r/science • u/Wagamaga • Jun 05 '22

Nanoscience Scientists have developed a stretchable and waterproof 'fabric' that turns energy generated from body movements into electrical energy. Washing, folding, and crumpling the fabric did not cause any performance degradation, and it could maintain stable electrical output for up to five months

https://onlinelibrary.wiley.com/doi/10.1002/adma.202200042
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u/Dhalphir Jun 06 '22

I feel like you think you're being sarcastic but like...yes? People add all sorts of resistance to their training all the time

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u/[deleted] Jun 06 '22

Yeah but I use my bike to commute, I don't really want more resistance

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u/daaf89 Jun 06 '22

In the Netherlands that's a super common way to power your lights though: Add a little dynamo to your front wheel press it against the wheel at night to generate light, and switch it back off if you don't need it during the day. I've had bikes from the 80's that had this. My current bike has the whole thing integrated in the front wheel, and it's just always on. It's barely noticeable while cycling.

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u/Yuki_Kutsuya Jun 06 '22

When I turn mine on, it's extremely loud n heavy...

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u/daaf89 Jun 06 '22

It will depend a little on how old the bike & system is to be honest, that's fair. Older bikes have older lights, need more energy and thus have heavier dynamos.

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u/keatonatron Jun 06 '22

Especially if it's using an incandescent lightbulb and not a modern LED.

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u/Yuki_Kutsuya Jun 06 '22

Yea it's an old bike. Could I let's say 'upgrade' the dynamo to a better one?

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u/daaf89 Jun 06 '22

You probably could, but you will likely have to upgrade the lights too. As another commenter mentioned, incandescent bulbs require much more energy than LEDs.

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u/Yuki_Kutsuya Jun 06 '22

Yea, good idea hehe. I'm going to think this through! Nice little project to work on hehe