The Treaty of Amritsar of 1809 was an agreement between the British East India Company and Maharaja Ranjit Singh, the Sikh leader who founded the Sikh empire
Tyndall effect, also called Tyndall phenomenon, scattering of a beam of light by a medium containing small suspended particles—e.g., smoke or dust in a room, which makes visible a light beam entering a window. ... The effect is named for the 19th-century British physicist John Tyndall, who first studied it extensively.
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The Treaty of Amritsar of 1809 was an agreement between the British East India Company and Maharaja Ranjit Singh, the Sikh leader who founded the Sikh empire
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Tyndall effect, also called Tyndall phenomenon, scattering of a beam of light by a medium containing small suspended particles—e.g., smoke or dust in a room, which makes visible a light beam entering a window. ... The effect is named for the 19th-century British physicist John Tyndall, who first studied it extensively.
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