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[-] theroastedtoaster@lemmy.world 148 points 2 years ago

Fibonacci/Golden ratio = 1.618 Kilometres in 1 mile = 1.609

Conversion is off by less than 1%, not bad at all

[-] Evil_Shrubbery@lemm.ee 32 points 2 years ago

Yeah, it's nice an mysterious the first moment you hear about this but all the romance is gone once you think about how it works.

[-] kogasa@programming.dev 22 points 2 years ago

By far the most complicated part is the fact that the ratio of successive terms in the Fibonacci sequence approaches a specific number (which happens to be the golden ratio, which happens to be close to the ratio of km/mi).

[-] Anticorp@lemmy.world 8 points 2 years ago

Great, now I have two charts to memorize.

[-] Lux@lemmy.blahaj.zone 14 points 2 years ago

You only have to memorize how the fibbonaci sequence works, which is just addind the previous 2 numbers together to get the next

[-] Stretch2m@lemm.ee 4 points 2 years ago

But we only get one number to convert. We don't know what the previous number is in the sequence without a chart up to that number.

[-] Aqarius@lemmy.world 2 points 2 years ago

The starting numbers are 1 and 1.

[-] gandalf_der_12te@feddit.de 3 points 2 years ago

You only have to memorize ...

and have a lot of computing power available.

That algorithm ain't running itself.

[-] akariii@lemmy.blahaj.zone 4 points 2 years ago

you're welcome

[-] don@lemm.ee 45 points 2 years ago
[-] Deebster@lemmy.ml 29 points 2 years ago
[-] Carighan@lemmy.world 10 points 2 years ago

Here's the sound missing in that gif.

[-] HonoraryMancunian@lemmy.world 1 points 2 years ago

That was fun

[-] Ephera@lemmy.ml 1 points 2 years ago

That triangle solo, though.

[-] can@sh.itjust.works 9 points 2 years ago
[-] omgitsaheadcrab@sh.itjust.works 8 points 2 years ago
[-] can@sh.itjust.works 3 points 2 years ago
[-] casmael@lemm.ee 2 points 2 years ago

All I know is I can can the can can the only question is can a can can the can quick enough to can can the can can

[-] palordrolap@kbin.social 45 points 2 years ago

Fun fact: If you have a scientific calculator (literal or app) but no other conversion tool available, the conversion factor between miles and kilometres is almost exactly ln 5. Disturbingly close in fact.

That's fewer keypresses than generating the Golden ratio or working out Fibonacci numbers. But if all you have is your head then, yeah, the Fibonacci trick is good enough in a pinch.

[-] BreadOven@lemmy.world 8 points 2 years ago

Wow, that's pretty cool. Thanks.

[-] Spzi@lemm.ee 29 points 2 years ago

There are many such ways to memorize conversion ratios. Admittedly, this one is particularly cool, since you can construct it from the fairly trivial fibonacci series. But I still feel, it's no replacement for the actual solution; get rid of imperial and adopt metric.

[-] kryptonianCodeMonkey@lemmy.world 15 points 2 years ago

That's actually very useful.

this post was submitted on 19 Jan 2024
528 points (100.0% liked)

Math Memes

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