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Van Allen, James Alfred

Syllabification: Van Al·len, James Alfred
Pronunciation: /van ˈalən
 
/

Definition of Van Allen, James Alfred in English:

( 1914–2006), US physicist. He used balloons and rockets to study cosmic radiation in the upper atmosphere and showed that specific zones of high radiation were the result of charged particles from the solar wind being trapped in two belts around the earth.

Definition of Van Allen, James Alfred in:

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Word of the day peart
Pronunciation: pərt
adjective
lively; cheerful