Who invented copper pot dripping? (urgent)

Time is precious to everyone, especially in ancient times, because most people are mainly farmers, who work at sunrise and rest at sunset. How to master time is a big problem for these people. Therefore, in the Western Han Dynasty, someone has invented a timing instrument called "Copper Pot Drip", which is also the earliest timer found at present. When did the copper pot drip? The bronze pot of the Western Han Dynasty is cylindrical, with a leak near the bottom, and a small hole on the lid with a wooden arrow engraved with degrees. When the kettle water flows out from the leaking spout, the wooden arrow will drop to indicate the time at that time. In the Yuan Dynasty, the "copper pot dripping water" was improved and evolved into a stepped leaky pot. The pot is divided into four layers, which gradually decreases from top to bottom. Water drips from the top to the bottom of the pot in turn, and the time is counted from the scale of the floating arrow.

Time is precious to everyone, especially in ancient times, because most people are mainly farmers, who work at sunrise and rest at sunset. How to master time is a big problem for these people. Therefore, in the Western Han Dynasty, someone has invented a timing instrument called "Copper Pot Drip", which is also the earliest timer found at present. When did the copper pot drip? The bronze pot of the Western Han Dynasty is cylindrical, with a leak near the bottom, and a small hole on the lid with a wooden arrow engraved with degrees. When the kettle water flows out from the leaking spout, the wooden arrow will drop to indicate the time at that time. In the Yuan Dynasty, the "copper pot dripping water" was improved and evolved into a stepped leaky pot. The pot is divided into four layers, which gradually decreases from top to bottom. Water drips from the top to the bottom of the pot in turn, and the time is counted from the scale of the floating arrow. Gauge and sundial: Both the gauge and the sundial are timing instruments with the sun as the observation target. They are the oldest astronomical instruments in China with simple structure. They have been created for a long time and cannot be tested. Now most people are talking about the standard watch developed from the watch, and the sundial is also evolved from the standard watch. The so-called watch is originally a pole or a stone pillar standing upright on the flat ground. Ancient people found the shadow of an object illuminated by the sun in their lives, and its direction and length changed regularly with the position of the sun. Gradually, some people thought of using bamboo poles or stone pillars as a special tool to observe shadow changes, which produced the oldest astronomical instrument-watches. Although the watch has a simple structure, it has many uses, such as determining the direction, solar terms, time and region according to the direction and length of the shadow. Later, many special instruments and observation methods were developed for each project. For example, a standard watch is an instrument to determine solar terms and age according to the change of shadow length at noon. The sundial is a special instrument, which uses the change of the direction of the surface shadow of a day to determine the time. A watch consists of a watch standing upright on the ground and a ruler (Gui) lying horizontally in the north-south direction. At the latest in the middle of the Spring and Autumn Period, it has been an important method to make calendars by measuring the shadow of the sun with standards. In this way, the length of the tropic year is 365.25 days. & lt& lt ghost logo >>& lt& lt sundial >> sundial originated from standard watches. Because the earth revolves around the sun, the length of the surface shadow changes at noon every day, which leads to the difference between solar terms and old age. Due to the rotation of the earth, the orientation and shadow length of the surface shadow also change regularly in one day. The sundial measures the time of day by using the azimuth change of the surface shadow. A sundial consists of a watch (called a dial hand) and a dial engraved with time. According to the different surface positions, sundials can be divided into horizontal sundials (the surface is placed horizontally, the pointer points to the North Pole, and the angle between the surface and the pointer is the local geographical latitude) and equatorial sundials (the pointer is parallel to the earth's rotation axis, and the surface is a sundial).

