How Much Does a Thought Weigh? a.) As much as an electron
b.) As much as a water molecule
c.) As much as a mosquito
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* The relationship between information and energy comes from Landauer’s Principle, which connects the erasure of information and energy. But, more generally changes in information (e.g. recording information) are related to changes in energy. I will talk more about this in a future episode about the physics of memory, and why you will forget everything you ever knew! https://en.wikipedia.org/wiki/Landauer%27s_principle
* The numbers calculated in this video give a lower limit on the energy to record a particular amount of information, but to create a more permanent storage of information would require more energy.
* Retina display resolution, as it’s name implies, is similar to the eye’s resolution.
Host, Producer: Greg Kestin
Researcher: Samia Bouzid
Animation & Compositing:
Filming, Writing, & Editing Contributions from:
Editorial Input form:
And the entire NOVA team
From the producers of PBS NOVA
? WGBH Educational Foundation
Funding provided by FQXi
Music provided by APM
Sound effects: Freesound.org
Neuron & Digital Brain footage: Pond5
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