Engines: Crash Course Physics #24

About | Information | History | Online | Facts | Discovery

1. 7:42 That face tho
2. you sound lovely but it would be a lot better if you could slow down a bit. improved understanding!!!
3. I'm a simple engineer
   When I see girl do thermodynamics I love her.
4. I like your accent :)
5. I like trains
6. Shini, do you play Magic The Gathering? The new set, Kaladesh, is about invention and is inspired by India. I have a sense you will really like it.
7. Compilation Guy>>>> And I need a crash course on basic gymnastics and acrobatics that covers front- and backhandspring, front and back somersault, aerial, side-somersault and handstand.
8. I'm intellectually attracted to you! <3 #Physics
9. can you explain gyrscopic forces en where they come from?
10. before my summer vacation they were exactly sincronised with what i did at school. in the vacation they we don't do, so it's perfectly sincronized now too :)) helps me a lot, as this year we have a bad teacher
11. Steam (TM Valve corporation) is obviously the most important development in human history :p
12. she fitted all engineering and technological/industrial applications of thermodynamics of the last episode in less than 10 minutes.... too much information for a small amount of time = she spoke fast... as if she;s on a hurry..... .... now I knew that steam engines and refrigerators are machine cousins... :)
13. Thanks! The production value is great. However:
    
    At 05:00 you say that there is an isothermal process where heat is slowly added, but the animation shows lots of heat (Q_H) escaping. What gives?
    
    At 05:04 You say that the isothermal expansion is 1/2 AB. Shouldn't it be the entire path AB?
    
    At 05:15 you say "the temperature drops whilst the heat stays constant, which also makes the volume expand". Well this is misleading: a temperature drop would cause an isolated system volume to contract. However in a Carnot engine, the system is doing work on the atmosphere, converting internal energy into work, and dropping the temperature. It's best to say that the expansion work drops the temperature, not that a colder temperature causes an expansion.
    
    Also, when you keep saying "the heat stays constant", shouldn't you be saying "there is no heat flow" or something equivalent?
    
    At 05:40 you say "the heat doesn't change" but perhaps you should be saying that there is no heat flow, or the system is thermally insulated, or something else equivalent.
    
    The way you explain it sounds as if heat is a state property, when it's not.
14. Who is she???
15. The audio could do with a de-esser, or is it just me?
16. Nice job explaining the Carnot engine; better than my own lecturer did.
    I could listen to you whole day.
17. I spent an hour this morning reading about thermodynamic engines from a Physics textbook and still had trouble understanding. Then I watch this 10 minute video and immediately understand what's going on.
18. All I could think about during this whole video ... the theme music to back the the future and the train scene with different color smokes spitting out getting the train up to 88 MPH....
19. Is there a quantity to describe how well a real engine compares to a Carnot engine working across the same temperature range. Like actual efficiency/Carnot efficiency
20. Just wondering,is the 4 stages of the Carnot cycle somehow related with both the diesel and petrol engine compression and combustion cycles?