Recent content by Frank-95

Okay, let's suppose that I need I choose any of them, because the flow rate is what I need, 0.19 L/min for example, the one with 1/8'' thread size. This means that if I pushed with the motor a certain amount of water (like 100 μl) at 0.19 L/min, then the pressure at the spray will be 0.7 bar as...

Okay, so if I had to choose a spray nozzle what features should I look for? As far as I know spray nozzle are provided with operating pressure range, and minimum capacity, is that right? Let's consider this one as example. It says...

Yes we are talking about acqueous solutions. Okay, that was the first thing I did a lot of time ago: ω = ( Q ⋅ 360°) / ( π r^2 p ∂°) Where omega is the step rate [step/s], Q the flow rate [m3/s], r the syringe body diameter [m], p the pitch of the threaded rod [m/rev], ∂° the angle...

It is what I need it is not calculated. I edited the first post. I still have to choose the spray nozzle though, but it will likely be a nozzle that can operate at those values. Do you need the complete numerical application of Hagen-Pouseuille formula? Yes forgive my inaccurate thread title...

Hello. I've built this syringe pump. The chosen motor is a NEMA 11 with a maximum torque of 6 Ncm. The thread rod is an M5 with a pitch of 0.8 mm. The whole system will consist also of a long tube (1 m length, 3.175 mm external diameter, 1.5875 internal diameter), at the end of which I'll need...

Well, yes and no, as far as I understood. I got that for a generic signal talking about frequencies is just a math abstraction. As regards light, and EM radiation in general, frequencies are somehwat real. Take a prism or a grating that spread the white light to its colors. It's a continuum...

1) Thank you both, now it's make more sense to me! 2) So it's just a matter of uncertainty? If we had a gas laser which does not have a band of allowed levels, but only two dicrete levels, would that still hold? If the energy of emitted photons depends on the difference between the two energy...

Hi all! I would have two questions, related to laser and photodiodes spectra. 1) We know that lasers produce a very monochromatic radiation, even if they are low to moderatly expensive. That is because the emitted frequency light is dependend on Ec - Ev = Eg which is the bandgap. So electrons...

I'm going to try, although I was already ignored once. Thank you for the link :)

Sorry but I coulnd't understand the phisical situation. You have a laser a lens and a plane where the image will be formed, right? Where should the object be?

I'd need them related to sensors, and even better related to lenslets arrays. I understood what a CRA or a FOV is, even though I had to seize infos from several web sites, nevertheless it would be nice to have a nice article or book that explain microlenses arrays, that I can use as reference in...

Could you please suggest me any book/article/report/whatsoever that talks about image height-cra-fov relation in a photographic environment (when there is a sensor after the lens)? Because I should write a work and I would need "official" references. Moreover I would kindly ask @Greg123 if he...

Thank you for your contribution. Anyway I'd like to quote @pixel question. Also I knew that photosites (I'd rather use this term than pixels), are equally spaced (see page 25 of the datasheet in the first post). Why would they be different at the edges? p.s. I'm not native english. For pitch...

He said that it is possible, but did he give any reasons?

Hi all! I have an optical system made up like this: Circular led source -> smaller circular diaphragm -> circular even smaller lens -> cmos sensor at the posterior focal plane This is the in scale model: The image is optically after the focal plane, but practically it will lie on it due to...