A black moor swims around in a fish bowl discovering a road sign every half lap, indicating a curve ahead.
Given that goldfish are alleged to have very bad short-term memories, perhaps their bowls or tanks should be equipped with road signs as reminders of the environment ahead. To save a fish from going too fast and grinding against the side of the bowl because it was ill-informed of the bowl curvature (even though it has seen it hundreds of times before), small signs could be installed to indicate a curve over a given distance.
I’ve given an illustrated example above for a fish in a bowl. The sign in this one may be a little small to read, but it implies there is a curve to the right for the next 0.00044 km. I have based this figure on a fish bowl of radius of 14cm. Hopefully my calculations are correct.
There are a few assumptions here for this illustration to work:
- The fish is in a circular bowl of radius 14cm.
- The fish is not visually impaired.
- The fish can read.
- The fish can interpret the sign’s meaning, understand and apply the knowledge.
- The fish swims only in a continual circle in a clockwise direction (for this sign, but other signs may allow for the opposite direction).
- The fish’s memory of the previous sign has gone before it travels 44cm around the edge of the bowl.
- The fish doesn’t become giddy and nauseous.
I’d never tried to draw refraction before, so this was new territory for me. Alas, I didn’t have a fish bowl to go by, so I used a glass of water with an icy-pole stick and extrapolated. I think it turned out ok.
I had completed this one and uploaded it to its destination where, after viewing it a few times, I realised I had drawn the scales on the fish back to front. Poor moor (and grrrrr). I had to do some editing to turn them around and then re-upload. It may be a bit hard to see the scales in the image at this size, but they are quite noticeable in the larger print version.