Ron Zamir

6 Questions 2 Answers 0 Followers

Questions related from Ron Zamir

How can I find an expression for the fundamental solution to the diffusion equation when the center (mean) of the solution is diffusing randomly?

The fundamental solution to the Diffusion Equation in one dimension is c(x, t)=1/(4(pi)Dt)^1/2 e^( - (x - xo)^2/4Dt) , where D is the Diffusion constant of the diffusing particle, t is the time,...

07 July 2018 1,165 1 View

Who first discovered the following well-known result in Classical Mechanics?

Who first discovered that for a two particle elastic collision in 2 dimensions where the mass of the two particles is the same, the angle between the two final velocity vectors equals 90...

11 November 2017 8,135 18 View

Are there any results known about the survival probability for 3 particles that diffuse in 2d or 3d and coalesce when they meet?

Imagine three identical particles, each having the same radius and diffusion constant. The particles diffuse isotropically in 2d or 3d space and each of their concentrations as a function of space...

10 October 2017 9,753 0 View

How do you solve the Diffusion equation when the spatial dimension is an integer which is greater than 3?

I am interested in learning how to solve the Diffusion equation for integer spatial dimension that is greater than 3. In particular, I would like to know how to solve for the concentration of a...

08 August 2017 6,640 3 View

How do I express a real valued function that is written using complex variables so that only real variables are used in the statement of the function?

Mathematica 11.0.1 has a habit of expressing real valued functions in terms of combinations of functions of a complex variable. This makes it difficult to see exactly how the function depends on...

04 April 2017 6,211 3 View

What is the probability for a random walker in 1d to return to its starting point for the first time?

A random walker starts at the origin, and experiences unbiased diffusion along a continuous line in 1d. What is the probability for this walker to return to the origin for the first time as a...

02 February 2017 1,634 7 View