• 0 Posts
  • 15 Comments
Joined 3 years ago
cake
Cake day: June 11th, 2023

help-circle
  • because apparently we humans are all differently efficient in converting calories into watts.

    We’re not that different though. It doesn’t vary that much between people. It’s pretty universally 20-25% of energy gets converted into mechanical energy, with the other 75-80% lost as heat.

    What does differ is how mechanically efficient the bike is. A commercial gym stationary bike might only be 80% efficient at converting the energy put into the pedal down into the flywheel, and that is what gets read by the power meter. A high end race bike is above 95%.

    Due to the roughly 25% efficiency, the math of kilojoules to calories burned is almost exactly 1:1.

    Outside of a clinical lab where you get hooked up to a machine that reads the actual CO2 from your breath as you exercise, a power meter is the most accurate you’re going to get though.














  • Yeah that’s a big failing on the teachers, not explaining why you can’t cite Wikipedia. It’s not hard to explain “you can’t cite wikipedia directly because it isn’t a source. It’s just a collection of references, and you need to go cite the primary source, and here is where wikipedia lists their sources for each claim and how you can cite them”.


  • No encyclopedia is citable. They’re not primary or secondary sources.

    You can’t use tertiary sources in academic research because they’re just aggregation of references. You need primary sources whenever possible, and secondary sources when primary sources are unavailable.

    Which is where going down to the references and grabbing the primary sources there comes in handy, because you can cite those.