Recent content by Oleg

Acceleration is a simple part. Something around ~3-5 degrees/sec^2 would be good enough. For the balance part, it is not so straightforward. What is a measure of "carefulness"? I will have the possibility to adjust the position of the load and I'll do my best, but we all understand that it never...

I see. Do you have an idea, how to estimate the required torque?

I'm willing to build a motorized gimbal head for my camera (something like this: https://www.amazon.com/dp/B01JN5D40A/?tag=pfamazon01-20). If my understanding is correct, given that camera will be well balanced on the platform, the motors would not need to hold the load and only should be...

And one more question about this: In my case the task has cylindrical symmetry and I want to shift from Cartesian to cylindrical coordinates. In Wikipedia I found the nabla formulas in cylindrical coordinates (https://en.wikipedia.org/wiki/Del_in_cylindrical_and_spherical_coordinates). Is...

Great! But how did you understand that?

Hi kuruman, it's me again... :) Please clarify, if magnetic field is less then 0.3 T the magnetic moment still point at the same direction (parallel to field) and only magnitude is changing? Thanks in advance!

Thank you. Now, I think, I understood.

Hi kuruman, thank you for your explanation. Now I understand where ∂Bx/dy term comes from. Talking about my particular case - I'll use disc magnet so I have some symmetry and Bz term turns to 0. But after this vector identity I scary that I'm don't know that "magnetic moment is going to be a...

Hello, I'm currently doing the project and need to estimate the force that will act on the micron size superparamagnetic particle in the field of permanent magnet. I found several article there similar problem is solved, but I a bit confused. I hope someone could hep me. So, the main equation...

Hi everyone. My name is Oleg. I'm PhD in organic chemistry, but currently working in cell biology. Have some interests in physics too ))