Comment by jstanley
1 year ago
> Specifically, the Landauer’s principle states that all non-physically-reversible computation operations consume at least 10^21 J of energy at room temperature (and less as the temperature drops).
Wow! What an absurd claim!
I checked the Wikipedia page and I think you actually meant 10^-21 J :)
Fix! Ty!
P.S. I once calculated the mass of the sun as 0.7kg and got 9/10 points on the questions.
FYI, total global energy production is a lot less than 10^21 J. It's south of 10^19 from what I can google...
Depends on which aspects of energy production you're concerned with and over what time period. Global marketed energy production is about 18 terawatts, which is about 10²¹ J every year and 9 months. The energy globally produced by sunlight hitting the Earth, mostly as low-grade heat, is on the order of 100 petawatts, which is 10²¹ J every hour and a half or so. Global agriculture is in between these numbers.