8 Comments
Jan 11Liked by Heather Wall

Heather, I cannot remember when or how I found your newsletter. Every time you pop up in my inbox, you absolutely make my day. These little facts are fascinating!

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So glad you enjoy -- thank you!

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Interesting. Once I thought about it, I “focused “ on the fact that the image is formed by the lens, not the pupil. You could ponder on why there are no square pupils (or are there?). I predict that there is money to be made by opthalmogists who can promise star-shaped pupils. I mean, how hard can it be?

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inneresterating / i was just about to write about cats / maybe start off in ancient egypt when they were gods and then move into the present day backyard where they are forming their own tribe / never thought about the vertical pupil part

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Cats embody their godliness -- you have to admire them for that! I hope you write this piece!

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got it https://rohn.substack.com/p/cats

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Jan 13Liked by Heather Wall

Very informative! I had no idea of the shape/functionality relations across so many species. Glad to be subscribed

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Nice! I left a comment

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