Firstly, the penguin.
Penguins are awesome creatures who amaze me by their surprisngly good understanding of the transfer of thermal energy. HAHA.
I know you all will ask why, so I shall explain myself.
Okay, so everyone knows that penguins have dense feathers that can trap a lot of air in between them to keep them warm right. Not forgetting the thick layers of fats they have under their skin, which provide a good thermal insulation to wistand extremely cold temperatures. But you know what, what amazes me is the fact that penguins actually behave in a certain way. They actually huddle close together, in big packs, to protect themselves from the cold as huddling reduces the surface area of the body exposed to the extremely cold weather and this reduces heat loss through convection, conduction and even radiation!
AMAZING EH?
Haha oh and secondly, this amazing thing called the thermo-flask.
HAHA YEAH.
I find it really impressive! :D
Really shows the creator/inventor's understanding of the transfer of thermal energy! HAHA.
1) The stopper is made of plastic cause plastic is a poor conductor of heat.
2) Conduction through the trapped air above the liquid is very minimal since air is a very poor conductor of heat
3) Conduction and convection through the sides of the flask areprevented by the vacuum between the double-glass walls of the flask.
4) To minimize heat loss through radiation, the walls of the glass are silvered so as to reflect the radiant heat back into the hot liquid. Convection and evaporation can only occur when the plastic stopper is removed during use.
Anyways, okay to sum up this chapter again, :D
I would like to say that after not only studying this chapter but also doing a blog on this chapter,
I have come to realize how this chapter is really useful and has so so so many applications in real life, reagring heat/thermal energy and the things around us :D
Haha, cool.
And so I shall end my physics project here, this blog is completed :) :D
IT IS DONE!!!
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