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This is called the fermi hart paradox and may be the

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-This is called theFermi-Hart paradoxand may be the strongest argument against widespread intelligence inthe Universe. But like the Drake equation, it is only an estimate!The Search for Extraterrestrial IntelligenceFirst searchesNikola Tesla (1901)invented use of AC for transmitting electrical powerGuglielmo Marconisent first transatltantic radio message (UK -> Canada)Both detected static in their instrumentswhich was likely caused by distant lightning “whistlers”Encouraged listening in to Martian radio broadcast during a close passage in 1924The radio waves are a logical region to “listen”Radio region is very broadNeed to scan in “bands” of fixed “bandwidth”
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/Applied-Calculus-for-the-Managerial-Life-and-Social-Sciences-A-Brief-Approach-10th-Edition-9781285464640-743/
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Chapter 2 / Exercise 69
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Tan
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Narrow-band carrier used to focus antennaeThe Arecibo MessageEncoded as 1679 frequency flashes= 23 * 73 (prime numbers)sent to M13 globular cluster (25,000 ly away)Numbers: 1 to 105 atoms in DNA: H, C, N, O, Pthe chemistry and structure of DNAhuman population, shape, and sizelocation of Earth in Solar Systempictograph of sending telescopeM13 globular cluster: ~300,000 starsAllen Telescope Array, CaliforniaWhat can hope to detect:telecommunications signalssignals to another world inhabited by same civsignals targeted at usOptical SETI experiment, Lick Observatory, California
Dyson sphere: captures all of a star’s energyWhat we Have Learned?
Quiz:11.1: Other Stars1.Which of the following stars is the hottest?DD

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Term
Spring
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Tags
Extraterrestrial life, SETI, Globular cluster, NHP
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
The document you are viewing contains questions related to this textbook.
Chapter 2 / Exercise 69
Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach
Tan
Expert Verified

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