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Double entry bookkeeping, Leonardo da Vinci, Luca Pacioli, and the Mariners astrolabe

Essay #18 History Of Inventions

Hello, welcome to today’s essay about double entry bookkeeping, Leonardo da Vinci, Luca Pacioli, and the Mariners astrolabe. I hope you enjoy it. Let’s get started.

Double entry bookkeeping

“Double-entry bookkeeping, in accounting, is a system of bookkeeping so named because every entry to an account requires a corresponding and opposite entry to a different account.” – Wikipedia Double entry bookkeeping is a system that protect you from theft. The goal is to have positive equity. It’s practically keeps everything balanced. Two entries must be made for every one transaction you make. Double entry bookkeeping is very helpful because it’s benefits increase your wealth and profit, and like I said before, it protects your precious money from theft. It helps a businessman increase their capital, if you increase your capital you can form large corporations. Double entry bookkeeping led to the stock market and super rich businessman.

Leonardo da Vinci

Leonardo da Vinci was the son of a rich government official and had surprisingly, 12 siblings. He received education in Latin, geometry, and math, all as a child. He apprenticed under a master painter at the age of 14, by his late 20s he began getting paid for painting. This is probably something you knew but didn’t know about Leonardo da Vinci, you probably knew that he was a naturally gifted child, but you probably didn’t know that he could not focus on one subject until the end, kind of like me, but don’t tell. Ha ha. Anyway, he paid very good attention to the details in things, and because of that he became a military engineer, so, he drew the designs of inventions. His most famous works were Mona Lisa 1506, and the last supper 1498. He was successful in his old life, meaning that he became very rich while he was still alive, even though he was already rich he became richer because of painting. And most painters in their lifetime don’t get very rich until after their, well, dead. Overall he was not the best inventor, he had a hard time finishing what he started, and he was mostly remembered for Mona Lisa and the last supper.

Extra: Leonardo da Vinci also created a robot, cool, I know.

Luca Pacioli

Luca Pacioli gained an interest in math at a very early age, he moved to Venice when he was 20, there he became a monk at the age 30. The Franciscan monks were wonders, he taught math and arithmetic at numerous universities. Then he returned to his hometown just before he turned 50. His most famous book is how to be a good businessman, it was a handbook, he also wrote about math. And he also wrote about chess with Leonardo da Vinci. He was invited to Milan in 1496 where he met Leonardo da Vinci. Leonardo da Vinci illustrated one of his books. Then he moved to Florence and taught geometry at a university in the 1500s. His books benefited by the invention of the printing press, they also benefited because he wrote clearly, not too complicated, technically speaking, you could understand what he was trying to tell you. He also invented the double entry bookkeeping, or at least he was credited for it. He did make mistakes, but they led to future discoveries. For example he didn’t think you could solve X3 equations, but you can. How do I know?Well, someone rose to the challenge 30 years later and solved the X3 equation. Anyway Luca Pacioli was a good man, and he also inspired Leonardo da Vinci.

The mariners astrolabe

The mariners astrolabe is a device used for sailing. Oh and I forgot to tell you guys that I have a little surprise for you. You know how we never talk about Portugal much, well the mariners astrolabe was invented in Portugal, my great grandfather was from Portugal. Anyway back to the lesson. Yes, it was invented in Portugal, because the Portuguese were the first to really be interested in traveling at sea, so they became the largest navy ever. At that time. The mariners astrolabe would calculate the distance in between the horizon line and the star you were looking at. The mariners astrolabe, Unlike the normal astrolabe had slots cut out in the middle of it. You’re probably asking why, the answer is, so the wind didn’t catch it when you were calculating something. Nowadays we use different technology to do what the astrolabe did, but hopefully we will always remember the mariners astrolabe.

My favorite subject from this weeks studies was most likely the mariners astrolabe. I like the mariners astrolabe because it’s a little bit like an evolved version of the normal astrolabe.

Thank you for reading this essay about double entry bookkeeping, Leonardo da Vinci, Luca Pacioli, and the Mariners astrolabe. Would you like to share with me what you learned about this week? Have a nice day and bye for now.


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