The discussion centers on the relationship between energy (E), mass (m), distance (d), and time (t) as expressed in the equation E=mc². By substituting c=d/t into the equation, participants explore the implications of E=m×d²/t², questioning whether energy is inversely proportional to time. The consensus is that while E does not directly relate to time, it possesses a dimension of ML²T⁻², similar to kinetic energy (KE=1/2 mv²). The conversation emphasizes the importance of dimensional analysis in understanding these relationships.
PREREQUISITESStudents of physics, educators, and anyone interested in the foundational concepts of energy, mass, and their interrelationships in the context of relativity.
Actually, in Dale's example, I just wanted to say that 2 can be used with h also instead of g. That makes no conceptual sense.russ_watters said:No. In particular, you said in your first sentence that you understand proportionality, when clearly you do not*. And now that your error in understanding how proportionality works is shown plain, instead of learning from that, you want to ignore the issue. I'm not sure what more we can do for you if you won't correct errors in your understanding that you know exist.
*Note: it is actually worse than even that: Dale's post contained some basic algebra that you didn't understand, which was why I needed to simplify it for you.
Of course it can be used with h also. As I said, f is proportional to g and f is proportional to h. Therefore if you double g you must double f (not 1.5 times) and if you double h you must double f. That is what it means to be proportional to both g and h.Deepak K Kapur said:Actually, in Dale's example, i just wanted to say that 2 can be used with h also instead of g. That makes no conceptual sense.
No.Deepak K Kapur said:In your case doesn't h get unnecessarily doubled when g is doubled?
Fair enough. My recommendation to you at this point is that because you don't understand basic math, you are nowhere close to being able to understand how math relates to reality. You should therefore start by taking some basic math courses (algebra, geometry, trigonometry, calculus), then follow them up with some basic science groundwork courses that show how math is used in science.Deepak K Kapur said:Anyway, thanks a lot. You people have done a lot for me.
Actuallly, i just wanted to explore the relation of mathematics with reality...