The Missing Scientist-Electromagnetic Horizon II

Why is an electrical exhibition held in a park focused on earthquakes and geology? The main reason is the high-voltage power tower at the entrance. Historically, the public has viewed high-voltage power towers as extremely dangerous due to not only high-voltage electricity but also the intimidating levels of electromagnetic waves. This has caused many visitors to feel afraid and reluctant to enter the park upon seeing the high-voltage towers. But are the electromagnetic waves from these towers really that dangerous?

This exhibition focuses on electricity and electromagnetic waves, explaining household electricity and electromagnetic waves. It features 85 electromagnetic wave monitoring stations that measure and visually display the electromagnetic waves of operational ultra-high voltage power towers within the park. This allows visitors to see the intensity of electromagnetic waves for themselves. Additionally, the exhibition includes many interactive exhibits both indoors and outdoors, enabling visitors to learn about electricity, electromagnetism, and energy science through play. “Electromagnetic Vision 2.0: The Vanishing Scientist” opened to the public on January 1, 2023. This exhibition emphasizes the popular science communication of electricity and magnetism, building on the previous version with a design inspired by mysterious electromagnetic fields and atomic imagery.

**What are Electromagnetic Waves?**

Electromagnetic waves are variations in electromagnetic fields that propagate in the form of waves. The energy from these variations spreads as waves.

Electromagnetic waves are everywhere, including visible light, Wi-Fi, radio waves, microwaves, infrared, ultraviolet, and X-rays.

**Magnetic Levitation Display**

**Transmission Network Model**

This area features a LEGO model simulating the transmission network in central Taiwan, showcasing transmission equipment and its applications similar to those in our daily lives.

**Power Generation Laboratory**

The invention of the generator significantly changed human life, making electricity an indispensable energy source. This area demonstrates the principles of generator operation and provides interactive experiences for families.

**Current Wars**

Depending on the design of the generator, electricity can be either direct current (DC) or alternating current (AC). The promoters of these two types of electricity were Edison and Tesla, who had many stories between them. This area uses interactive projection equipment to describe the development of electrical current and the stories of these scientists.

**Polarization of Light**

The polarization of light is an intriguing optical property. Electromagnetic waves can have various directions of oscillation. If the oscillation direction remains unchanged, it is called "linear polarization"; if it rotates and traces out a circle or ellipse over time, it is called "circular polarization" or "elliptical polarization."

When sunlight hits the surface of glass or water, the arrangement of medium molecules causes some directions of polarized light to penetrate and refract more easily, while others are more likely to be reflected. This results in polarized light with varying intensities in different directions from what was initially uniform sunlight.

**Home Appliance Exploration Room**

All electrically powered devices emit electromagnetic waves. Are these waves safe or dangerous? This area allows visitors to measure the electromagnetic waves emitted by common household appliances themselves.

**Why Does Blue Light Affect Circadian Rhythms?**

In nature, blue light from the sun helps keep people awake, improves focus, and boosts mood. Reduced blue light at night helps the body produce melatonin and induce sleepiness.

With the advent of electronic products, blue light from screens is present around the clock in our lives. Using electronic devices before bedtime, which exposes us to excessive blue light, can reduce melatonin secretion, affecting sleep and the health of our visual system.