The length of the shadow and the change of the time record table

The length of the shadow and the time change record table was used to observe and record the length of the shadow of an object at different times. The specific record sheet could be different according to different experiments or observations. The length and time of the shadow were affected by many factors, including the sun's altitude, the sun's orientation, the shape and size of the object, and the position of the light source. We have no way of knowing the exact length of the shadow and the contents of the time change log.

We can find a record of the length of the shadow and the change in time. To be more specific, documents [2] and [8] provided records of the length of the bamboo pole's shadow and the changes in time. However, due to the incomplete document content in the search results, we were unable to obtain a complete record of the shadow length and time changes. Therefore, he could not provide an accurate answer.

We can find information about the record of the changes in the length of the shadow. To be more specific, documents [3] and [9] provided records of the length of the bamboo pole's shadow and the changes in time. However, due to the incomplete document content in the search results, we were unable to obtain a complete record of the changes in the length of the shadow. Therefore, I am unable to provide an accurate answer.

The length of the shadow and the change in time were determined by the position of the sun and the angle of the light. During the day, the length of the shadow would change according to the height of the sun and the angle of the light. In the early morning and dusk, the sun was lower, the light was more slanted, and the shadow was longer. At noon, the sun was the highest, the light was the most direct, and the shadow was the shortest. At dusk, the sun was close to the horizon, the light was more slanted, and the shadow was longer. In addition to the height of the sun and the angle of the light, the length of the shadow was also affected by the height and shape of the object. Tall objects usually produce longer shadows, while objects with complex shapes may produce multiple parts of the shadow. The law of shadow length change was not only a natural phenomenon, but also had practical application value. In ancient times, people used the length of the sun's shadow to measure time and direction. By observing the changes in the shadow, they could infer the approximate time and direction to help people determine their position and direction. In short, the length of the shadow would change with the height of the sun and the angle of the light.

The length of the shadow was related to the time. When the sun rose in the morning and evening, the shadow was the longest, because the angle between the sun and the object was close to a straight angle. At noon, the shadow was the shortest, because the sun shone at the highest position at a right angle to the object being illuminated, and the shadow was distributed in a circle under the feet of the object. In addition, the length of the shadow also depended on the shape and size of the object, as well as the position of the light source. When the light source was further away from the object, the angle of the light was smaller, so the shadow was longer. When the light source was closer, the angle of the light was larger, and the shadow became shorter. The specific length of the shadow and the change in time could be observed and analyzed by measuring and recording.

The length of the shadow changed from long to short and then longer. In a day, the shadow was longer in the morning, the shadow was the shortest as it approached noon, and the shadow became longer at night. This was because the sun's elevation angle was changing, and the angle between the direction of the sun's light and the ground was also changing. When the sun just rose, the shadow of an object was the longest and was on the west side of the object. As the sun rose, the shadow would become shorter and shorter, and gradually move to the northwest. At noon, the shadow was the shortest, facing the north. Then, the sun set in the west, and the shadow became longer and longer, facing the east. This change was caused by the rotation of the Earth and the change in the position of the Sun.

We can get the results of the shadow change log for a day. According to document [1], the length of an object's shadow was related to the sun's elevation angle. When the sun's elevation angle was low, the shadow was longer; when the sun's elevation angle was high, the shadow was shorter. According to the document [2], the length of the shadow in a day changed as follows: the shadow was longer in the morning, the shadow was the shortest when it gradually approached noon, and the shadow gradually became longer at night. According to the document [3], the length of the shadow changes with the position of the sun in the sky. When the sun is at its highest position (noon), the shadow is the shortest, and when the sun is at its lowest position (early morning and evening), the shadow is the longest. According to the document [4], a pole stood in the sun, and its shadow recorded its length and direction every half an hour throughout the day. In the morning, the shadow faced west, in the afternoon, the shadow faced east, and in the afternoon, the shadow faced north. Combining this information, we can get the result of the shadow change record table: the shadow is longer in the morning, the shadow is the shortest when it gradually approaches noon, the shadow gradually becomes longer in the afternoon, and the shadow gradually becomes longer at night.

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The length of the shadow changed with the time of day and the angle of the sun. In a day, the shadow was longer in the morning, the shadow was the shortest when it was approaching noon, and the shadow gradually became longer at night. The length of a shadow was in inverse proportion to the sun's altitude. The higher the sun's altitude, the shorter the shadow; the lower the sun's altitude, the longer the shadow. In addition, the length of the shadow was also affected by the distance between the object and the light source. As the distance between the object and the light source increased, the length of the shadow increased. As the distance between the object and the light source decreased, the length of the shadow decreased. Therefore, the length of the shadow was determined by the height of the sun and the distance between the object and the light source.

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