DescriptionThe Beat Generation was a literary movement started by a group of authors whose work explored and influenced American culture and politics in the post-war era. The bulk of their work was published and popularized throughout the 1950s
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The back lawn of white house
Answer:
The first evidence of helium was obtained on August 18, 1868 by french astronomer jules janssen.
Explanation:
For some time helium was believed to exist only in the sun. However in 1882, Italian physicist Luigi Palmieri detected helium on earth when analyzing lava from mount vesuvius after it erupted in that year.