The EM spectrum is used in the treatment of cancers by killing malignant cells, gamma rays and X-rays are used for this purpose. Similarly, X-rays are used in the analysis and diagnosis of patients by medical imaging called radiology.
The radio frequency portion of the electromagnetic spectrum uses radio telescopes.
what does an electromagnetic spectrum consist of
The entire electromagnetic spectrum frequencies, from the lowest to the highest frequencies, are collectively called the electromagnetic spectrum.
Visible light
Gateway
The table of electromagnetic spectrum helps in understanding different forms of electromagnetic radiation by organizing them based on their wavelengths and frequencies. It shows the range of electromagnetic waves, from radio waves to gamma rays, and helps in studying their properties and applications in various fields like communication, medicine, and astronomy.
The visible spectrum is a tiny, almost negligible slice of the electromagnetic spectrum. 'Sonar' has no place in this discussion. It's not even electromagnetic.
The electromagnetic spectrum includes electromagnetic waves with a continuous flow of the wavelength.
The electromagnetic spectrum spans from the lowly radio signals (1x104 Hz) that we use for terrestrial broadcasting to gamma rays (1x1021 Hz) from the sun! ===================
Radio waves have the longest wavelength in the electromagnetic spectrum.
Radio waves have the lowest energy in the electromagnetic spectrum.
Visible light is a small section in the electromagnetic spectrum.