单词	point source
释义	point source noun 1 : a source of radiation (such as light) that is concentrated at a point and considered as having no spatial extension 2 : an identifiable confined source (such as a smokestack or wastewater treatment plant) from which a pollutant is discharged or emitted Example Sentences Recent Examples on the Web The company uses point source capture technology to extract CO2 from the atmosphere, and then creates carbon nanotubes that can be used in many ways, rather than having to dispose of the CO2 deep underground by CCS. Ian Palmer, Forbes, 1 May 2022 Shouting Down Midnight understands this, and perhaps that’s why Stoeltje’s informative film uses Davis’ historic filibuster as a point source — an electrifying moment that activated more Texan women to organize. Lovia Gyarkye, The Hollywood Reporter, 12 Mar. 2022 Capturing carbon where it's produced involves filtering out CO2 from a point source of emissions, such as a fertilizer plant, power station or gas field. Irina Ivanova, CBS News, 18 Jan. 2022 Through the Clean Water Act, point source pollution, which generally comes from an identifiable place such as a discharge pipe, can be regulated. Morgan Greene, chicagotribune.com, 20 Dec. 2021 Also, the fact that the kill occurred over a long stretch of the lakeshore indicates a single-point source of pollution was not the cause. Peter Krouse, cleveland, 11 Sep. 2021 Now, because of the impaired waters listing, these point source polluters are facing a new wave of expensive pollution control upgrades that may do little to keep Green Bay's fish from suffocating in their own water. jsonline.com, 2 Sep. 2021 All sounds are point source, and immersion is now de facto standard. Bobby Owsinski, Forbes, 18 Apr. 2021 Hubble's optical resolution is not high enough to actually 'see' the planet as a dot of light separate from its star, so instead, the telescope receives light from both objects that mix into a single point source. Devin Powell, Scientific American, 11 July 2013 See More Word History First Known Use 1894, in the meaning defined at sense 1
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