fényhossza

Fényhossza is a Hungarian term that translates to "wavelength" in English. It refers to the spatial period of a periodic wave, which is the distance over which the wave's shape repeats. In simpler terms, it's the distance between two consecutive crests or troughs of a wave.

The wavelength is a fundamental property of waves, including light, sound, and water waves. It is inversely proportional to the wave's frequency and speed. The formula relating these quantities is: wavelength = speed / frequency. For electromagnetic waves, such as light, the speed is the speed of light (c). Therefore, the wavelength of light is given by λ = c / f, where λ is the wavelength and f is the frequency.

Different wavelengths of light are perceived by the human eye as different colors. For example, red light has a longer wavelength than blue light. The visible spectrum of light ranges from approximately 400 to 700 nanometers (nm). Beyond the visible spectrum, there are other forms of electromagnetic radiation, such as infrared radiation (longer wavelengths) and ultraviolet radiation (shorter wavelengths).

In acoustics, wavelength is related to the pitch of a sound. Higher-pitched sounds have shorter wavelengths, while lower-pitched sounds have longer wavelengths. The wavelength of sound is determined by its speed in a medium and its frequency. Understanding wavelength is crucial in various scientific and engineering fields, including optics, telecommunications, and seismology.