Recent content by okay

hi, can anyone tell me what is the meaning of number e,i mean how it is discovered ?why derivative and antiderivative of this function same?i know it is very practical property of it but where did we get this number? and another thing eulers formula, which is e^(i*pi)+1=0, i also can't...

thank u defennnder it made great sense.

i just want to know is it something special that this three partial derivatives working great to reveal these gradiant curl ..etc .or is it some thing good looking thing that appear in these equations as we try to determine curl, rotation.. so on?

hello every one, i am working on vector analysis and i have come across this definition of del operator.i don't understand where does it come from but it works great to determine rotation curl gradient or other stuff of a vector field.can anyone tell me how we are getting this magical operator...

ok.sorry for my english if it is not so clear, D H. i am going to try to express my problem in a more clear way. in the quote above i understand that the condition, needed to acomplish this experiment, is impossible to get. so if Newtons law (F=G*M1*M2/R^2) expressing the phenomenon in this...

(we need kind of condition that only two body of interest must be put in a space that completely isolated of other masses (by the way of gravitational effects of these masses) .only in this environment this formula can be experimented correctly ) but here u r missing a point , we need the...

what i figure here that these fundamental formulas so far that physicist discovered are nothing but a rough mathematical interpretation of the observations they made.only scale for phisical good jop is if they r working according to actions we r observing.

i see. here i want to say that to measure Newtons gravitational constant G, we need kind of condition that only two body of interest must be put in a space that completely isolated of other masses (by the way of gravitational effects of these masses) .only in this environment this formula can...

how can u state that we can neglect them? to be precise we must put in account all of them are'nt we?besides my question was about the roots of the formula there he states that this force exists between every body n if we want to calculate net force on a body we must calculate all of them.n...

proof of Newtons gravitational law!? hi every one, i am new in this forum n here is my first question that really bothers me for a long time we always take for granted the formula given by Newton F=G*(M1*M2)/R^2 do u have any proof that is really satisfing.n i don't understand why Earth is on...