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The Force can be said to be the most magical concept in Star Wars. Many people think that the Force is just a fictional setting in the film, and even the screenwriter can't tell what the Force is. However, if we regard the Force as an advanced ability to manipulate the electromagnetic field, we can make a reasonable explanation for the Force.

/ tr. by Stephen Kelly (Stephen Kelly)

Translation | Li Shijie

Editor | Chen Qiang

The original article is published in Science focus, No. 11, 2023.

In the sci-fi movie Star Wars: new Hope (Star Wars: A New Hope), Jedi Master Obi-Wan Kenobi believes that the Force is "an energy field created by living things that surrounds us and permeates our bodies, with the energy that condenses the entire galaxy."

This statement is more poetic than the explanation in Star Wars prequel: the Phantom Menace (Star Wars: The Phantom Menace). Because in this prequel film, it seems that every Jedi Knight suffers from a serious parasitic disease, or rather, the Force of the Jedi Knight comes from a microbe called midi-chlorian.

"parasites can change or determine the behavior of hosts, which has been confirmed by scientific research," said Patrick Johnson, a physicist at Georgetown University and author of The Physics of Star Wars. "in theory, parasites can give hosts abilities they don't have."

However, Johnson believes that a more reasonable explanation for what the Force is is that the Force is an advanced ability to manipulate electromagnetic fields.

Why can the Force be used to separate objects? "the basic principle of an electromagnetic field is that any object with a charge, such as protons and electrons, produces an electromagnetic field around it. According to the principle of electromagnetic interaction, these particles either attract or repel each other." Johnson explained.

This explains why a Jedi such as Ahsoka Tanoh, the protagonist of the American TV series Star Wars: Ahsoka (Star Wars: Ahsoka), can move objects. "for example, if I was hung upside down in an ice hole on the planet Hoth and wanted to get a lightsaber that fell on the ground, then, in theory, I could put a strong positive charge on my hand to attract the electrons in the lightsaber," Johnson said. to pull the lightsaber towards me. "

However, even if we do have this ability, we must focus on the target object in the process of moving the object. Otherwise, you will eventually attract all kinds of things.

Why can the Force control other people's thoughts? The most powerful and mysterious aspect of the Force is that the Jedi can use it to control the minds of others. If the Force is the ability to manipulate the electromagnetic field, how does the electromagnetic field play a role in this process?

"We have a lot of neurons in our brain that communicate with each other through electrical signals," Johnson said. In theory, a Jedi who is well versed in brain science can apply very precise electromagnetic fields to control the discharge of certain neurons. For example, the idea of 'this is the robot I'm looking for' is generated by neuron 1, and the idea of 'this is not the robot I'm looking for' is generated by neuron 2. If I can suppress the discharge of the No. 1 neuron in your brain and let the No. 2 neuron discharge at the same time, then the idea of 'this is not the robot I'm looking for' will come to your mind. "

However, Johnson also made it clear that the possibility of achieving this kind of mind control is slim. Because the human brain has about 86 billion neurons, "it is very difficult to manipulate a single neuron with such precision, or to find out which neurons need to be controlled." this requires us to have a very deep understanding of the human brain, but we can't do that yet. "

Even so, scientists have not given up trying. Johnson told us that in a 2008 study, subjects were asked to press a button with their left or right hand and their brain activity was recorded. "eventually, the researchers found out what the pattern of brain activity was before the subjects pressed the button with their left or right hand," Johnson said. more surprisingly, by analyzing this brain activity, the researchers were able to predict which hand they would press the button with even seven seconds before the subjects made a choice. "

Perhaps manipulating these brain activities can influence the choices the subjects make, just as the Jedi control the minds of others.

Conclusion if the Force is a force that controls the electromagnetic field, then it is not completely impossible.

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