Radio Waves
Usually optical energy.
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.
Optical light
Electromagnetic radiation in Optical and Infrared frequency.
No, not all electromagnetic radiation in the optical portion of the spectrum is visible to the human eye. The visible portion of the spectrum ranges from about 400 nanometers (violet) to 700 nanometers (red), but there are wavelengths outside of this range that can also be classified as part of the optical spectrum, such as ultraviolet and infrared light.
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrumcreate a magnified image for direct view, making a photograph, or collecting data through electronic image sensors.
well idk what this telescope does so do your HW and dont look it up!
The Hubble Space Telescope has a number of instruments, but the primary one is an optical telescope.
Both types of telescope collect and focus electromagnetic radiation for observational purposes, the difference is their band of observed frequencies. Radio telescopes are used for the radio frequencies ( ~3km - ~30cm) while optical telescopes are used for frequencies closer to visible light ( ~0.7μm - ~0.4μm). Optical telescopes may also be able to detect infrared and ultraviolet light.
Optical fiber communication primarily uses infrared light as the type of electromagnetic radiation. This is because infrared light has a longer wavelength that is well-suited for transmitting data over long distances through optical fibers with minimal signal loss.
There are telescopes used to detect radio waves and others to detect infrared radiation.
"Optical", in this case, simply means that they work with light.