"A pull or a push is called a force"- that is what my class VIII Science book said. Then there was only one force: applied mechanical force, i.e. push or pull. But now, when I am in standard XII, I have encountered many forces: electric force, magnetic force, gravitational force, applied mechanical force, etc. But, even after knowing almost all forces, have you ever given a thought that "WHY" does a force act? WHAT makes a force to act? You will surely know it by the end of this post!
According to Wikipedia, "In physics, a force is any interaction which tends to change the motion of an object." There are four fundamental forces- gravitational force, electromagnetic force, strong nuclear force and weak nuclear force. While all these forces have different characteristics and arise due to different interactions, they all are FORCES after all. And this made me think that since they all are forces, they should have a common cause.
But, the problem now was to find "an" answer. What one thing is common between a massless charge and a chargeless mass? And I did get an answer: ENERGY! A massless charge has its energy just like a chargeless mass does. Just the difference is that a chargeless mass possesses energy by virtue of its mass and the massless charge possesses energy by virtue of its charge. We all are nothing but energy existing in different forms.
Now, from here, whatever I say is what I am trying to conclude and propose.
I think that there are different kinds of energy or rather different components of energy. Two energies should have something in common to interact with each other. For example, an electron and a proton have energy by virtue of their charge, their mass and their spin. Thus, there is a lot in common in the energies of a proton and an electron and so, they can interact. A ball and I have energy by virtue of our mass. Hence, I can interact with the ball, i.e. throw it, catch it, etc. Or, should I say, that I can APPLY FORCE on the ball! EXACTLY! If energy of one object can interact with energy of another object, then the two objects will exert force on each other.
Thus, I will now answer the question I had written earlier: What is the CAUSE of a force? I think, that the cause of a force exerted by an agent on an object is the interaction of the energy of the agent and that of the object. The energy of a proton and an electron are able to attract due to some inherent similarities and hence, a proton is able to exert a force of an electron and vice-versa. This also validates Newton's Third Law: To every action, there is an equal an opposite reaction. This can be explained by a simple statement: You cannot touch without being touched! To understand this, let us take an example. Consider two objects A and B which have energies that can interact with each other. Now, A's energy is interacting with B's energy.
This region of interaction can be considered as the common region of A and B. Now, in this common region, not only the energy of A interacts with that of B, but also, energy of B interacts with that of A! Hence, B will exert a force on A as well. And this itself, is the Action Reaction Law. Hence, this law should be valid in all circumstances where the energies of two bodies are able to interact with each other. Also, if these two bodies are taken FAR AWAY from each other, their energies will not be able to interact, and hence, they will not exert force of each other. This is exactly what is seen in the case of gravitational forces or coulombic forces.
By this, I also imply that if two objects have energies which have causes which are completely independent of each other, then they CANNOT interact. Thus, if I assume that my energy is completely different than yours, then I cannot interact with you, i.e. I cannot touch you or hit you or push you!
According to Wikipedia, "In physics, a force is any interaction which tends to change the motion of an object." There are four fundamental forces- gravitational force, electromagnetic force, strong nuclear force and weak nuclear force. While all these forces have different characteristics and arise due to different interactions, they all are FORCES after all. And this made me think that since they all are forces, they should have a common cause.
But, the problem now was to find "an" answer. What one thing is common between a massless charge and a chargeless mass? And I did get an answer: ENERGY! A massless charge has its energy just like a chargeless mass does. Just the difference is that a chargeless mass possesses energy by virtue of its mass and the massless charge possesses energy by virtue of its charge. We all are nothing but energy existing in different forms.
Now, from here, whatever I say is what I am trying to conclude and propose.
I think that there are different kinds of energy or rather different components of energy. Two energies should have something in common to interact with each other. For example, an electron and a proton have energy by virtue of their charge, their mass and their spin. Thus, there is a lot in common in the energies of a proton and an electron and so, they can interact. A ball and I have energy by virtue of our mass. Hence, I can interact with the ball, i.e. throw it, catch it, etc. Or, should I say, that I can APPLY FORCE on the ball! EXACTLY! If energy of one object can interact with energy of another object, then the two objects will exert force on each other.
Thus, I will now answer the question I had written earlier: What is the CAUSE of a force? I think, that the cause of a force exerted by an agent on an object is the interaction of the energy of the agent and that of the object. The energy of a proton and an electron are able to attract due to some inherent similarities and hence, a proton is able to exert a force of an electron and vice-versa. This also validates Newton's Third Law: To every action, there is an equal an opposite reaction. This can be explained by a simple statement: You cannot touch without being touched! To understand this, let us take an example. Consider two objects A and B which have energies that can interact with each other. Now, A's energy is interacting with B's energy.
By this, I also imply that if two objects have energies which have causes which are completely independent of each other, then they CANNOT interact. Thus, if I assume that my energy is completely different than yours, then I cannot interact with you, i.e. I cannot touch you or hit you or push you!
Now, as you can see here, Higgs Boson has mass ONLY, while a gluon and a photon are entirely massless. From the following data (image from Wikipedia) we see that nothing is common between a Higgs Boson and a gluon or a photon. Meaning to say, that the Higgs Boson has mass only and so its energy is only by virtue of its mass, whereas, a photon and a gluon have spin only and hence their energy is only by virtue of their spin. Hence, according to my concept, since the energy by virtue of mass will be entirely different from the energy by virtue of spin, so, a Higgs Boson should not be able to interact with a gluon and a photon. Thankfully, yes, quoting Fermilab: "The Higgs particle does not interact with massless particles, such as a photon or a gluon. " This might very well prove my theory about the cause of force.
To conclude, what if we make an object whose energy is such that it cannot interact with the energy of light? Then, the light would neither reflect nor refract. Hence, that object will be invisible! What if we make a suit which envelops our energy and prevents it from interacting with Earth's energy? Then, we will not feel Earth's gravity, in other words, we will fly! Thus, there may exist some forms of energy that cannot interact with light and hence are invisible, but they are able to influence us, interact with us and guide us and they are constantly near us, seeing us, and may be even controlling us, but we never get to know! But surprisingly, we do have a name for such kind of energies! What is it? I will tell you in my next post.
To conclude, what if we make an object whose energy is such that it cannot interact with the energy of light? Then, the light would neither reflect nor refract. Hence, that object will be invisible! What if we make a suit which envelops our energy and prevents it from interacting with Earth's energy? Then, we will not feel Earth's gravity, in other words, we will fly! Thus, there may exist some forms of energy that cannot interact with light and hence are invisible, but they are able to influence us, interact with us and guide us and they are constantly near us, seeing us, and may be even controlling us, but we never get to know! But surprisingly, we do have a name for such kind of energies! What is it? I will tell you in my next post.
