Efficiency
02-23-18, 06:31 PM
#26
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Both human and machine combusts energy into heat and work.
how much heat is released to work produced is efficiency. Something that is 100% efficient only produces work, and no heat.
Or sort of, basically is how much distance can a certain fuel get you. Energy of that fuel can be calculated by burning it (that's basically how calories is calculated). 1cal is 4.184J. They're both a measurement of energy. And likewise q aka heat is also a measure of energy.
how much heat is released to work produced is efficiency. Something that is 100% efficient only produces work, and no heat.
Or sort of, basically is how much distance can a certain fuel get you. Energy of that fuel can be calculated by burning it (that's basically how calories is calculated). 1cal is 4.184J. They're both a measurement of energy. And likewise q aka heat is also a measure of energy.
02-23-18, 06:48 PM
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Really, gravity is only the description of the effects of Maas on Space. In effect, the effort you feel riding up a hill is caused by time slowing down as you get further from the center of mass. Apparently this hurts. Thank God time pulls us back toward Earths’ “normal” time. Something to think about as you attack your next rise.
02-23-18, 06:54 PM
#28
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A bicycle is the most efficient machine in terms of energy expended for moving weight over distance.
A human on a bicycle is also the most efficient animal on earth in terms of energy spent for travel.
Bicycling is six times more efficient than walking.
Using a bicycle, it takes 35 calories to move an average-size person one mile (1.6 km). It takes 1,860 calories to move a person a mile in a car. So, the bicycle uses two percent as much energy as a car.
from BikeAlmanac.com
A human on a bicycle is also the most efficient animal on earth in terms of energy spent for travel.
Bicycling is six times more efficient than walking.
Using a bicycle, it takes 35 calories to move an average-size person one mile (1.6 km). It takes 1,860 calories to move a person a mile in a car. So, the bicycle uses two percent as much energy as a car.
from BikeAlmanac.com
But it does make things easier. I guess I could write a short piece claiming there's proof that the moon is made of green cheese. Then I'll go on an astronomy forum and post that the moon is really made green cheese, and provide a link supporting the claim.
--------------------------
BTW - it was tempting to accuse the OP of circular reasoning, but that doesn't really apply here. So, for future reference, does anyone know of or have a term to describe the act of citing one's own past writing as supporting evidence for a claim?
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WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Last edited by FBinNY; 02-23-18 at 07:01 PM.
02-23-18, 07:06 PM
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The Common Swift Is the New Record Holder for Longest Uninterrupted Flight | Audubon
02-23-18, 07:33 PM
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This isn't true at all. The common Swift can stay in the air for ten months, straight.
The Common Swift Is the New Record Holder for Longest Uninterrupted Flight | Audubon
The Common Swift Is the New Record Holder for Longest Uninterrupted Flight | Audubon
Did you write that article?
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WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
02-23-18, 07:38 PM
#31
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This isn't true at all. The common Swift can stay in the air for ten months, straight.
The Common Swift Is the New Record Holder for Longest Uninterrupted Flight | Audubon
The Common Swift Is the New Record Holder for Longest Uninterrupted Flight | Audubon
I'm voting for the sloth. Assuming there is no need to hurry, the sloth has to be most efficient. I mean, he could walk at that speed like, forever.
02-23-18, 07:41 PM
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It's from the Audubon society, and no 
I know very little about birds. Saw a cool program about them though - they sleep on the wing, literally. Something about how they also shutdown certain areas of the brain while cruising.
Oh my, yes the sloth is a good contender. Glad I can contribute before the lock
I know very little about birds. Saw a cool program about them though - they sleep on the wing, literally. Something about how they also shutdown certain areas of the brain while cruising.Oh my, yes the sloth is a good contender. Glad I can contribute before the lock
02-23-18, 07:47 PM
#33
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No explanation was called for. I was simply driving a nail home.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
Wwwhat?
02-23-18, 08:50 PM
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BTW - watching the partial eclipse last month, I've become convinced that it isn't made of green cheese. It looked more like an aged Mimolette.
