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  2. Prism (Katy Perry album) - Wikipedia

    en.wikipedia.org/wiki/Prism_(Katy_Perry_album)

    Prism is the fourth studio album by American singer Katy Perry. It was released by Capitol Records on October 18, 2013. While the album was initially planned to be "darker" than her previous material, Prism ultimately became a prominently dance-inspired record. Perry worked with several past collaborators, while enlisting new producers and ...

  3. Archimedes - Wikipedia

    en.wikipedia.org/wiki/Archimedes

    Without the use of either trigonometry or a table of chords, Archimedes determines the Sun's apparent diameter by first describing the procedure and instrument used to make observations (a straight rod with pegs or grooves), [58] [59] applying correction factors to these measurements, and finally giving the result in the form of upper and lower ...

  4. Isaac Newton - Wikipedia

    en.wikipedia.org/wiki/Isaac_Newton

    During this period he investigated the refraction of light, demonstrating that the multicoloured image produced by a prism, which he named a spectrum, could be recomposed into white light by a lens and a second prism. [63] Modern scholarship has revealed that Newton's analysis and resynthesis of white light owes a debt to corpuscular alchemy. [64]

  5. Lion - Wikipedia

    en.wikipedia.org/wiki/Lion

    The lion (Panthera leo) is a large cat of the genus Panthera, native to Africa and India. It has a muscular, broad-chested body; a short, rounded head; round ears; and a dark, hairy tuft at the tip of its tail. It is sexually dimorphic; adult male lions are larger than females and have a prominent mane.

  6. Mister Sinister - Wikipedia

    en.wikipedia.org/wiki/Mister_Sinister

    Mister Sinister (Dr. Nathaniel Essex) is a supervillain appearing in American comic books published by Marvel Comics.Created by writer Chris Claremont, the character was first mentioned as the employer behind the team of assassins known as the Marauders in The Uncanny X-Men #212 (December 1986), and later seen in silhouette in The Uncanny X-Men #213, with both issues serving as chapters of the ...

  7. List of inventors - Wikipedia

    en.wikipedia.org/wiki/List_of_inventors

    Benjamin Franklin (1706–1790), U.S. – the pointed lightning rod conductor, bifocal glasses, the Franklin stove, the glass harmonica; Herman Frasch (1851–1914), Germany / U.S. – Frasch process (petrochemistry), Paraffin wax purification

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