How the thing that no one actually saw acted: ….. It is the job of a great detective to investigate this. As amateurs, we may be wrong or deceived.
In order to prevent this from happening, you need to calmly and carefully picture the scene in your mind, one by one, without fail, and finally make it clear enough to make a movie about it.
The killer is the Molecule. Let’s try to do this as well as Detective Sherlock Holmes.
===== The main story =====
The incident happened inside the syringe. The incident was that Mr. Shizuka Yotsuba was casually holding the air-filled syringe in his hand when the piston rose quietly.
‘Holmes, no matter how much time you have, you’re not going to work on something that can’t be called an incident like this.
It’s not really a case, but it’s the ambiguity of the air that plays the leading role. ─ It’s not a case at all, but it’s the ambiguity of the air that plays the main role, and at least it’s a good exercise for your brain. It’s not that I’m not interested in the case. By the way, has Mr. Yotsuba Shizuka said anything else that might give us a clue?
‘He said he noticed later that the end of the syringe had a rubber on the end that was blocking it. He took his hand off of it, and after a few moments, the piston dropped back down to its original position.
Both of those things show that no air got out of the syringe and no air got in from the outside. So all we have to know is that we only have to think about the air in the syringe.
Then he turned around.
‘Oh, you look so boring. Since you’ve probably figured it out by now, I’d like to hear your theory, Watson.
Of course I know that the culprit is the air in the syringe. Of course I know that the culprit is the air in the syringe, which contains not only oxygen and nitrogen but also space. So I think about it this way. Molecules don’t change in size and weight, so the size of the space expands and pushes the piston up. The “pressure” is the force that pushes the piston up. When a molecule is pushed up, it is called a force.
‘Excellent, if I weren’t a detective, I’d think you were a genius,’ he said, ‘but, Watson, there are serious flaws in your theory. But, Watson, there is a serious flaw in your theory. Space, it has no weight, it’s nothing. It’s just an empty space. How could that space be used to move a piston? A rocket isn’t going to be crushed by the amount of space around it, son. And if there was space, where did all that extra space go into the syringe?
Maybe space is as easy to get through as the glass of a syringe. Or maybe it just pops up naturally.
‘That doesn’t sound promising, does it? First of all, that doesn’t explain why it will return to normal if you let go. You have a better idea. If the culprit isn’t space, then what’s left is molecules. We can ignore the force of Mr. Yotsuba’s hand outside the syringe. The hand merely served to warm the syringe and the air. So how did the molecule act?
The molecules are heavy and full of space around them, so they can move freely, and when they hit the piston, they can move it in the same way that Brownian motion makes a particle move. That’s why the piston was hit by enough oxygen and nitrogen molecules to keep it from breaking.
‘You’re very good at guessing what molecules are doing, Watson, even though you haven’t seen them move. Is there anything you still don’t understand?
‘Space doesn’t change after all, does it, Holmes? And it’s the force of the molecules hitting the piston that’s working on the piston, not the pressure?
The space is obviously increasing. Space is obviously increasing, because the total volume is increasing. Space increases and decreases without putting anything in, because space is not that thing but an empty space. Space is ‘not things but a vacant space. Space is not that thing, but an empty space. But it doesn’t help to push the piston up, though. Rather, it’s pushed up, and that’s why there’s more empty space. As for the pressure thing, that’s been worked out too. It’s true that each molecule is a force that hits you. But you don’t think ten or twenty of those little molecules are going to push up a piston. Billions and trillions of molecules are hitting together. When you look at all those forces as a whole, you use the word pressure.
I see. But it seems strange that just by warming them up, molecules can suddenly start moving.
Not ‘suddenly’. I just left it there, and it was moving around and hitting the piston. I just didn’t notice it because I was always hitting it with the same intensity. This is evident from the fact that the piston doesn’t go all the way down and is balanced somewhere along the way. If you want the piston to go all the way down to zero, you need to cool it down further. I read in one of these magazines the other day that a man named Kelvin needs to lower the piston all the way down to -273 degrees to bring it to zero volume and pressure.
So when you warm up the piston by hand, you think the molecules hit harder when they’re pushed up.
I don’t have time to think about it. I haven’t seen it myself, but I can say with certainty from a variety of evidence that ‘the higher the temperature, the faster the molecules move. I don’t see it myself, but I can say with certainty from a variety of evidence that the molecules move faster when the temperature is increased. And it’s only at -273°C that they stop moving.
‘This solves the problem, doesn’t it, Holmes? It’s always so brilliant.
It was just a matter of using a little common sense, Watson. It wasn’t much of a brainstorming exercise for me, either. You and the eighth-grader could have solved it if you hadn’t given up halfway through or said anything out of the ordinary. Molecules are a pompous reluctance to show themselves, but they’re always on the move and have no special characteristics except that they speed up when the temperature rises. They are just grains. Take the fiddle from the couch, Watson. You can’t even get enough of the boredom: …..
A short time later, Shizuka Yiba sent in a few words of thanks and the following question
‘What happened the other day was when I put air in the syringe, but I suddenly realized that I had to try it by putting water in it. But this time I warmed it up, and the piston didn’t lift. Just check this out as well.
Holmes’s reply was a simple one.
We are convinced from various lines of evidence that there is some force at work that does not allow the molecules to move freely in liquids and solids. However, please note that molecules still move in liquids and solids. And from now on, they’ll have worked themselves out.
This syringe piston thing could be explained by making a movie of what it looks like, or we could make a model of it hundreds of millions of times larger than it really is.
– Q.E.D. -.