Radio waves have the longest wavelengths in the electromagnetic spectrum, ranging from a few millimeters to several kilometers.

Visible light is the primary type of electromagnetic radiation emitted by the Sun and is responsible for the energy we receive from it.

Microwave radiation is widely used for communication purposes, including radio and television broadcasting, due to its ability to penetrate obstacles and transmit information over long distances.

Infrared radiation is emitted by hot objects and is often used in applications such as thermal imaging and remote sensing to detect heat and temperature variations.

Visible light is the region of the electromagnetic spectrum that is responsible for the colors we see. It consists of wavelengths that range from approximately 400 nanometers (violet) to 700 nanometers (red).

Gamma rays are emitted by radioactive materials and are used in medical imaging techniques such as gamma scans and in cancer treatment through radiotherapy.

Infrared radiation is widely used in astronomy to study the chemical composition of celestial objects, as it allows astronomers to detect the presence of specific molecules and elements based on their characteristic infrared signatures.

Ultraviolet radiation is emitted by stars and is used by astronomers to determine their temperature and surface properties, as well as to study stellar activity and evolution.

Radio waves are used extensively in astronomy to study the structure and dynamics of galaxies, as they allow astronomers to probe the distribution and motion of gas, dust, and stars within galaxies.

The cosmic microwave background (CMB) is a remnant of the early universe and is primarily composed of microwave radiation. Studying the CMB provides valuable insights into the conditions and properties of the universe shortly after the Big Bang.

Radio waves are used to study the properties of interstellar gas and dust, as they can penetrate these regions and provide information about their density, temperature, and composition.

Black holes emit X-rays, which are used by astronomers to study their properties and behavior. X-ray observations provide insights into the accretion processes around black holes and help in understanding their mass, spin, and other characteristics.

Infrared radiation is used to study the formation and evolution of stars, as it allows astronomers to observe regions of star formation and to detect the presence of young stars and protoplanetary disks.

Pulsars emit radio waves, which are used by astronomers to study their rotation and magnetic field properties. Radio observations of pulsars provide insights into their timing behavior, emission mechanisms, and the physics of neutron stars.

Infrared radiation is used to study the properties of planets and moons in our solar system, as it allows astronomers to determine their surface temperatures, composition, and geological features.