l21 - Today Announcements HW #8 due Friday (tomorrow) 8am...

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ISP209s10 Lecture 20 -1- Today • Announcements – HW #8 due Friday (tomorrow) 8am – Test #2 average was 31/40 … not as bad as it first appeared (several answer sheets were put in the wrong pile) • Big Bang theory cont’d • Introduction to black holes
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ISP209s10 Lecture 20 -2- Clicker question What is the Big Bang: A) The nickname for nuclear explosions coined by einstein. B) A hypothesis about dinosaur extinction being caused by a violent burst of neutrinos from outer space C) The event some 14 billion years ago that was the beginning of the universe D) The event roughly 14 billion years from now that will mark The end of the universe
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ISP209s10 Lecture 20 -3- Clicker question What is the Big Bang: A) The nickname for nuclear explosions coined by einstein. B) A hypothesis about dinosaur extinction being caused by a violent burst of neutrinos from outer space C) The event some 14 billion years ago that was the beginning of the universe D) The event roughly 14 billion years from now that will mark The end of the universe
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ISP209s10 Lecture 20 -4- Clicker question What is the main evidence for the Big Bang theory: A) The cosmic microwave background radiation B) The abundance of hydrogen and helium in the universe C) The expansion of the universe D) All of the above E) None of the above
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ISP209s10 Lecture 20 -5- Clicker question What is the main evidence for the Big Bang theory: A) The cosmic microwave background radiation B) The abundance of hydrogen and helium in the universe C) The expansion of the universe D) All of the above E) None of the above
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ISP209s10 Lecture 20 -6- Clicker question How was the crucial evidence for the big bang theory -- the cosmic microwave background radiation -- discovered? A) By looking at black body radiation coming from distant stars B) By using parallax methods to measure large distances C) By way of an experiment designed by Penzias and Wilson to find the cosmic microwave background using special antennas D) Penzias and Wilson looked for the telltale neutrino signals in A special laboratory constructed far underground E) None of the above
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ISP209s10 Lecture 20 -7- Clicker question How was the crucial evidence for the big bang theory -- the cosmic microwave background radiation -- discovered? A) By looking at black body radiation coming from distant stars B) By using parallax methods to measure large distances C) By way of an experiment designed by Penzias and Wilson to find the cosmic microwave background using special antennas D) Penzias and Wilson looked for the telltale neutrino signals in E) None of the above Penzias and Wilson found it by accident when they Were trying to track down the source of an annoying Hissing sound in the early satellite-based telephone Networks.
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ISP209s10 Lecture 20 -8- Clicker question
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l21 - Today Announcements HW #8 due Friday (tomorrow) 8am...

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