AaS! 196: Could We Ever Build a Dyson Sphere?
Ask a Spaceman!21 Mars 2023

AaS! 196: Could We Ever Build a Dyson Sphere?

What are Dyson spheres? What would be involved in building one? How much energy would it cost, and could we ever pay it back? I discuss these questions and more in today's Ask a Spaceman!

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Thanks to Cathy Rinella for editing.

Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).

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AaS! 190: What is the Meaning of Quantum Mechanics? (Part 8: For Nothing is Hidden)

AaS! 190: What is the Meaning of Quantum Mechanics? (Part 8: For Nothing is Hidden)

Part 8! What is real in quantum mechanics, and what are mere mathematical tricks? Can the probability waves be real, and what would that mean? What is Pilot-Wave theory? I discuss these questions and ...

20 Dec 202240min

AaS! 189: What is the Meaning of Quantum Mechanics? (Part 7: Many Worlds, Infinite Possibilities)

AaS! 189: What is the Meaning of Quantum Mechanics? (Part 7: Many Worlds, Infinite Possibilities)

Part 7! What is the many-worlds interpretation of quantum mechanics? How does decoherence play a critical role? What are the strengths and weaknesses of this idea? I discuss these questions and more i...

6 Dec 202247min

AaS! 188: What is the Meaning of Quantum Mechanics? (Part 6: Einstein's Revenge)

AaS! 188: What is the Meaning of Quantum Mechanics? (Part 6: Einstein's Revenge)

Part 6! What were Einstein's objections to quantum mechanics? Why was he so bothered by non-locality? What is the EPR paradox? I discuss these questions and more in today's Ask a Spaceman! Support the...

15 Nov 202237min

AaS! 187: What is the Meaning of Quantum Mechanics? (Part 5: Dreams of Copenhagen)

AaS! 187: What is the Meaning of Quantum Mechanics? (Part 5: Dreams of Copenhagen)

Part 5! What is the Copenhagen interpretation? How did the debates between Heisenberg and Schrodinger influence later physicists? What are the strengths and weaknesses of the "shut up and calculate" a...

1 Nov 202237min

AaS! 186: What is the Meaning of Quantum Mechanics? (Part 4: It's a Quantum, Quantum, Quantum World)

AaS! 186: What is the Meaning of Quantum Mechanics? (Part 4: It's a Quantum, Quantum, Quantum World)

Part 4! What are the basic lessons of quantum mechanics? What does quantum mechanics teach us about the nature of reality? How does a quantum worldview differ from a classical one? I discuss these que...

18 Okt 202227min

AaS! 185: What is the Meaning of Quantum Mechanics? (Part 3: There and Back Again)

AaS! 185: What is the Meaning of Quantum Mechanics? (Part 3: There and Back Again)

Part 3! Who developed quantum theory and why? What experiments motivated the creation of quantum mechanics? How was quantum mechanics a total break from classical physics? I discuss these questions an...

4 Okt 202245min

AaS! 184: What is the Meaning of Quantum Mechanics? (Part 2: Quantum Mechanics 102)

AaS! 184: What is the Meaning of Quantum Mechanics? (Part 2: Quantum Mechanics 102)

Part 2! How do physicists understand quantum mechanics? What are the postulates and principles of quantum mechanics? How do the foundations of quantum mechanics compare to other theories? I discuss th...

20 Sep 202241min

AaS! 183: What is the Meaning of Quantum Mechanics? (Part 1: This Way to the Weird)

AaS! 183: What is the Meaning of Quantum Mechanics? (Part 1: This Way to the Weird)

Part 1! Where does quantum theory fit in the larger tapestry of physics? What is the domain of quantum mechanics? And most importantly, what are the limits of quantum physics? I discuss these question...

6 Sep 202237min

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