Neil deGrasse Tyson and Chuck Nice tackle fan questions on Maxwell's Equations, symmetry in nature, and the physics around us. They discuss the interconnectedness of physics in everyday life, the beauty of imperfections, and the potential impact of alien visitors on human progress. Topics range from black holes to societal contributions of physics and mathematics degrees.
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Quick takeaways
Physics laws remain constant once verified, expanding understanding.
Theoretical concepts evolve from evidence and experimentation.
Solar energy's adoption depends on battery tech advancement and economics.
Deep dives
Explanation of Thunder
During a thunderstorm, water droplets in the clouds carry a net negative charge. When the charges build up, lightning strikes between the ground and the cloud, creating an extremely hot arc of light. This arc heats the air, causing it to expand catastrophically, leading to a shock wave. The expanding air is what creates the thunder sound that we hear after seeing the lightning, as it moves at the speed of sound.
Physics Laws and Theories
Established laws and theories in physics are not changed once experimentally verified. The understanding can expand, but the fundamentals remain. The term 'law' has been replaced with 'theory' to reflect the ongoing exploration and enlargement of our knowledge. These theoretical concepts are based on evidence and experimentation, and they provide a foundation for further scientific discovery.
Solar Energy Economics
Solar energy is a constant free source of energy, but the devices to harness and convert it into useful forms come at a cost. The advancement of battery technology is crucial for storing solar energy efficiently. The shift towards solar power will depend on economics tipping in its favor, much like how other energy sources have been subsidized in the past. As demand and technology improve, solar energy may become more widely adopted.
Changing Laws of Physics
The laws of physics, such as Newton's laws of motion and the laws of thermodynamics, do not change once established. These fundamental principles, once experimentally verified, remain constant. Rather than changing, the understanding of physics expands to encompass broader knowledge and complexities of the universe.
Overview on Thunder Creation
Thunder is caused by the expansion of air following a lightning strike during a thunderstorm. Lightning occurs due to the separation of charges in the clouds, creating an electrical arc that heats the air to extreme temperatures. This hot air rapidly expands, forming a shock wave that produces the booming sound we hear as thunder. The delay between lightning and thunder can be used to estimate the storm's distance.
What would aliens think of our inventions? Neil deGrasse Tyson and comedian Chuck Nice answer fan questions on Maxwell’s Equations, the symmetry of the universe, and the physics around us all the time.