Thermodynamics are the Physics discipline that studies the flow of heat. So does the name say, right?
However, it might sound way too abstract for general understanding. 😱
Let me offer you a small spark, so we all follow! 😉
Think you are in Lithuania and you feel cold in your house during winter. ❄
Time to light on the hearth, right? 🔥
Well, technically your house is getting colder and you need to compensate with equal heat flow released, as the one that is flowing out. 🤓
There you are, you already knew the 0th, 1st and 2nd Laws of Thermodynamics!
Your house gets cold, as it tends to equalize its temperature with the surroundings'. (0th Law)
To keep your home warm and cozy, you need to compensate with equal amount of energy flow leaving the house. (1st Law)
And heat only flows from hot to cold sources! (2nd Law) Pitiful, right? Well, certainly happens too during Spanish summer. But, in this case, heat comes in!!🌡☀
In either case, winter in Lithuania or summer in Spain, one needs to fight against inertia. 💪
Now you just refreshed your Thermodynamics. 🤜🤛
I found this video really illustrating and wise with explanations. #Thermodynamics of Energy conversion are deeply analyzed, including the common point between #bond energy and external work. It is way too long to discuss it all, I will just highlight some key aspects.
In short, it states that bond energy could be transformed into other forms of energy by means of combining electrons at the outer orbital levels.
The way to think whether a reaction happens spontaneously or not, is by analyzing the combined effects of Enthalpy and Entropy, aka #Gibbs Free Energy.
Combustion is a typical spontaneous reaction from which useful work can be extracted.
For a reaction that does not take place spontaneously, say Hydrogen generation from plain water, an investment of useful work is required. The externally applied work can then drive the conversion.
This could also be read as a way to #store electrical energy in bond energy. Petrochemical companies are pushing hard for this, as they already have the infrastructure.
Bond energy can be ultimately released again, having kept stable the once instantaneous energy.
All #machines in the universe, including life, require a #external energy source.
#Energy can be found in Earth in fossil fuels, as has been typically done. Additionally, there is solar energy coming from our star. Nuclear power can be extracted from radioactive interactions. Wind is firstly provoked by external solar radiation.
Credits to Physics Videos by Eugene Khutoryansky
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