Millimetriaaltosäteilyä

Millimetriaaltosäteilyä refers to electromagnetic radiation with wavelengths ranging from one millimeter to ten millimeters, corresponding to frequencies between 30 gigahertz and 300 gigahertz. This portion of the electromagnetic spectrum falls between microwaves and infrared radiation.

The properties of millimetriaaltosäteilyä make it useful in various applications. Its relatively short wavelengths allow for the development of compact antennas and high-resolution imaging systems. Unlike visible light, these waves can penetrate fog, smoke, and dust, making them valuable for certain remote sensing and surveillance tasks. However, they are significantly attenuated by atmospheric gases like oxygen and water vapor, which limits their range in open-air applications.

Applications of millimetriaaltosäteilyä include radar systems, particularly for short-range detection and imaging, such as in automotive radar for collision avoidance. It is also used in security scanners at airports and other checkpoints, where it can detect concealed objects without exposing individuals to ionizing radiation. Furthermore, millimeter waves play a role in radio astronomy, enabling scientists to study specific molecular transitions in interstellar space. Research is also ongoing for its use in high-speed wireless communication due to the large bandwidth available in this frequency range.