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1 day ago · A blazed diffraction grating reflecting only the green portion of the spectrum from a room's fluorescent lighting. For a diffraction grating, the relationship between the grating spacing (i.e., the distance between adjacent grating grooves or slits), the angle of the wave (light) incidence to the grating, and the diffracted wave from the grating is known as the grating equation.
1 day ago · WebXray, a new tool made by a former Google Engineer, wants to make it easier. WebXray is a search engine that anyone can use to see how, specifically, websites are tracking you. A normal user can ...
7 hours ago · Witchcraft, as most commonly understood in both historical and present-day communities, is the use of alleged supernatural powers of magic. A witch is a practitioner of witchcraft. Traditionally, "witchcraft" means the use of magic or supernatural powers to inflict harm or misfortune on others, and this remains the most common and widespread ...
1 day ago · Deaths. 353,500 (2015) [8] Leukemia ( also spelled leukaemia; pronounced / luːˈkiːmiːə / [1] loo-KEE-mee-ə) is a group of blood cancers that usually begin in the bone marrow and produce high numbers of abnormal blood cells. [9] These blood cells are not fully developed and are called blasts or leukemia cells. [2]
1 day ago · Amarillo ( / ˌæməˈrɪloʊ / [6] AM-ə-RIL-oh; Spanish for "yellow") is a city in the U.S. state of Texas and the seat of Potter County. It is the 14th-most populous city in Texas and the most populous city in the Texas panhandle. [7] A portion of the city extends into Randall County. The estimated population of Amarillo was 200,393 as of ...
