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Articles: Devotion | In quest of infinity - 9
- Prof. venkata ramanamurty mallajosyula
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OK, so where does all that leave us right now? What are the questions we have to consider next? Before I get on to that, I must also take stock of what we have learnt about the microscopic world; remember, we are trying to connect the macro and the micro, and get some idea of how the seed and the offspring are connected. So, a quick revision now about the micro-world. We saw that as we go deeper and deeper, we find that the building blocks of every level are made up of the building blocks of the next lower level. For example, molecules are made up of atoms, which are smaller than molecules. The important point is with 92 different types of atoms, one can build up billions and billions of different types of molecules. Atoms in turn are made up of the atomic nucleus and electrons. Atomic nuclei in turn are made up of neutrons and protons; protons and neutrons are in turn made up of quarks. Proceeding in this manner we came up to the point where we now believe that basic building blocks of all matter are quarks and leptons, making up two families so to speak [see QFI - 06]. For your ready reference, I am reproducing below a figure you have already seen.
This repeation presents the members of the two basic groups, quarks and leptons, that are the basic building blocks, as we understand now. Anything more basic? May be but as of now, people are not betting on it.
Well, there are these particles, and the question now becomes how do they interact with each other? What are the forces that dictate this interaction? I identified four basic forces: They are: 1) gravity, 2) the strong force, 3) the electromagnetic force, and 4) the weak force. I also told you something about “mediator particles” that makes these forces work, and the relative strengths of these four forces as we know today.
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