They say prior to 2018 the seven(classified) base units were defined and the rest derived units were constructed using powers(combinations) of these base units. But with time we are now after 2018 are able to construct units of ANY quantity using the fundamental constants of nature and hence as...
Ok so it is only the units which had been arbitrary categorized, the quantities (dimensions) are actually all not so fundamental; there can be too much dependence of certain dimensions on another depending on the system of unit chosen the way time can be written in terms of length(with c as...
Ok it would be interesting, I hope it will give a good insight to my quest.
With just length as dimension(physical quantity) I can form dimensions of mass, electric charge, temperature? 😱
You are right but many of textbooks made me think so.
I like (digest) what you said in the later part of this post. Also your saying there are no fundamental quantities is now making some sense to me but I have in one the textbooks which is considered quite authentic they use terms like fundamental quantities and fundamental units in similar sense...
Do you mean that we definite fundamental quantities completely arbitrary but we still have the authority to connect the unit of our one of the defined fundamental quantities with our another defined fundamental quantity?
😹 I am not demanding it but to me it seems more absurd to first define something and then go against your own definition. For example if I say only those 7 colours are to be put in a box A which are found in a rainbow and any colour which is formed by mixing any combination of more than one...
This is too shocking for me. What about definition of fundamental quantities then? What is then the meaning of classifying physical quantities into two categories of fundamental and derived when just like a derived quantity and fundamental quantity can also be expressed in terms of other...
Ok so as of now distance and time are not completely distinct concepts. For a given value of time there is definite distance that light travels means if we just assign a unit for time, the unit of distance pops up itself and c is the conversation factor. I think it's like a deeper understanding...
Hello all,
Textbooks define fundamental or base quantities as those quantities which are not expressed in terms of other quantities and they define derived quantities as those quantities which are expressed in terms of other quantities. I have the basic understanding that the choice of a set of...
Hi all
These days I am refreshing my knowledge on the concept and measurement of temperature. One way of defining temperature is in terms of how it is measured. This can be done by observing the variation of some properties which vary linearly with the hotness(temperature) of bodies. I studied...
Hi all!
These days I am brushing up my knowledge on EM Waves. I begin with the introductory level but I don't mind to engage in an advanced treatment of the topic.
At the very basic level I had a high school book, the mentions straightway that if the wave carries with it an energy U, it posses...