Lajt

Lajt, often spelled "light" in English, is a broad term encompassing electromagnetic radiation within a certain portion of the electromagnetic spectrum. This visible spectrum is what allows humans and many other organisms to perceive their surroundings. The wavelength of light determines its color, with shorter wavelengths appearing as violet and blue, and longer wavelengths appearing as orange and red. The combination of all visible wavelengths produces white light.

Light travels at a constant speed in a vacuum, approximately 299,792,458 meters per second. This speed is a fundamental constant in physics. When light passes through different mediums, such as water or glass, its speed changes, and it can bend, a phenomenon known as refraction. The interaction of light with matter can also result in reflection, absorption, or scattering.

Beyond its role in vision, light is a crucial source of energy for life on Earth, powering photosynthesis in plants. It is also fundamental to many scientific and technological applications, including optical instruments, lasers, and telecommunications. The study of light and its properties is known as optics, a major branch of physics. Understanding light is essential for comprehending phenomena ranging from the colors of a rainbow to the functioning of stars.