Theories of Everything with Curt Jaimungal Intro to Modern Physics in 13m (Primer for Noobs 2023)
Jan 10, 2023
Delve into the philosophical depths of scientific measurements like meters and seconds, questioning their true significance. Explore the concept of natural units and the profound implications of setting constants such as the speed of light to one. Gain clarity on the role of 'C' in modern physics and break down complex principles with relatable analogies. Challenge common misconceptions and rethink the foundations of physics as human constructs shape our understanding of the universe.
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Natural Units
- Natural units in physics are values invariant across the universe, simplifying equations and removing arbitrary human qualities.
- These units, like the speed of light (c) and the reduced Planck constant (ħ), help make equations simpler.
Defining a Second (and a kilogram)
- Curt Jaimungal explains the operational definition of a second by referencing the duration of radiation periods of a cesium atom.
- He humorously suggests the number was arbitrarily chosen, comparing it to someone taking meth and coming up with a number.
Dimensionless Observables
- Curt Jaimungal explains that observable quantities in physics are dimensionless ratios, not units themselves.
- He emphasizes that units are a human construct to compare against a reference quantity, like comparing our weight to metal slabs in Paris.