Measuring length, time, mass, weight, volume and other simpler things are easy to understand and there are many ways to measure them.
Like i can use a meter scale, hand, and any other things to measure length and assignt to it any arbitary unit. And i know these ‘lengths’ are interconvertible. I have an intuitive idea what length is. But i cant understand how they measure charge or other things.
I want a detailed explanation of how temperature, charge, and electric current are measured.
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Temperature is the easiest one. In a general sense, temperature is how much energy something has. If it has a lot of energy (so the atoms of the substance are moving around a lot) the temperature is hot. This was initially measure dusting mercury in a thin tube. When mercury gets more energy, it expands. This pushed it up the tube. If it gets colder, it contracts and sinks down the tube. You can measure temperature based on how much heat the mercury is absorbing or losing.
Electric charge is a little more complicated, because it’s just a property of matter. Some subatomic particles are charged, and some aren’t. We measure electric current by calculating the number of charged particles that move across a wire per second. This can be measured using magnets. One of the properties of charged particles is that they create a force when they move. You can measure this force using magnets.
The charge one is simplified by a significant amount, sii encourage you to do research to get a better understanding if you’re interested.
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