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X-ray Impact, Riccardo Giacconi

X-ray Impact, Riccardo Giacconi. What uses X-rays?. baggage scanners Airline scanners Homeland security scanners X-ray photographs of a broken bone—radiographs CAT scans radiation therapy/ cancer treatment ?X-men comics?. When were X-rays discovered ? . 1895, by William Roentgen

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X-ray Impact, Riccardo Giacconi

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  1. X-ray Impact, RiccardoGiacconi

  2. What uses X-rays? • baggage scanners • Airline scanners • Homeland security scanners • X-ray photographs of a broken bone—radiographs • CAT scans • radiation therapy/ cancer treatment • ?X-men comics?

  3. When were X-rays discovered? • 1895, by William Roentgen • working with cathode ray tubes discovered an invisible ray that could pass through cardboard • Took a radiograph (x-ray) of his wife’s hand and ring.

  4. Why is not good to play with X-rays? • early uses: • shoe fitting fluoroscopes—1920’s • hair removal • taking pictures of bones

  5. When were celestial X-rays discovered • 1949 • Why did it take soooolong? (1895 to 1949…) • X-rays cannot penetrate the Earth’s atmosphere (That’s a good thing….)

  6. Outline • Class time: 2 x 45 min, or one block of 90 min. May be more effective as last half of one block and first half of second (allows time at home to digest reading) • No in class X-ray experiments… (OSHA = )

  7. Outline • (20 min)Students will work in groups to prepare a short summary, answer questions from the reading guide and share their “mark-ups**” for a section of the reading. • **mark-ups are passages, phrases or words that required additional interaction, e.g. high-lighting, paraphrasing or defining. Thus, they should be “marked up” on the student’s reading material. • (25 min) Groups will present their summary, answers and mark-ups to the rest of the class so the entire class will have the information from the whole reading. • (35 min) The class will discuss the entire passage to address the discussion questions and other observations and questions that arise from students. • (10 min)Exit ticket or short essay on what students found interesting, or specific teacher directed prompt from the discussion.

  8. Discussion • 1. What do you feel Giancconi would say are important traits for a scientist? Cite specific examples from the reading. • 2. Do you feel the pursuit of x-ray research has been necessary and justified? • 3. Is science the solitary pursuit of a single person or a group of people working together? Can you find examples in the reading? Are there examples you know of outside the reading?

  9. Extension: The V-2 Rocket • Used after capture by Naval Research Lab • 80 assembled and launched, all had 2000 lb payload. Didn’t want to have standard “explosive” payload, why not put instrumentation on board… • Lead to rocket programs • Not extremely effective war tool for Germany

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