The function of plane mirror imaging scale

The function of the flat mirror imaging scale is to determine the position of the image, compare the size of the image and the object, determine the connection between the image and the object and the vertical relationship of the mirror, verify whether the connection between the image and the object is perpendicular to the mirror, and determine the symmetry between the object and the image. The detailed explanation is as follows:

1. Determine the position of the image and compare the size of the image and the object: In the plane mirror imaging experiment, the position of the image is unknown and needs to be measured accurately with a scale. By measuring the distance between the image and the plane mirror, the position of the image can be determined. Another important function of scale is to measure the size of image and object and compare whether they are equal.

2. Determine the vertical relationship between the straight line between the image and the object and the mirror: In the experiment, we need to ensure that the image and the object are symmetrical about the mirror, that is, the straight line between the image and the object needs to be perpendicular to the mirror. The ruler can be used to measure the distance between the image and the mirror, thus verifying this relationship.

3. Verify whether the line between the image and the object is perpendicular to the mirror, and determine the symmetry of the object and the image: In order to verify whether the image and the object are symmetrical about the mirror, we need to measure the distance between the image and the object and the mirror to verify whether they are equal. Scale plays a key role in this process. Measure the distance between the object and the image and the plane mirror with a scale.

Related knowledge of plane mirror

1. reflection principle: when light strikes a plane mirror, it will be reflected back to form reflected light. The direction of the reflected light is opposite to the direction of the incident light and parallel to the incident light. The included angle between the reflected light and the incident light is the reflection angle, and the size of the reflection angle is equal to the size of the incident angle.

2. Formation of virtual image: When the light is reflected by the plane mirror, we will see the virtual image of the object on the other side of the plane mirror. The virtual image is formed by light reflection, not the actual object. The virtual image and the object are symmetrical with respect to the plane mirror, and their connecting lines are perpendicular to the mirror.

3. Application of flat mirrors: Flat mirrors are widely used in daily life, such as mirrors at home, reflectors in photography and reflectors on the road. It can also be used in optical instruments, such as telescopes and microscopes, to focus or change the direction of light.