Visible light
The biggest telescopes on Earth typically operate in the optical and infrared parts of the electromagnetic spectrum. These telescopes are used to study a wide range of celestial objects, from planets and stars to galaxies and quasars.
Radio telescopes gather data from radio sources and they target the radio frequency part of the electromagnetic spectrum.
Most of the light emitted by humans is in the infrared part of the electromagnetic spectrum.
The waves with higher frequencies have more energy and the gamma rays have the most energy in the electromagnetic spectrum
Radio waves have the lowest energy in the electromagnetic spectrum.
Pulsars are best observed in the radio part of the electromagnetic spectrum. This is because their strong radio emission allows them to be detected and studied using radio telescopes. However, pulsars have also been observed at other frequencies, including X-ray and gamma-ray wavelengths.
Gamma rays have the shortest wavelength in the electromagnetic spectrum.
The part of the electromagnetic spectrum that we can see is called visible light. It is the range of electromagnetic radiation that the human eye is sensitive to, with wavelengths between approximately 400 to 700 nanometers.
We call that the visible or optical spectrum.
the electromagnetic spectrum is reflected by different things like TVs and glass
An optical telescope focuses and concentrates visible light; radio telescopes focus and concentrate electromagnetic radiation (which means, "light") in the radio part of the spectrum.
I suppose you mean the visible spectrum, only a small part of the entire electromagnetic spectrum. The visible spectrum is basically all of the colors the human eye can detect.