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Complex systems of dactylonomy were used in the ancient world. The Greco-Roman author Plutarch, in his Lives, mentions finger counting as being used in Persia in the first centuries CE, so the practice may have originated in Iran. It was later used widely in medieval Islamic lands.
To understand, we need to go back 3000 years. Babylonians also used their hands to count, but wanting to count higher than 10, they devised a different system. They used their thumb to count the three segments of their four fingers to get 12. They marked that 12 by raising a finger on the other hand.
Fingers on each hand are given an identifying number. Starting with the right thumb, fingers on the right hand are numbered from one to 5. On the left hand, starting from the thumb, they are numbered 6 to 10. For example, the right ring finger is number 4 and the left middle finger is number 8.
Index finger | |
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Left human hand with index finger extended | |
Details | |
Artery | Radial artery of index finger, proper palmar digital arteries, dorsal digital arteries |
https://www.youtube.com/watch?v=_f9aS2wqUTk
Babylonian math has roots in the numeric system started by the Sumerians, a culture that began about 4000 BCE in Mesopotamia, or southern Iraq, according to USA Today. … When the two groups traded together, they evolved a system based on 60 so both could understand it.” That’s because five multiplied by 12 equals 60.
It depends, most of the time in English we say ten fingers, and ten toes… only if people want to get really specific do they say 8 fingers and 2 thumbs…. If you want to get really specific, you could say that we have 6 fingers, 2 thumbs, and 2 pinkies.
The little finger, often called the pinky in American English and pinkie in Scottish English (from the Dutch word pink, meaning little finger), is the most ulnar and usually smallest finger of the human hand, opposite the thumb, next to the ring finger.
The thumb represents the brain, the index finger represents the liver/gall bladder. The middle finger represents heart, the ring finger represents hormones and the little finger or pinky represents digestion.
Middle finger | |
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FMA | 24947 |
Anatomical terminology |
A single line, or “I,” referred to one unit or finger; the “V” represented five fingers, specifically, the V-shape made by the thumb and forefinger. “X” equaled two hands. (See how an X could be two Vs touching at their points?) Larger Roman numerals developed from other symbols.
Dyscalculia is a condition that makes it hard to do math and tasks that involve math. It’s not as well known or as understood as dyslexia . But some experts believe it’s just as common. That means an estimated 5 to 10 percent of people might have dyscalculia.
https://www.youtube.com/watch?v=t6esBCFhtH4
https://www.youtube.com/watch?v=wQNpXSmHE74
60 is a highly composite number. Because it is the sum of its unitary divisors (excluding itself), it is a unitary perfect number, and it is an abundant number with an abundance of 48. Being ten times a perfect number, it is a semiperfect number. … It is the smallest number that is the sum of two odd primes in six ways.
THE DIVISION of the hour into 60 minutes and of the minute into 60 seconds comes from the Babylonians who used a sexagesimal (counting in 60s) system for mathematics and astronomy. They derived their number system from the Sumerians who were using it as early as 3500 BC.
With their enthusiasm for the number 60, the Babylonians divided the arc of the circle made by each triangle, into 60 parts, so six x 60 = 360 parts made up the full circle. The angle at the centre that produced an arc length 1/360th of the circumference of the circle is called one degree.
But in Japan “pinky up” doesn’t mean “fancy,” it means “women,” usually referring to someone’s girlfriend/mistress/love of their love that they just met five minutes ago. … You discreetly ask another coworker what’s up with him, and instead of outright telling you, she just holds up her pinky finger.
Index comes from the Latin indicō, which means “to point out,” which is also where the term “pointer” comes into play. Although it is the second digit (after the thumb), the index is recognized as the first finger, which explains why “forefinger” is also sometimes used.
That’s why in Japanese Sign Language, the middle finger would logically refer to “brother.” There’s a long cultural context. In this video, you can hear the woman saying “ani” (兄), which means “older brother.”
The three bones in each finger are named according to their relationship to the palm of the hand. The first bone, closest to the palm, is the proximal phalange; the second bone is the middle phalange; and the smallest and farthest from the hand is the distal phalange.