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2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

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1456665 No.1456665 [Reply] [Original]

Human energy and energy related to the human body.

It takes 35 watts to power a CD player.
That's 30094.6 Calories per hour.

You'd have to eat roughly 115.8 servings of Ben & Jerry's Original Fudge Brownie ice cream to power a CD player for an hour.

If we were to figure out how to use the human body to generate electricity, we could power a 9W LED bulb for 10 minutes with 1289 calories. It could be a great way to lose weight.

To compare, the average male, according to my online calculator, uses 10076 calories to walk 100 miles at 3 mph. That's roughly the same amount that a CD player uses in 20 minutes.

In comparison, our bodies are incredibly efficient, and the machines we make are incredibly inefficient.

>> No.1456671

I know!!!!

How about...
We attach generators! To bycicles!!

>> No.1456679
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1456679

>It could be a great way to lose weight.

>> No.1456682

op's pic made me a little sad.

>> No.1456684
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1456684

>my face when OPs pic

>> No.1456687

learn the difference between Calories and calories

>> No.1456692

Are you aware that what's written on the food packaging is actually KILOcalories? It says calories, but it's actually kilocalories.

The correct calculations.
35 watts in 1 hour is 126 000 joules.
1 serving of Ben and Jerry's is 230 KILOcalories, which is 960 000 joules.

>> No.1456694
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1456694

>My Rival. My hero. My father.

>> No.1456695
File: 274 KB, 963x2099, 1279360026375.jpg [View same] [iqdb] [saucenao] [google]
1456695

i think the author of this pic was thinking along similar lines.

>> No.1456702
File: 128 KB, 1954x1783, Trollface_More_HD.png [View same] [iqdb] [saucenao] [google]
1456702

>calories

>> No.1456754

>>1456665
> are incredibly efficient
Holy dicks OP, When I firsrt came across your thread I did not read it. Then some fag posted a graph so then I read it and saw this.

The human body is increidbly INEFFICIENT.
It runs at anywhere near 7-20% efficiency. Thats about as much as a AC unit

>> No.1456786

>>1456754 really?

>> No.1456788

>>1456665
Your pic is beautiful.

>> No.1456800

http://humanbatteries.com/

>> No.1456811

>>1456754
Can I read any papers or whatever on that?

>> No.1456814

Dietary or food calories spelled with a capital C are kilocalories

35W=30.11Calories/hour

>> No.1456823

>My Rival. My Hero. My Father.
I just realized how much I take my parents for granted.

>> No.1456828

>>1456786
>>1456811
A basic bio course is going to tell you much the same. I don't have my notes on me, but IIRC much of the input is converted to heat or remains in waste.

>> No.1456860

>>1456665

Food calories are actually kilocalories.

Gigantic fuckups like yours are why we use metric units like joules now.