destructdisc@lemmy.world to Bicycling@lemmy.worldEnglish · 5 days agoWe created an incredibly efficient method of transport and then most of us abandoned ityoutube.comexternal-linkmessage-square14linkfedilinkarrow-up126arrow-down11file-text
arrow-up125arrow-down1external-linkWe created an incredibly efficient method of transport and then most of us abandoned ityoutube.comdestructdisc@lemmy.world to Bicycling@lemmy.worldEnglish · 5 days agomessage-square14linkfedilinkfile-text
minus-squareJubilantJaguar@lemmy.worldlinkfedilinkEnglisharrow-up2·5 days agoVideo so text summary needed.
minus-squareambitiousslab@feddit.uklinkfedilinkEnglisharrow-up7·5 days agoThe person in the video shows this graph, or a very similar one. She highlights the different categories between swimmers, fliers, runners and vehicles. Then, she reveals the “human on a bicycle” entry on the graph and says that humans on a bike are much more efficient than anything else.
minus-squarefaultyproboscus@sh.itjust.workslinkfedilinkEnglisharrow-up1·4 days agoI think the math checks out for this graph. If a human on a bicycle consumes 0.15 calories per gram per kilometer, then a 100 kg person would be: 100000g x 0.15 calories = 15,000 calories = 15kcal I’m guessing these numbers are for a racing bike on a flat stretch of smooth road where you don’t need to brake or accelerate.
minus-squarecaptainlezbian@lemmy.worldlinkfedilinkEnglisharrow-up2·5 days agoDamn salmon are efficient
minus-squareJubilantJaguar@lemmy.worldlinkfedilinkEnglisharrow-up2·5 days agoVery interesting. I wonder why a horse is so much more efficient than a rodent. Something to do with size and limb mechanics I guess. Would be nice to know what the dot underneath “automobile” is, I’m guessing “bus”.
Video so text summary needed.
The person in the video shows this graph, or a very similar one.
She highlights the different categories between swimmers, fliers, runners and vehicles.
Then, she reveals the “human on a bicycle” entry on the graph and says that humans on a bike are much more efficient than anything else.
I think the math checks out for this graph.
If a human on a bicycle consumes 0.15 calories per gram per kilometer, then a 100 kg person would be:
100000g x 0.15 calories = 15,000 calories = 15kcal
I’m guessing these numbers are for a racing bike on a flat stretch of smooth road where you don’t need to brake or accelerate.
Damn salmon are efficient
And delicious
Very interesting. I wonder why a horse is so much more efficient than a rodent. Something to do with size and limb mechanics I guess. Would be nice to know what the dot underneath “automobile” is, I’m guessing “bus”.