Interesting exhibits - polarized maze

Protagonist: "Hello everyone, I'm your little science superman." What is this thing in my hand? That's right, it's a maze. So let's ask a member of the audience to participate. Ask this beautiful little lady to try this maze. (The audience managed to get out of the right direction) Wow, she's so good. So do you find this labyrinth difficult to walk? Then we actually have a bigger maze in the science and technology museum, which is - (sound effect: gah) polarized maze. ”

Protagonist: "This maze also needs to go from the beginning to the end, but instead of using a pencil but using a metal ball, we use a strong magnet to suck the ball into this heavy maze until we enter the middle position to win, now, let's try it." (Demonstration polarized maze gameplay) The game was successful! Kids, have you noticed anything in the pipe? There are many black walls in the pipe, and it is impossible to determine whether the wall can pass without the ball touching it, some can pass and some cannot pass. The same is the wall, what is the difference between them? ”

Protagonist: "Actually, polarized mazes use the polarizer item." So what exactly is a polarizer? It is actually an optical element. We all know that light is illuminated from all directions, and light is also an electromagnetic wave, which means that light is vibrating and vibrating on different planes, and polarizers can also indicate that light is a shear wave. So what is a transverse wave?

Background: Using a throwing rope to explain the transverse wave: "A wave in which the vibration direction of the particle is perpendicular to the direction of the wave's propagation is called a shear wave, and since there is a shear wave, is there a longitudinal wave?" In fact, there is, this is left to everyone to find the answer."

Protagonist: "Then the role of the polarizer is that only light in the same direction as the polarizer can pass through." ”

Protagonist: "What is a polarizer?" It's easier said than understood, but if you look at the material in my hand, you can demonstrate it very well, it represents the polarizer; this wire represents light. Next, I would like to ask an audience member to show me that if we place two polarizers in parallel, we can only pass through light in the same direction as it; if we rotate one of the polarizers by 90 degrees, all the light cannot pass through at this time, and it becomes black. ”

Protagonist: "So some of the pipes in the polarization maze seem to be walls, but in fact, because the polarization direction of the two polarizers is perpendicular to each other, the light cannot be passed, so it forms a pipe that looks like a wall and can actually be passed by small balls." ”

Protagonist: "Do you understand?" The world is very different with a light turn, and science is such a magicing! ”

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Exhibit Principle: What is a Polarizer? It is actually an optical element. We all know that light is illuminated from all directions, and light is also an electromagnetic wave, which means that light is vibrating and vibrating on different planes, and polarizers can also indicate that light is a shear wave. So what is a transverse wave? A wave whose vibrational direction of a particle is perpendicular to the direction in which the wave propagates is called a shear wave.

If we place two polarizers in parallel, we can only pass through light in the same direction as it; if we rotate one of the polarizers by 90 degrees, all the light cannot pass through at this time, and it becomes black.