Physics has the shape of water


So yesterday my author told me how you change the shape of your model to fit your system and simplify your problem. Well this looks complex, I know (and it is, believe me). But maybe our police-thief story can simplify it. 

(This is a story of how we make measurements using polar coordinates instead of Cartesian ones for certain systems.)

The thread goes like this. You have a thief called Bob who is swinging in a single plane. Behind him are two policemen, Axe and Yay. The problem is, these two policemen go only two ways, forward and upward. Given their restriction, they have to work together to catch this guy. That means to catch one thief, we need two policemen, so if there are a 100 thieves, we need 200 policemen.

Worried due to the inefficiency of the police of the society, the lawmaker appoints a committee. Their job is to find how to increase the efficiency of policemen. The committee studies the case and submits a report to the lawmaker. He analyses it and finds out that Bob is moving only in a circular direction. That means, he is not so cunning but actually very predictable. So he doesn't need any superhuman police. He just needs a police who can walk in a circle. He appoints DSP Phil who has a long career of moving in circles. Phil immediately starts his duty. He visits the site of crime and notices how long bob is. He sees that Bob is 1 m long. But Phil is not that long. So he changes the height of his shoe called Aar and matches his height with that of Bob. Bob is now troubled since he has no way to escape. Phil is as tall as him with the help of Aar and his hands can easily grab Bob.

The well-known theif Bob is now caught and our DSP Phil is now promoted for his excellent service in catching thieves who move in circles. Though Axe and Yay are good policemen, they are only good for those Bobs who run straight.

Comments

Post a Comment

Popular posts from this blog

How I wish mathematicians were normal people

As I was trying to understand my maths book, I came across the statement (below) and went on thinking and thinking 🧐. The statement: "Let R=Xî+Yĵ+Zk̂ be the position vector of any point in the tangent plane at P to the surface." Now.. What point? what tangent? Plane? And what surface? These random terms came flying from...vacuum? Uh, seriously very reader unfriendly. For some reason, academicians think it is ok to write unintelligible content.  Let me see how I would make my students understand this. "Girls and boys, close your eyes..and imagine a surface, a 3D surface. The shape? Just imagine a ball for convenience. We choose a point on it, dot it and name it P. Now extend this point (point P) in 2D and create a tangent plane. That is, imagine P spreading its wings in two directions so as to create a mat and hanging in air, on top of this ball, with just its belly button P touching the ball . N ow about this tangent plane: go left from the belly button and choose a p...
Read more

How operator p identified her child

Now we are wondering about our equation p̂ |Ψ⟩=p₁|Ψ₁⟩ Let's imagine |Ψ⟩ is the headmistress of Ramanujan public school. Now what about the symbols like | and ⟩? Well, they are the symbols of her authority as a headmistress. One is her large bun and the other is a large stick. One day, a parent named Ms. p̂ approaches the headmistress |Ψ⟩. Now why does p has a hat on her head. Let's say that is so since p "goes with an appeal to |Ψ⟩". So whoever has a request gets a hat on head 😉. What does she say to the headmistress? She says, "dear headmistress, since today is the last working day, we have planned a trip to Veegaland and will be leaving this evening. And so I want to pick my son." The school has hundreds of children and the headmistress |Ψ⟩ wouldn't know who is the child of Ms. p̂. So she asks, "what is his name?" Ms. p̂ tells her, his name is p₁. A clerk then goes to the class and picks a boy named p₁, the son of Ms. p̂. And this is how Ms....
Read more