This reminds me of a gem of a comment from about a month back, about a dead simple Russian guidance system from a Cold War-era missile: https://news.ycombinator.com/item?id=47389285
What I find fascinating is the extreme efficiency of what is effectively an electric motor, reaching nearly 100% efficiency. At human scale we struggle with heat dissipation and friction
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pazimzadeh
at the scale that it operates, the flagella is more a drill than a propeller
Article stopped exactly where stuff got interesting.
This whole "protons entering bacterium and being pumped out" is exactly the ancestor of the mitochondria, that's what it does, except now the "outside" is the inside of the parent cell.
cineticdaffodil
To not use the motor is to prolong its life? So do not heat your body with the motor?
Also can work as atp generator by applying rotation ?
zimpenfish
For some context, a billion years at a 20 minute breeding cycle is 26.3 trillion generations.
Truly mind blowing. A few days ago I found this animation [1] that shows it in motion
[1] https://www.reddit.com/r/educationalgifs/comments/17squg1/ho...
This reminds me of a gem of a comment from about a month back, about a dead simple Russian guidance system from a Cold War-era missile: https://news.ycombinator.com/item?id=47389285
Actually, someone even commented in that thread about how it was similar to biological mechanisms: https://news.ycombinator.com/item?id=47390619
What I find fascinating is the extreme efficiency of what is effectively an electric motor, reaching nearly 100% efficiency. At human scale we struggle with heat dissipation and friction
at the scale that it operates, the flagella is more a drill than a propeller
there's a good richard feynam video about how things feel when they're that small https://www.youtube.com/watch?v=4eRCygdW--c
Relevant Smarter Every Day video: https://www.youtube.com/watch?v=VPSm9gJkPxU
Article stopped exactly where stuff got interesting.
This whole "protons entering bacterium and being pumped out" is exactly the ancestor of the mitochondria, that's what it does, except now the "outside" is the inside of the parent cell.
To not use the motor is to prolong its life? So do not heat your body with the motor?
Also can work as atp generator by applying rotation ?
For some context, a billion years at a 20 minute breeding cycle is 26.3 trillion generations.