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  2. Respirator assigned protection factors - Wikipedia

    en.wikipedia.org/wiki/Respirator_Assigned...

    Example of measurement of efficiency of the respirator (in the workplace). Description: (1) personal sampling pump, (2) the cassette and the filter for determining the concentration (in the breathing zone), (3) the sampling line (from the breathing zone), (4) the cassette and the filter to determine the concentration (under a mask), and (5) the sampling line (from the mask).

  3. MCU-2/P protective mask - Wikipedia

    en.wikipedia.org/wiki/MCU-2/P_protective_mask

    At Ellsworth Air Force Base. The MCU-2/P is a protective mask used by the United States Air Force and United States Navy, originally designed for the US Army as the XM-30 mask. In December 1982, the U.S. Air Force took over the XM-30 mask development. In 1983, the U.S. Navy requested the first masks off the production lines since the Army mask ...

  4. These KN95 and N95 Face Masks Help Protect Against the ... - AOL

    www.aol.com/kn95-n95-face-masks-help-182200553.html

    It can be hard to find quality KN95 and N95 face masks. These meet CDC and FDA standards, and they’re actually in stock. These KN95 and N95 Face Masks Help Protect Against the Flu, COVID, and RSV

  5. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    e. A self-contained breathing apparatus ( SCBA) is a respirator worn to provide an autonomous supply of breathable gas in an atmosphere that is immediately dangerous to life or health from a gas cylinder. [1] They are typically used in firefighting and industry. The term self-contained means that the SCBA is not dependent on a remote supply of ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  7. Hypersonic speed - Wikipedia

    en.wikipedia.org/wiki/Hypersonic_speed

    [00.8) <614 mph (988 km/h; 274 m/s) Most often propeller-driven and commercial turbofan aircraft with high-aspect-ratio (slender) wings, and rounded features like the nose and leading edges. The subsonic speed range is that range of speeds within which, all of the airflow over an aircraft is less than Mach 1.

  8. Hyperspectral imaging - Wikipedia

    en.wikipedia.org/wiki/Hyperspectral_imaging

    Hyperspectral imaging collects and processes information from across the electromagnetic spectrum. [1] The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes. [2] [3] There are three general types of spectral imagers ...

  9. Supersonic speed - Wikipedia

    en.wikipedia.org/wiki/Supersonic_speed

    Supersonic speed is the speed of an object that exceeds the speed of sound ( Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343.2 m/s (1,126 ft/s; 768 mph; 667.1 kn; 1,236 km/h). Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic.

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