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
02-23-18, 09:00 PM
#38
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Actually a steel wheel on a steel rail is the most efficient, but the bicycle is second.
02-24-18, 06:27 AM
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Indeed. We are also free to comment on those posts, so long as our comments are within forum guidelines.
I am not making personal attacks or insulting the OP when I point out that he has made three basically meaningless posts and comes across as someone who does not know at all what he is talking about.
My impression is that the OP trying to create posts on topics with which he is totally unfamiliar. I do not know why.
I would suggest the OP write about his/her bikes or personal cycling experiences. So far, we have seen three posts---this one on "Efficiency," "Safety," and "How to fail at business by not really trying." (Whoops, I missed "Bicycle Technology Picture Book.”)
Every one of these posts strike me as not be honest ... as in, the person is not honestly seeking a discussion on the stated topics.
Again, I would suggest the OP post about his/her bikes and riding experiences. If the OP chooses to do otherwise, that is also fine.
If a person walked up to me at a party and said stuff like this I would politely walk away ... unless it was my party in which case I would ask they guy who invited him and why he was there.
This forum is sort of in between. So I want the guy to actually talk honestly about stuff he knows about .... and I will responds in the same fashion.
That seems fair and not unrighteous.
I am not making personal attacks or insulting the OP when I point out that he has made three basically meaningless posts and comes across as someone who does not know at all what he is talking about.
My impression is that the OP trying to create posts on topics with which he is totally unfamiliar. I do not know why.
I would suggest the OP write about his/her bikes or personal cycling experiences. So far, we have seen three posts---this one on "Efficiency," "Safety," and "How to fail at business by not really trying." (Whoops, I missed "Bicycle Technology Picture Book.”)
Every one of these posts strike me as not be honest ... as in, the person is not honestly seeking a discussion on the stated topics.
Again, I would suggest the OP post about his/her bikes and riding experiences. If the OP chooses to do otherwise, that is also fine.
If a person walked up to me at a party and said stuff like this I would politely walk away ... unless it was my party in which case I would ask they guy who invited him and why he was there.
This forum is sort of in between. So I want the guy to actually talk honestly about stuff he knows about .... and I will responds in the same fashion.
That seems fair and not unrighteous.
02-24-18, 06:42 AM
#40
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Really, gravity is only the description of the effects of Maas on Space. In effect, the effort you feel riding up a hill is caused by time slowing down as you get further from the center of mass. Apparently this hurts. Thank God time pulls us back toward Earths’ “normal” time. Something to think about as you attack your next rise.
02-24-18, 07:37 AM
#41
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Don't discount the lowered drag as atmospheric density drops at altitude.
02-24-18, 07:40 AM
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I think if you include the energy cost of fuel production and distribution, mpg equivalent comes out about the same for 4 or 5 people cycling or car-pooling in a modern high-mpg vehicle.
02-24-18, 07:50 AM
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Really, gravity is only the description of the effects of Maas on Space. In effect, the effort you feel riding up a hill is caused by time slowing down as you get further from the center of mass. Apparently this hurts. Thank God time pulls us back toward Earths’ “normal” time. Something to think about as you attack your next rise.
https://en.m.wikipedia.org/wiki/Grav..._time_dilation
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02-24-18, 09:26 AM
#44
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I think it's the opposite. Time runs faster the further you are from earth's center.
https://en.m.wikipedia.org/wiki/Grav..._time_dilation
https://en.m.wikipedia.org/wiki/Grav..._time_dilation
02-24-18, 08:42 PM
#45
Banned.
Riding uphill
No drugs.i ride uphill and it is hard. Why. Why can’t I just jackhammer along like on level ground. Physicists have not discovered the Graviton. I learned about that 40 years ago. They found the Bose particle. That is mass related. Mass distorts time. Seems there is no carrier for gravity. What we perceive may have a different cause than we thought.
