. . . )¹

You can "staple in" your Figures (sketches etc.) on separate pieces of paper if you don't know how to generate image files and incorporate them into L^ATEX documents.

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. . . observe?²

Note: looking stuff up on WikipediA does not constitute "observing". You are welcome to use such references to inform your own observations, but make sure to distinguish what you see from what the reference says you should see. Otherwise it's not real science!

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