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A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
A reel-to-reel tape recorder (Sony TC-630), typical of a 1970s audiophile device. Reel-to-reel audio tape recording, also called open-reel recording, is magnetic tape audio recording in which the recording tape is spooled between reels. To prepare for use, the supply reel (or feed reel) containing the tape is placed on a spindle or hub.
The RCA connector [3] is a type of electrical connector commonly used to carry audio and video signals. The name RCA derives from the company Radio Corporation of America, which introduced the design in the 1930s. [4] The connector’s male plug and female jack are called RCA plug and RCA jack . It is also called RCA phono connector [5] or ...
Audiophile. An audiophile (from Latin: audīre, lit. 'to hear' + Greek: φίλος, romanized : philos, lit. 'loving') is a person who is enthusiastic about high-fidelity sound reproduction. [1] An audiophile seeks to reproduce recorded music to achieve high sound quality, typically in a quiet listening space and in a room with good acoustics.
The EIA 1956 Resolution Chart [1] [2] (until 1975 called RETMA Resolution Chart 1956) is a test card originally designed in 1956 to be used with black and white analogue TV systems, [3] [4] based on the previous (and very similar) RMA 1946 Resolution Chart. [5] [6] It consisted of a printed chart filmed by a TV camera or monoscope to be ...
Here is what you need to know about these three buy-and-hold defense stocks. 1. General Dynamics (trading around $300 a share) Defense companies understandably depend primarily on government ...
The National Recording Registry is a list of sound recordings that "are culturally, historically, or aesthetically significant, and/or inform or reflect life in the United States ." The registry was established by the National Recording Preservation Act of 2000, [1] which created the National Recording Preservation Board, whose members are ...
SOAP note. The SOAP note (an acronym for subjective, objective, assessment, and plan) is a method of documentation employed by healthcare providers to write out notes in a patient 's chart, along with other common formats, such as the admission note. [1] [2] Documenting patient encounters in the medical record is an integral part of practice ...