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  2. Nikola Tesla - Wikipedia

    en.wikipedia.org/wiki/Nikola_Tesla

    The two men were experienced in setting up companies and promoting inventions and patents for financial gain. Based on Tesla's new ideas for electrical equipment, including a thermo-magnetic motor idea, they agreed to back the inventor financially and handle his patents.

  3. Sildenafil - Wikipedia

    en.wikipedia.org/wiki/Sildenafil

    Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9] It is unclear if it is effective for treating sexual dysfunction in females. [8]

  4. Human penis - Wikipedia

    en.wikipedia.org/wiki/Human_penis

    Human penis. In human anatomy, the penis ( / ˈpiːnɪs /; pl.: penises or penes; from the Latin pēnis, initially "tail" [1]) is an external male sex organ ( intromittent organ) that serves as a passage for excretion of urine and ejaculation of semen. The main parts are the root, body, the epithelium of the penis including the shaft skin, and ...

  5. Thirteenth Amendment to the United States Constitution

    en.wikipedia.org/wiki/Thirteenth_Amendment_to...

    The plain intention [of the amendment] was to abolish slavery of whatever name and form and all its badges and incidents; to render impossible any state of bondage; to make labor free, by prohibiting that control by which the personal service of one man is disposed of or coerced for another's benefit, which is the essence of involuntary servitude.

  6. Men's 100 metres world record progression - Wikipedia

    en.wikipedia.org/wiki/Men's_100_metres_world...

    One estimate suggests times in the 200 m sprint can be assisted by between 0.09 s and 0.14 s with the maximum allowable tailing wind of (2.0 m/s), and gain 0.3 s at altitudes over 2000 m. For this reason, unofficial low-altitude record lists have been compiled.

  7. Costa Rica - Wikipedia

    en.wikipedia.org/wiki/Costa_Rica

    Costa Rica ( UK: / ˌkɒstəˈriːkə /, US: / ˌkoʊstə -/ ⓘ; Spanish: [ˈkosta ˈrika]; literally "Rich Coast"), officially the Republic of Costa Rica, [11] is a country in the Central American region of North America. Costa Rica is bordered by Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the ...

  8. Google - Wikipedia

    en.wikipedia.org/wiki/Google

    Then Chairman and CEO Eric Schmidt (left) with co-founders Sergey Brin (center) and Larry Page (right) in 2008. Google LLC (/ ˈ ɡ uː ɡ ə l / ⓘ GOO-ghəl) is an American multinational corporation and technology company focusing on online advertising, search engine technology, cloud computing, computer software, quantum computing, e-commerce, consumer electronics, and artificial ...

  9. FIFA World Cup - Wikipedia

    en.wikipedia.org/wiki/FIFA_World_Cup

    The FIFA World Cup, often called the World Cup, is an international association football competition among the senior men's national teams of the members of the Fédération Internationale de Football Association ( FIFA ), the sport's global governing body. The tournament has been held every four years since the inaugural tournament in 1930 ...