x-rays were invented by Wilhelm Roentzen, a German Physicist, in 1895. He received Nobel prize for that invention in 1901. He lived from 1845-1923.
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Kavitha Komatineni 4th Grade(2007-2008) |
"A Great Resource for 4th Grade"
Are you a Teacher (or otherwise) interested in collaborating to develop content for 4th graders?? Click here to see details
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