3 Prep Unit 2 Mirrors part 1

hello everyone hello everybody hello my students how are you today we will speak about unit 2 the name of this unit is light energy and this unit is divided into two main lessons the first lesson is mirrors and the second lesson is lenses so we can say that this your name is mirrors and lenses we will begin with mirrors but before speaking about anything we should answer some questions why you can see an image of your face when you look at still water surface and why you can notice the images of high buildings that are constructing me still world on the still water surface or why you see your image when you look at shining small surface like mirrors and when you look at non shining surface like closes or lungs must surface like wood you can't see your image will turn the light off and will return on 5 seconds pause the video and try to find solution of this question then come again if your answer saying that all this happens as result of the reflection of light on the water surface or the mirror surface then your answer is excellent but what's reflection means exactly reflection means the bouncing of light when it hits something yeah light bounces when it strikes reflection surface it bounces typically like ball consider that the ball is light ray what happens to the ball when it hits wall yeah it bounces away from the wall the same thing happens to light will light hit reflection surface it bounces away from at exactly like the ball come with me to an explanation video to understand how light reflects consider this ray of light which strikes mirror this ray of light is called the incident ray which is the incident ray strikes the mirror is called the point of incidence draw line perpendicular to the mirror through the point of incidence this line is called normal the angle which is incident remix with the normal is called the angle of incidence when the incident ray strikes the mirror it will balance off the mirror the Ray which bounces off is called the reflected ray the angle which is reflected where image with normal is called angle of reflection is there any laws at lesson of course we have some laws because it is science we have two laws of reflection the first law says angle of incidence equal angle of reflection the second law says the incident ray the reflected ray and the normal line all on the same plane the second property is that the image is laterally inverted it means that your right hand will be the energy left hand and your left hand will be the mg right the surly property is at image equal to the object the fourth property is it's an image is virtual cannot be received on story the first property is added essence of the object to the mirror equal to the distance of the image to the mirror we arrived to the final part of the video with Constance hello my name is mr. robot and gonna list the concepts in mr. Abdulrahman told you about the first concepts is light reflection phenomenon the bouncing of the incident light ray in the same medium when it strikes reflecting surface the second concept is the incident ray it is the light ray that falls on the reflecting surface the third concept is the reflected ray it is the light ray that bounces from the reflecting surface and the fourth concept is angle of incidence the angle between the incident ray and the normal line the fifth concept is angle of reflection the angle between the reflected ray and the normal line