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  2. Infrared sauna - Wikipedia

    en.wikipedia.org/wiki/Infrared_sauna

    An infrared sauna uses infrared heaters to emit infrared light experienced as radiant heat which is absorbed by the surface of the skin. Infrared saunas are popular in alternative therapies , where they are claimed to help with a number of medical issues including autism , cancer , and COVID-19 , but these claims are entirely pseudoscientific .

  3. Infrared heater - Wikipedia

    en.wikipedia.org/wiki/Infrared_heater

    Infrared heaters can be operated in vacuum or atmosphere. One classification of infrared heaters is by the wavelength bands of infrared emission. Short wave or near infrared for the range from 750 nm to 1.4 μm; these emitters are also named "bright" because still some visible light is emitted; Medium infrared for the range between 1.4 μm and ...

  4. Sauna - Wikipedia

    en.wikipedia.org/wiki/Sauna

    Single-sex saunas are rare, as well as those that impose nudity although the practice is growing and several spas have a towel-only policy on designated days. The most common types of saunas are the very hot and dry Finnish sauna (finn szauna), the steam room (gőzkabin), and the infrared sauna (infraszauna). In many larger spas, you can find a ...

  5. Infrared - Wikipedia

    en.wikipedia.org/wiki/Infrared

    In infrared photography, infrared filters are used to capture the near-infrared spectrum. Digital cameras often use infrared blockers. Cheaper digital cameras and camera phones have less effective filters and can view intense near-infrared, appearing as a bright purple-white color. This is especially pronounced when taking pictures of subjects ...

  6. Terahertz radiation - Wikipedia

    en.wikipedia.org/wiki/Terahertz_radiation

    Terahertz waves lie mostly at the far end of the infrared band, the longest ones in the microwave band. Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency [1] (THF), T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the International Telecommunication Union-designated band of frequencies from 0.1 to 10 ...

  7. Journal of Near Infrared Spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Journal_of_Near_Infrared...

    The Journal of Near Infrared Spectroscopy is a bimonthly peer-reviewed scientific journal published by SAGE Publishing in partnership with Optica. It was established in 1993 and covers near-infrared spectroscopy and its applications, with subtopics including chemometrics , chemical imaging , fiber optics , instrumentation and diffuse reflection .

  8. Infrared signature - Wikipedia

    en.wikipedia.org/wiki/Infrared_signature

    Infrared signature, as used by defense scientists and the military, is the appearance of objects to infrared sensors. [1] An infrared signature depends on many factors, including the shape and size of the object, [2] temperature, [3] and emissivity, reflection of external sources (earthshine, sunshine, skyshine) from the object's surface, [4] the background against which it is viewed [5] and ...

  9. Banya (sauna) - Wikipedia

    en.wikipedia.org/wiki/Banya_(sauna)

    The Russian banya is the closest relative of the Finnish sauna. In modern Russian, a sauna is often called a "Finnish banya", though possibly only to distinguish it from other ethnic high-temperature bathing facilities such as Turkish baths referred to as "Turkish banya". Sauna, with its ancient history amongst Nordic and Uralic peoples, is a ...

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