Recent content by pmehnati

you want to fibricate solar cell?

HI every one what's the @ rule in the MATLAB code? especielly when we use quad command.

how we can clean and remove the fat effects such as fingerprint of polarizing beamsplitter cube.we must regarded that the surface of polarizing beamsplitter cube have some coating materials that they should be safe,

Hi, how we can determine the right or left circularly polarized light by using the optical devices such QWP or HWP or others.

Hi why is band gap indirect in semiconductors like Si ?and direct in semiconductors like GaAs?

Hi I think you shouid study some information about linear response theory & thermodynamics.

you can use vi power 2 -vi 0power 2=2ax and calculate accelerate then use again this formulla to find the distance of lighter mass.

Thanks for your answet .It was what I want (halo)

Hi At night when you watch moon in cloudy weather you will see the diffraction of moon light around it in circle form and so the colorful circles . Please explaine me the physics of it. Thancks.

Hi At night when you watch moon in cloudy weather you will see the diffraction of moon light around it in circle form and so the colorful circles . Please explaine me the physics of it. Thancks.

Hi I want some problems and solutions about thermodynamic.Can you help me?

my purpose is the application of atomic time in Rilativity.

Hi Iwant some inormation about atomic time.Can you help me?

I think daughter is look like her aunt(father's sister) & boy is look like his uncle(mather's brother).

hi. my question:why the harm of discharge of thunder in village is worse than cities?