Time is precious to everyone, especially in ancient times, because most people are mainly farmers, who work at sunrise and rest at sunset. How to master time is a big problem for these people. Therefore, in the Western Han Dynasty, someone has invented a timing instrument called "Copper Pot Drip", which is also the earliest timer found at present. When did the copper pot drip? The bronze pot of the Western Han Dynasty is cylindrical, with a leak near the bottom, and a small hole on the lid with a wooden arrow engraved with degrees. When the kettle water flows out from the leaking spout, the wooden arrow will drop to indicate the time at that time. In the Yuan Dynasty, the "copper pot dripping water" was improved and evolved into a stepped leaky pot. The pot is divided into four layers, which gradually decreases from top to bottom. Water drips from the top to the bottom of the pot in turn, and the time is counted from the scale of the floating arrow. Gauge and sundial: Both the gauge and the sundial are timing instruments with the sun as the observation target. They are the oldest astronomical instruments in China with simple structure. They have been created for a long time and cannot be tested. Now most people are talking about the standard watch developed from the watch, and the sundial is also evolved from the standard watch. The so-called watch is originally a pole or a stone pillar standing upright on the flat ground. Ancient people found the shadow of an object illuminated by the sun in their lives, and its direction and length changed regularly with the position of the sun. Gradually, some people thought of using bamboo poles or stone pillars as a special tool to observe shadow changes, which produced the oldest astronomical instrument-watches. Although the watch has a simple structure, it has many uses, such as determining the direction, solar terms, time and region according to the direction and length of the shadow. Later, many special instruments and observation methods were developed for each project. For example, a standard watch is an instrument to determine solar terms and age according to the change of shadow length at noon. The sundial is a special instrument, which uses the change of the direction of the surface shadow of a day to determine the time. A watch consists of a watch standing upright on the ground and a ruler (Gui) lying horizontally in the north-south direction. At the latest in the middle of the Spring and Autumn Period, it has been an important method to make calendars by measuring the shadow of the sun with standards. In this way, the length of the tropic year is 365.25 days. & lt& lt ghost logo >>& lt& lt sundial >> sundial originated from standard watches. Because the earth revolves around the sun, the length of the surface shadow changes at noon every day, which leads to the difference between solar terms and old age. Due to the rotation of the earth, the orientation and shadow length of the surface shadow also change regularly in one day. The sundial measures the time of day by using the azimuth change of the surface shadow. A sundial consists of a watch (called a dial hand) and a dial engraved with time. According to the different surface positions, sundials can be divided into horizontal sundials (the surface is placed horizontally, the pointer points to the North Pole, and the angle between the surface and the pointer is the local geographical latitude) and equatorial sundials (the pointer is parallel to the earth's rotation axis, and the surface is a sundial).

Time is precious to everyone, especially in ancient times, because most people are mainly farmers, who work at sunrise and rest at sunset. How to master time is a big problem for these people. Therefore, in the Western Han Dynasty, someone has invented a timing instrument called "Copper Pot Drip", which is also the earliest timer found at present. When did the copper pot drip? The bronze pot of the Western Han Dynasty is cylindrical, with a leak near the bottom, and a small hole on the lid with a wooden arrow engraved with degrees. When the kettle water flows out from the leaking spout, the wooden arrow will drop to indicate the time at that time. In the Yuan Dynasty, the "copper pot dripping water" was improved and evolved into a stepped leaky pot. The pot is divided into four layers, which gradually decreases from top to bottom. Water drips from the top to the bottom of the pot in turn, and the time is counted from the scale of the floating arrow. Gauge and sundial: Both the gauge and the sundial are timing instruments with the sun as the observation target. They are the oldest astronomical instruments in China with simple structure. They have been created for a long time and cannot be tested. Now most people are talking about the standard watch developed from the watch, and the sundial is also evolved from the standard watch. The so-called watch is originally a pole or a stone pillar standing upright on the flat ground. Ancient people found the shadow of an object illuminated by the sun in their lives, and its direction and length changed regularly with the position of the sun. Gradually, some people thought of using bamboo poles or stone pillars as a special tool to observe shadow changes, which produced the oldest astronomical instrument-watches. Although the watch has a simple structure, it has many uses, such as determining the direction, solar terms, time and region according to the direction and length of the shadow. Later, many special instruments and observation methods were developed for each project. For example, a standard watch is an instrument to determine solar terms and age according to the change of shadow length at noon. The sundial is a special instrument, which uses the change of the direction of the surface shadow of a day to determine the time. A watch consists of a watch standing upright on the ground and a ruler (Gui) lying horizontally in the north-south direction. At the latest in the middle of the Spring and Autumn Period, it has been an important method to make calendars by measuring the shadow of the sun with standards. In this way, the length of the tropic year is 365.25 days. & lt& lt ghost logo >>& lt& lt sundial >> sundial originated from standard watches. Because the earth revolves around the sun, the length of the surface shadow changes at noon every day, which leads to the difference between solar terms and old age. Due to the rotation of the earth, the orientation and shadow length of the surface shadow also change regularly in one day. The sundial measures the time of day by using the azimuth change of the surface shadow. A sundial consists of a watch (called a dial hand) and a dial engraved with time. According to the different surface positions, sundials can be divided into horizontal sundials (the surface is placed horizontally, the pointer points to the North Pole, and the angle between the surface and the pointer is the local geographical latitude) and equatorial sundials (the pointer is parallel to the earth's rotation axis, and the surface is a sundial).