom on youtube)
The ratio of the size of the image to the distance from the pinhole is the same as the ratio of the size of the sun to the distance to the sun.
Only if you know the sun’s size, which kind of presupposes you know its distance.
Strictly speaking, it’s not required, but I get your point.
In any case, you can evaluate the relative sizes, which is cool enough ! (⚠️ nerd alert ⚠️)
how?
My gut says Thales’ thorem, but this needs checking.
That’s why I was looking for the video
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