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Environment & Energy

OKIsItJustMe

(19,978 posts)

3. Indeed… compare the last two lines

Reply to mahatmakanejeeves (Reply #2)

Mon Aug 29, 2016, 05:22 PM

Aug 2016

Last edited Mon Aug 29, 2016, 05:54 PM - Edit history (1)

The electric shaver and CFL bulb supposedly take significantly different “watts per hour” but would require the same number of hours of pedaling.

In the 80’s Phillip Morrison expressed it in terms of JDU’s (“Jelly Donut Units.”) Skip forward to 21:00 (or watch the whole thing, it’s great!)

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If Tour de France Powered the World [View all] mahatmakanejeeves Aug 2016 OP

"watts per hour"? "watts of power per mile"? The writer hasn't a clue about units muriel_volestrangler Aug 2016 #1

I was thinking that she probably meant watt-hours for typical use. mahatmakanejeeves Aug 2016 #2

Indeed… compare the last two lines OKIsItJustMe Aug 2016 #3

Even if they got the units sorted out, that 30 (Wh?) is equivalent to 2 (hrs of peadlling?) muriel_volestrangler Aug 2016 #4

The chart is troublesome. mahatmakanejeeves Aug 2016 #5