Lecture15-1 - AstroNova Intel considers cosmic ray effects...

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AstroNova Intel considers cosmic ray effects on PCs CR from SN, AGN, BH particle showers can induce charge in memories a CR detector in every computer? dark energy, cosmic neutrinos evolution of dark matter cosmic inflation
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Make-Up Midterm Exam Open only to those with excused absences prior arrangement with faculty or Dean’s notes required Wednesday, March 26, 5:30 – 6:50 pm SEC 206 (Busch Campus) Covers the same material as the regular midterm exam
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Midterm Exam Results Scores and grade interpretation posted on Sakai Exam mean score 63% 75% of exam questions were suggested by students Grades so far also posted Warnings for all with D or F A 29 - 35 B 23 - 28 C 16 - 22 D 13 - 15 F0 - 1
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In Thomas Kuhn’s analysis of the scientific method, crisis mode occurs when : A. A single, well-designed experiment contradicts the predictions of the current paradigm. B. A large amount of evidence builds up that convinces most scientists that the current paradigm must be incorrect. C. A long period of time passes with no contradictions to the current paradigm. D. A scientist comes up with a new theory that explains the existing body of experimental evidence just as well as the current paradigm does. E. Republicans control the White House and Congress, and budget cuts reduce the flow of financial support for science. Imagine compressing time by a factor of 15 billion to 1, so that everything that has happened from the instant of the big bang to the present time fits into a single year. On this “Cosmic Calendar”, when do human beings first appear? A. January 15 B. February 29 C. April 15 D. November 28 E. December 31 68% 82%
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parallax refers to: A. The change of a star’s position over time, arising from the motion of the star through space. B. The change of a star’s brightness over time, caused by the changing distance to the star as it moves through space. C. The apparent periodic motion of a star back and forth in the sky, caused by the Earth’s orbital motion about the Sun. D. The apparent change in the color of a star, caused by the slow increase of the temperature of the Earth. E. Two pieces of thinly sliced salmon, served on a bagel Two stars (named A and B) are observed to have the same proper motion (measured in arc-seconds per year). Star A is twice as far away from us as Star B. What can you say about the speed (measured in km/sec) of these stars perpendicular to the line of sight from us to each star? A. They must have the same speed. B. Star A must have twice the speed of star B. C. Star A must have half the speed of star B. D. The spectrum of Star A must be blueshifted, while that of star B must be redshifted. E.
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Lecture15-1 - AstroNova Intel considers cosmic ray effects...

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