reverse entropy

Broad Summary of Thermodynamics: Sometimes seeing the Bigger Picture helps you Put together the smaller pieces and connect the dots b/w Physics, Chemistry, and Biology. 


Zeroth law (concept of temperature)

0th law of thermodynamics basically says that heat flows from hot objects to cold objects to achieve thermal equilibrium.
Mathematically, if TA = TB, and TB = TC, then TA = TC. Where T is temperature.

First law (ΔE = q + w, conservation of energy)

1st law of thermodynamics is based on the principle of conservation of energy, and it basically says that the change in total internal energy of a system is equal to the contributions from heat and work.
ΔE is the same thing as ΔU, which is the change in internal energy.
Q is the contribution from heat
Q is positive when heat is absorbed into the system (ie. heating it).
Q is negative when heat leaks out of the system (ie. cooling it).
W is the contribution from work.
W is positive when work is done on the system (ie. compression).
W is negative when work is done by the system (ie. expansion).

Equivalence of mechanical, chemical, electrical and thermal energy units

If it’s energy, it’s Joules. It doesn’t matter if it’s potential energy, kinetic energy, or any energy - as long as it’s energy, it has the unit Joules.
Energy is equivalent even if they are in different forms. For example, 1 Joule of mechanical energy can be converted into 1 Joule of electrical energy (ignoring heat loss) - no more, no less.

Second law: concept of entropy

The 2nd law states that the things like to be in a state of higher entropy and disorder.
An isolated system will increase in entropy over time.
An open system can decrease in entropy, but only at the expense of a greater increase in entropy of its surroundings.
The universe as a whole is increasing in entropy.
ΔS ≥ q / T
q is the heat transferred.
T is the temperature in Kelvin.
For reversible processes ΔS = q / T.
For irreversible processes ΔS > q / T.
Real processes that occur in the world are never reversible, so entropy change is always greater than the heat transfer over temperature.
Because of the irreversibility nature of real processes, as long as anything occurs, the entropy of the universe increases.

How I got revenge against a compulsive cheater.

(warning: long story)

I apologize for wall-of-text and if this one is a little too technical. This involves a somewhat popular card-based trading game (MTG). I tried to strip out as many unnecessary details as possible to make it easy to read. Plus, I don’t remember them all.

I usually am not the one to take revenge since I’m risk-averse. However, in this case, I found it was the most logical thing to do since I knew ahead of time that the other guy was going to try and screw me.

There was this fellow in my high school. His name was David. He was one grade above me and he was a complete a**hole, a compulsive liar and a compulsive cheater.

Often times during lunch hour, students would get together at the tables to play card games and such. I usually got involved in these games as well. David did too, but not as often.

Keep reading

Create a story where the characters live in a world where something is fundementally different with reality and leave the reader to guess what it is. For example: entropy is reversed, gravity goes sideways, all people can read minds, etc.

God takes the worst of us, the most shattered and damaged and rebellious and prideful, and reverses our entropy into pulsing life. He sees a desert and says, “I see a garden.” God can take a miserable sinner like me and you and breathe something brand new into these jagged veins. This is the work of Christ, shaping us, connecting us, healing us || J.S. Park 🌿🌙🌾

I had an intriguing thought about Glynda Goodwitch’s abilities. Entropy is a physical quantity that measures the disorder in a system. Whenever we see Glynda use her powers, it’s to reverse local disorder - cleaning up the dining hall, repairing the collapsed street, etc. She doesn’t just “fix” things, she seems to rewind them to before they were broken. So maybe that’s her Semblance: local reversal of entropy. But this raises an interesting question. Ozpin, as far as I can tell, seems to be associated with time; so is entropy. 

There’s a classic question in physics arising from a mismatch between microscale and macroscale interactions. At a microscopic level, physical systems don’t prefer a direction of time. The equations work just as well “backwards” as “forwards.” But on a macroscopic level, time has a clear past-present-future flow. How do you define this direction? This is where entropy comes in. Entropy is an irreversible process. You can lower it locally, but the total entropy of the universe can only stay fixed or increase. Therefore, we can define the passage of time as “the direction in which entropy increases.” 

Or, more simply, we say that entropy is the arrow of time.

So if Ozpin is time, then Glynda is time’s arrow. And in this context that also makes her time’s weapon. It even sets her up to mirror Cinder, who is primarily an archer.

Bottom line, I’m hoping for Glynda busting out a bow in Volume 4.

physicsisqueer-blog  asked:

I bought "Opaque OTK with Corset Lace Top" socks, but I find that with my chicken legs they don't stay up well at all. Would you advise against garter straps? I'm worried that it could rip the lace.

While rough handling could most certainly put a hole in the lace top stockings, they are meant to be worn with garters. To prevent any snags or tears, make sure that you have no sharp edges on your nails or cuticles and that you put on some lotion beforehand.

Do not tighten the garter straps to within an inch of their lives as this may cause your garters to tear the stocking over time. If you’re having trouble keeping your thigh highs up with traditional four strap garters, try Rago’s Six Strap Garter Belt (currently sold out, so please sign up for restock notifications) to help redistribute the stress on the stocking cuff and keep them in place all day. 

Sock Glue! If you want the no-garters look, this is your friend. There is a learning curve at first to figure out how much you need and where to apply (on the inner and outer sides of your thighs are generally good, but everyone is different!), but once you figure out what works for you it’s pretty great. It’s also water-soluble and lasts for ages. 

Also, and this pains me to say because I love them, stay away from garters with suspender clips (the kind with teeth). They are meant to keep up sturdy, thick socks and not delicate stockings. 

Hope this helps! If you have any further questions about products, please feel free to email us at

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Hawking, twisted in his wheelchair, speaks in his computer-generated voice: “Where does the difference between the past and the future come from? The laws of science do not distinguish between the past and the future. Yet there is a big difference between the past and future in ordinary life.

"You may see a cup of tea fall off of a table and break into pieces on the floor. But you will never see the cup gather itself back together and jump back on the table.”

The film, run backward, shows the cup reassembling itself on the table. Hawking continues: “The increase of disorder or entropy is what distinguishes the past from the future, giving a direction to time.”


He knew that Hawking had once believed the universe would stop expanding and would shrink again, and entropy might reverse itself. Later Hawking said he was mistaken.


For years Lecter had teased the problem, wanting very much for Hawking to be right the first time, for the expanding universe to stop, for entropy to mend itself, for Mischa, eaten, to be whole again…Time. 

- Thomas Harris (Hannibal)