• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Tim Cooke
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Liutauras Vilda
Sheriffs:
  • Rob Spoor
  • Junilu Lacar
  • paul wheaton
Saloon Keepers:
  • Stephan van Hulst
  • Tim Moores
  • Tim Holloway
  • Carey Brown
  • Scott Selikoff
Bartenders:
  • Piet Souris
  • Jj Roberts
  • fred rosenberger

UGENT! watts and hours...

 
Sheriff
Posts: 3837
66
Netbeans IDE Oracle Firefox Browser
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator

Martha Simmons wrote:Now, am I right that Paul's post means that a 70 kg rider can output almost 10 times more power than his laptop consumes?


Yes, I'd say so. 25 W is not that much.

An interesting experiment might be to plug the switched-off laptop with empty battery to the kill-a-watt device, to see how much power is used when charging the battery. And then measure how long it takes until the battery is charged. These would probably be the conditions a rider would experience when recharging the battery, as I don't think the idea was to use the computer while riding.
 
Ranch Hand
Posts: 130
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Outstanding!

All Bert needs is an hour of pedal exercise. Ok, taking into account inevitable loss of energy during transmissions and conversions, Kathy would have to help.
 
reply
    Bookmark Topic Watch Topic
  • New Topic