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Lamb waves propagate in solid plates or spheres. [1] They are elastic waves whose particle motion lies in the plane that contains the direction of wave propagation and the direction perpendicular to the plate. In 1917, the English mathematician Horace Lamb published his classic analysis and description of acoustic waves of this type. Their ...
2004 – The Arabic-language news network Al Jazeera broadcasts an excerpt from a 2004 Osama bin Laden video in which the terrorist leader first admits direct responsibility for the September 11, 2001 attacks and references the 2004 U.S. presidential election. [28] 2005 – Bombings in Delhi, India kill 67 and injure over 200 people. [29]
The news might make you wonder: Can I get bird flu from food like eggs, poultry, and dairy? Here’s what a food safety expert wants you to know—plus, how to protect yourself.
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Nationwide, the U.S. laying hen flock in October was down 3% from the year prior, at about 315 million birds, and egg production was down 4%, according to the U.S. Department of Agriculture.
Casimir's analysis of idealized metal plates was generalized to arbitrary dielectric and realistic metal plates by Evgeny Lifshitz and his students. [ 5 ] [ 29 ] Using this approach, complications of the bounding surfaces, such as the modifications to the Casimir force due to finite conductivity, can be calculated numerically using the ...
The country in December reported its first severe human case of bird flu in a Louisiana resident, who was hospitalized in a critical condition after suspected contact with an infected backyard flock.
The Kincaid Mounds Historic Site (11MX2-11; 11PO2-10) [3] c. 1050–1400 CE, [4] is a Mississippian culture archaeological site located at the southern tip of present-day U.S. state of Illinois, along the Ohio River.