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    • https://phys.libretexts.org/Courses/Grossmont_College/ASTR_110%3A_Astronomy_(Fitzgerald)/03%3A_Radiation_and_Spectra/3.02%3A_The_Electromagnetic_Spectrum
      The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmos...The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmosphere and must be observed from space, whereas others—such as visible light, FM radio and TV—can penetrate to Earth’s surface. The emission of electromagnetic radiation is intimately connected to the temperature of the source.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Introduction_to_Astronomy_(Lumen)/04%3A_Light_and_Spectra/4.03%3A_The_Electromagnetic_Spectrum
      This page explains the Electromagnetic Spectrum (EMS), highlighting the range of frequencies of electromagnetic radiation that acts as both waves and particles. It details the visible light segment (4...This page explains the Electromagnetic Spectrum (EMS), highlighting the range of frequencies of electromagnetic radiation that acts as both waves and particles. It details the visible light segment (400 nm to 700 nm) and the various types of radiation, including Radio, Microwave, Infrared, Ultraviolet, X-rays, and Gamma Rays. It notes that only specific wavelengths penetrate Earth’s atmosphere and provides a mnemonic for remembering the order of the EMS.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Astronomy_2e_(OpenStax)/05%3A_Radiation_and_Spectra/5.03%3A_The_Electromagnetic_Spectrum
      The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmos...The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmosphere and must be observed from space, whereas others—such as visible light, FM radio and TV—can penetrate to Earth’s surface. The emission of electromagnetic radiation is intimately connected to the temperature of the source.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Introduction_to_Astronomy_(Lumen)/05%3A_Telescope_and_Observing/5.07%3A_Space-Based_Telescopes
      This page discusses the Hubble Space Telescope's capabilities for clear space observations and mentions the upcoming launch of the Webb Space Telescope by NASA in 2018. It also highlights the role of ...This page discusses the Hubble Space Telescope's capabilities for clear space observations and mentions the upcoming launch of the Webb Space Telescope by NASA in 2018. It also highlights the role of various planetary probes, orbiters, and rovers in studying celestial bodies, along with the focusing of some telescopes on specific wavelengths like Infrared, Ultraviolet, Gamma, and Cosmic rays.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Introduction_to_Astronomy_(Lumen)/15%3A_Cosmology/15.10%3A_What_is_Next_for_the_Big_Bang_Theory
      This page discusses the ongoing data collection from the Hubble Space Telescope until it stops functioning, while highlighting improvements in Earth-based telescope technology. It mentions the importa...This page discusses the ongoing data collection from the Hubble Space Telescope until it stops functioning, while highlighting improvements in Earth-based telescope technology. It mentions the importance of other satellites, particularly the James Webb Space Telescope, set to launch in 2018, which will focus on capturing data across different wavelengths like infrared and gamma-ray.
    • https://phys.libretexts.org/Courses/Kettering_University/Electricity_and_Magnetism_with_Applications_to_Amateur_Radio_and_Wireless_Technology/01%3A_Preliminary_Concepts/1.04%3A_Electromagnetic_Spectrum
      Electromagnetic fields exist at frequencies from 0 Hz to at least 10^{20} Hz – that’s at least 20 orders of magnitude! This section describes some of the characteristics of the electromagnetic spe...Electromagnetic fields exist at frequencies from 0 Hz to at least 10^{20} Hz – that’s at least 20 orders of magnitude! This section describes some of the characteristics of the electromagnetic spectrum, including some of the conventional names given to electromagnetic waves over certain ranges of frequency.
    • https://phys.libretexts.org/Courses/Prince_Georges_Community_College/Introduction_to_Astronomy_(2025)/01%3A_An_Introduction_to_Astronomy/1.05%3A_Radiation_and_Spectra/1.5.03%3A_The_Electromagnetic_Spectrum
      The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmos...The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmosphere and must be observed from space, whereas others—such as visible light, FM radio and TV—can penetrate to Earth’s surface. The emission of electromagnetic radiation is intimately connected to the temperature of the source.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Astronomy_1e_(OpenStax)/05%3A_Radiation_and_Spectra/5.02%3A_The_Electromagnetic_Spectrum
      The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmos...The electromagnetic spectrum consists of gamma rays, X-rays, ultraviolet radiation, visible light, infrared, and radio radiation. Many of these wavelengths cannot penetrate the layers of Earth’s atmosphere and must be observed from space, whereas others—such as visible light, FM radio and TV—can penetrate to Earth’s surface. The emission of electromagnetic radiation is intimately connected to the temperature of the source.
    • https://phys.libretexts.org/Bookshelves/Astronomy__Cosmology/Introduction_to_Astronomy_(Lumen)/05%3A_Telescope_and_Observing/5.04%3A_Telescope_Optical_Types
      This page discusses various types of telescopes categorized by their optical systems: refracting telescopes use lenses, reflecting telescopes utilize concave mirrors, and compound telescopes combine b...This page discusses various types of telescopes categorized by their optical systems: refracting telescopes use lenses, reflecting telescopes utilize concave mirrors, and compound telescopes combine both. It also highlights specialized telescopes for specific electromagnetic wavelengths. Additionally, binoculars are mentioned as compact refractors, while variations such as Newtonian reflectors are noted to show different designs and uses in reflecting telescopes.

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