XR1. X-ray tools


X-ray light has much more energy that optical. If you try to capture x-ray light with a reflecting telescope like you do for optical light (which is also called visible light), the x-rays would go right through the mirror. It took someone with a very creative outlook to develop a detector that could catch X-rays. Harvey Moseley was that person. As you read through Harvey’s story think about the questions listed below. Write out an answer or reflection for each section. Each section includes several webpages. Upload your answers to Moodle.

A Farm Education

  • 1. Harvey grew up on a farm in an area of the country that his family had been since before the founding of the United States. He had the opportunity to fix farm equipment with his father by taking it apart and putting it back together again. “A surprisingly good education” is what Harvey called it. What kind of experiences have you had that gave you “a surprisingly good education” outside of the classroom? 

Leaving Home – Coming to Chicago

  • 2. Harvey’s move to boarding school gave him exposure to better curriculum and helped him become a better student, but it came at a price. Do you think it was worth it? 
  • 3. From Virginia to Connecticut to Chicago (well, really Wisconsin!). By his early 20s, this farm boy had been halfway across the country. At the University of Chicago Harvey had the opportunity to work in infrared astronomy with the Kuiper Airborne Observatory. This telescope allowed astronomers to look at wavelengths of infrared light that couldn’t get down to the surface of the Earth. What effect do you think this experience had on Harvey in light of his later work with X-ray light and gamma ray light detectors?
    • The newest airborne observatory is SOFIA – the Stratospheric Observatory for Infrared Astronomy. It just started test flights in 2012. Learn more

The Cosmic Background Explorer

  • 4. Harvey’s work with CoBE brought him into contact with John Mather and George Smoot. These two men won the Nobel Prize in 2006 for their work and discoveries using this COBE telescope. This telescope that Harvey helped build looked at the light from the Big Bang that is still shining down on us. Spend some time to understand the importance of this telescope and its discoveries by choosing one of these links below to explore. Then describe what you think is the reason they got the Nobel Prize and if it is a worthy reason.  

Detecting X-rays – Serendipity in Science

  •  5. Can you imagine pulling out a piece of paper from a drawer with a calculation you had done a year before and using it to launch a new type of detector for a telescope? That is what Harvey did when the X-ray group came knocking on his door and a micro calorimeter that has high resolution was evidently developed. He calls this one of those “serendipitous moments in science.” Think about today’s climate of instantaneous results and impatience for long term research. The public and Congress often do not want to fund scientific research that doesn’t have a quick payoff. How does this attitude affect what Harvey says we have to keep doing, in regards to keeping people thinking and inventing?
  • 6.  The microcalorimeter spectrometer (called XRS) Dan and Harvey developed was used for the first time in the Astro-E Astronomy mission. This was a joint project between Japan and the United States. Unfortunately, the rocket it was on failed 42 seconds after launch and it crashed back into the ocean. It was five more years before a second one was launched and that one had problems also. Another calorimeter will be going up during 2013-14 and hopefully will be the first working one. What would you have done, how would you have felt if it had been your work crashing into the ocean?Would you have been able to keep working on another one?

The James Webb Space Telescope

Advice to Young Scientists – The Nature of Scientific Inquiry

8.  Harvey made several points in his advice to young scientists. Some are listed below. Which do you think is the most important? Explain why.

  • The trick is, you have to be so enthusiastic about tackling the work that you’re willing to put the time in to do it. It’s an emotional investment.
  • The technical stuff you can learn to do, but to answer interesting questions you have to figure out how to improve upon something to solve your problem.
  • Find the best thing in the world, and then duplicate it. Once you can do that, then you can try some innovation.
  • Inquiry involves connecting things that are from very different phases of your experience and exploring and discussing them with a team of people with different ideas and experiences of their own.

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