복사(Radiation)란 무엇인가

Perhaps one of the main disadvantages of LED light bulbs is their higher emission of blue light compared to incandescent bulbs, which tend to emit more red light. This increased blue light can disrupt your circadian rhythm, leading to difficulties falling asleep and a decrease in sleep quality.

In particular, the emission spectrum of LED lights, especially those with a blue peak, can potentially impact our health by inhibiting the production of melatonin. Melatonin is a hormone that our body naturally starts producing in the afternoon and reaches its highest levels during the nighttime hours.

Not only do LED holiday lights consume less electricity, but they also offer several advantages over incandescent lights. One of these advantages is their safety feature. LEDs are much cooler than incandescent lights, which significantly reduces the risk of combustion or burnt fingers. Additionally, LEDs are sturdier as they are made with epoxy lenses instead of glass, making them more resistant to breakage.

Radiation in light refers to the energy that originates from a source and propagates through space at the speed of light. This energy possesses both an electric field and a magnetic field, and exhibits wave-like characteristics. Another term for radiation is “electromagnetic waves”.

Radio waves, gamma-rays, visible light, and all the other components of the electromagnetic spectrum are classified as electromagnetic radiation. This form of radiation can be characterized as a collection of weightless particles known as photons, which move in a wave-like manner at the speed of light.

Electromagnetic radiation, including light, is produced through the movement (vibration) of electrically charged particles, such as the vibrating molecules in heated substances or the electrons within atoms. These processes are involved in the glowing filament of incandescent lamps, while fluorescent lamps rely on the latter process.

A light-emitting diode (LED) is a semiconductor device that emits optical radiation within a specific range of wavelengths when an electric current is applied. The emitted wavelengths of most LEDs typically span from infrared (around 1000 nanometers) to ultraviolet (approximately 300 nanometers).

When the natural radioactivity present in construction materials undergoes decay, it emits the radioactive gas radon. This emission of radon can potentially lead to increased levels of radon in residential and commercial buildings. It is important to note that indoor radon poses a greater and more prevalent public health concern compared to radiation originating from building materials.