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First Mechanical Gear Found in a Living Creature

popularmechanics.com

31–40 of 191 posts

Re: First Mechanical Gear Found in a Living Creature

#31
post #18
post #10

Earlier quoted context omitted.

Four. A gear is just a piece of geometry that happens to be useful for a number of practical purposes. Same with rods, rings, and so on. People apply labels to it according to how they perceive it.

And what's the limit for such innovation? can microprocessors be developed naturally?

Brains developed naturally, so I'd imagine evolution would be capable of developing a natural analogue to a microprocessor if there was sufficient and sustained evolutionary pressure for such an adaptation.

Re: First Mechanical Gear Found in a Living Creature

#32
post #2

This gives us four possibilities: 1. This geared creature must be considered part mechanical. A cyborg, if you will. 2. A "gear" is no longer (and was never) a "mechanical" device, but instead an organic one. Using gears is no longer (and was maybe never) doing mechanics. 3. Whether something is mechanical or organic depends on the process which created it. This is the "colored bits" or "patent" view. (If I build som…

5. A gear is no longer (and was never) either mechanic or organic, it's simply a pattern for solving a certain type of problem. Humans and evolution both found it, but it's more useful for humans.

Re: First Mechanical Gear Found in a Living Creature

#33
post #2

This gives us four possibilities: 1. This geared creature must be considered part mechanical. A cyborg, if you will. 2. A "gear" is no longer (and was never) a "mechanical" device, but instead an organic one. Using gears is no longer (and was maybe never) doing mechanics. 3. Whether something is mechanical or organic depends on the process which created it. This is the "colored bits" or "patent" view. (If I build som…

5. "mechanical", in the sense used here (roughly, "performing a function involving physical as distinct from (bio)chemical, nuclear, etc., mechanisms") is orthogonal to any sense of the word "organic", plenty of other biologically-produced structures are "mechanical" in teh same sense; its not that there is a false dichotomy at issue, the senses of the words are well-understood to not form a dichotomy at all, though there are other senses of the same words that might be part of something understood (rightly or not) as a dichotomy.

Re: First Mechanical Gear Found in a Living Creature

#36
post #2

This gives us four possibilities: 1. This geared creature must be considered part mechanical. A cyborg, if you will. 2. A "gear" is no longer (and was never) a "mechanical" device, but instead an organic one. Using gears is no longer (and was maybe never) doing mechanics. 3. Whether something is mechanical or organic depends on the process which created it. This is the "colored bits" or "patent" view. (If I build som…

lenses

Re: First Mechanical Gear Found in a Living Creature

#38
post #2

This gives us four possibilities: 1. This geared creature must be considered part mechanical. A cyborg, if you will. 2. A "gear" is no longer (and was never) a "mechanical" device, but instead an organic one. Using gears is no longer (and was maybe never) doing mechanics. 3. Whether something is mechanical or organic depends on the process which created it. This is the "colored bits" or "patent" view. (If I build som…

Makes me wonder. Suppose someone holds some sort of gear-patent and it turns out the gear-structure is used by organisms that predate mankind (or are older than the patent at least)...would said patent become null and void due to "prior art" or is it sufficient that the manmade gear lives in another application domain?

Re: First Mechanical Gear Found in a Living Creature

#39
post #15
post #2

This gives us four possibilities: 1. This geared creature must be considered part mechanical. A cyborg, if you will. 2. A "gear" is no longer (and was never) a "mechanical" device, but instead an organic one. Using gears is no longer (and was maybe never) doing mechanics. 3. Whether something is mechanical or organic depends on the process which created it. This is the "colored bits" or "patent" view. (If I build som…

5) Organic creatures have mechanical systems as part of their physiology. "Mechanical" doesn't mean "made of metal", it means "uses movement and friction to achieve some effect". Some mechanical devices, such as levers and swivels, are seen frequently in the animal kingdom; others, such as gears, pulleys, and wheels, are almost never seen in nature. Discovering one of this latter category is a fascinating find.

e.g. Our arms are levers. Bacteria flagella are rotary bearings. Etc.

Re: First Mechanical Gear Found in a Living Creature

#40
post #34

I'm pretty sure that the bacterial flagellum is effectively a mechanical gear: http://en.wikipedia.org/wiki/Rotating_locomotion_in_living_s...

No, it converts the proton concentration gradient into mechanical energy.

The ATP synthase also works that way. The ADP and Pi are mechanically squeezed against each other in order to create the covalent bound.

See the last two videos of [0] for the general process. The first three focus on details.

[0] http://www.mrc-mbu.cam.ac.uk/category/slideshows/atpmovies

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