Because I quit believing in gravity, I hit the hills harder because it is not as difficult as it seems. Perception. Perhaps oxygen depravation. Don’t know, got a job, ride my bike a lot. Maybe I belong homeless on the river trail, just chose to pay my mortgage, bills, and taxes. In California. Where it is mostly perfect everyday, the beach is close, and I can ski once in a while.
Because I quit believing in gravity, I hit the hills harder because it is not as difficult as it seems. Perception. Perhaps oxygen depravation. Don’t know, got a job, ride my bike a lot. Maybe I belong homeless on the river trail, just chose to pay my mortgage, bills, and taxes. In California. Where it is mostly perfect everyday, the beach is close, and I can ski once in a while.
Last edited by Cyclcist11023131; 02-24-18 at 08:55 PM.
02-24-18, 10:03 PM
#46
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Indeed. We are also free to comment on those posts, so long as our comments are within forum guidelines.
I am not making personal attacks or insulting the OP when I point out that he has made three basically meaningless posts and comes across as someone who does not know at all what he is talking about.
My impression is that the OP trying to create posts on topics with which he is totally unfamiliar. I do not know why.
I would suggest the OP write about his/her bikes or personal cycling experiences. So far, we have seen three posts---this one on "Efficiency," "Safety," and "How to fail at business by not really trying." (Whoops, I missed "Bicycle Technology Picture Book.”)
Every one of these posts strike me as not be honest ... as in, the person is not honestly seeking a discussion on the stated topics.
Again, I would suggest the OP post about his/her bikes and riding experiences. If the OP chooses to do otherwise, that is also fine.
If a person walked up to me at a party and said stuff like this I would politely walk away ... unless it was my party in which case I would ask they guy who invited him and why he was there.
This forum is sort of in between. So I want the guy to actually talk honestly about stuff he knows about .... and I will responds in the same fashion.
That seems fair and not unrighteous.
I am not making personal attacks or insulting the OP when I point out that he has made three basically meaningless posts and comes across as someone who does not know at all what he is talking about.
My impression is that the OP trying to create posts on topics with which he is totally unfamiliar. I do not know why.
I would suggest the OP write about his/her bikes or personal cycling experiences. So far, we have seen three posts---this one on "Efficiency," "Safety," and "How to fail at business by not really trying." (Whoops, I missed "Bicycle Technology Picture Book.”)
Every one of these posts strike me as not be honest ... as in, the person is not honestly seeking a discussion on the stated topics.
Again, I would suggest the OP post about his/her bikes and riding experiences. If the OP chooses to do otherwise, that is also fine.
If a person walked up to me at a party and said stuff like this I would politely walk away ... unless it was my party in which case I would ask they guy who invited him and why he was there.
This forum is sort of in between. So I want the guy to actually talk honestly about stuff he knows about .... and I will responds in the same fashion.
That seems fair and not unrighteous.
Or maybe he's really not sure how to use a forum.
HINT to the OP: Tell us a bit about yourself and your cycling CV.
02-25-18, 12:37 AM
#47
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Anyone who believes bicycles are more efficient in every situation hasn't watched a grand tour race climb with the world's fittest athletes grinding along slowly while tubby old guys dressed up like giant pandas and half naked vikings carrying giant foam rubber hammers trot alongside the cyclists blowing kisses, groping the cyclists and whatever other awful things crazy fans do on grand tours.
02-25-18, 12:50 AM
#48
Senior Member
Anyone who believes bicycles are more efficient in every situation hasn't watched a grand tour race climb with the world's fittest athletes grinding along slowly while tubby old guys dressed up like giant pandas and half naked vikings carrying giant foam rubber hammers trot alongside the cyclists blowing kisses, groping the cyclists and whatever other awful things crazy fans do on grand tours.
02-25-18, 12:59 AM
#50
Me duelen las nalgas
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Overall efficiency decreases somewhat as the grade increases while climbing, because you are propelling not only your own body weight, but the weight of the fully laden bicycle underneath you, which would be anywhere from an extra 20lbs to 60+lbs if you've got a loaded touring rig.