What is the ratio of shadow to height?Height and shadow formula

What is the ratio of the height of the person to the shadow at noon:

Proportional, the higher the height, the longer the shadow, the same time is proportional, but the specific proportion depends on the angle of the sun, just like the length of the shadow changes from time to time under a street lamp.

When there is sunlight, measure the length of the shadow of the tree

Then immediately measure the length of your figure

Divide your height by the length of your shadow and multiply it by the length of the tree's shadow to get the height of the tree.

Instead, it shouldn't be measuring the length of your own shadow, because it's almost impossible to do it if you're alone. Measure the shadow length of a stick.

The "ruler" on the person

Did you know?Each of us carries several rulers with us. If the length of your desk is 8 centimeters, and the length of your desk is 7 centimeters, you can see that the length of the desk is 56 centimeters.

If you take 65 centimeters of steps, when you go to school, you can count how many steps you have taken to figure out how far you have traveled from your home to school. Height is also a ruler. If you are 150 cm tall, then you hold a large tree with your hands together, and the length of the tree's circumference is about 150 cm.

Because each person has their arms stretched out, the length and height between the tips of their fingers are about the same. If you want to measure the height of a tree, shadows can help you too. All you have to do is measure the shadow of the tree and the length of your own shadow.

Because the height of the tree is the height of the tree shadow length and the height of the human figure is long. Why is that?You'll understand when you learn the proportions.

If you want to know how far away the mountain is from you, you can ask the voice to help you measure it. The sound can travel 331 meters per second, so you shout at the mountain, look at it for a few more seconds and you can hear the echo, multiply 331 by the time you hear the echo, and divide it by 2 to calculate it. Learning to use these rulers on your body will be very beneficial for you to calculate some problems.

At the same time, it will also provide convenience for you in your daily life. You've got to think about it!

Shadow direction finding. A stick is erected on the ground, and the shadows of the sticks move with the position of the sun, and these shadows are shortest at noon, and the line at the end of it is a straight line, and the vertical line of the line is north-south.

Draw a series of concentric circles on a 50-50 cm drawing sheet of paper.

The radius of the concentric circles is increased by 1 cm, nailed to the flat plate and fixed horizontally, and a thin steel needle or needle 12 to 15 cm long is inserted vertically into the center of the circle. When the position of the sun changes, the endpoints of the shadow will always intersect with concentric circles to plot these points, and then connect two points on the same circle in a straight line, and connect the points of these lines with the center of the circle, this line is the north-south direction line, and the direction of the top of the arc is north.

In the first period (when you walk from a distance to the streetlight), the shadow gets shorter and shorter as you get closer to the streetlight. As you move away from the streetlight directly underneath it, the farther you go, the longer the shadow becomes. It is possible to form a positive proportion.

Height, shadow length, or shadow length, height is okay. Because their ratio does not change.

Because at the same time, the same regiment refers to the same place, and the height of the object is directly proportional to the length of the shadow.

Let this tree be x meters long. [Proportional relationship or simplified.

Cavity matching. ：：4

x=6÷

1. Represents a numeric value, a specific numeric value.

2. Under the sun, the ratio of people's height to shadow length is different at different times.

3. The ratio of the actual height of different objects to the length of shadows is the same at the same time, in the same place. This rule is often used to measure the actual height of tall objects or objects that cannot be measured directly.

Answer: Height meters, shadow meters, the ratio of height to shadow is ,,, the simplified ratio is. Seek adoption.

According to the title: 6

Answer: The ratio of height to shadow is 5:6

Welcome to continue with the questions.

This is for you to understand the "Pythagorean theorem" and the proportional relationship.

If you actually measure it, you're done.

There is a shadow to prove that there is light, and light is a straight line, so the height, light, and shadow are combined into a triangle, and the sun rises in the east and sets in the west, so the time is different, and the angle at which the light shines down is different, so the height and shadow length will change. If it is a fixed light, such as an electric light in a dark room, then the ratio does not change because the angle of the light is fixed and the person does not move.

At the same time and in the same place, it can be approximated that the angle of the light rays is the same, then the ratio is equal. The same location is also a condition for judging the angle of light, so don't forget it.

This will definitely change from time to time. At the same time, at the same angle, in the same place, the height and length ratio of different people should be equal!!

It may be equal, and the specific length will also change.