Recent content by RayRoc

I know that this is an old topic but it has merit in analyzing a dynamic system. First consider the OP question, is the trucks velocity relevant? It sure is! If we have a wind angle of 90 degrees across the road, and 0 movement of the truck then the force exerted on the truck would be at...

I usually plate lead dioxide on carbon to form my anodes, however, I was wondering if anyone knew why one can't use a lead strip and let electrolysis oxidize the surface to lead dioxide? It is too simple for it not to be used already. But I did make a set of lead acid batteries by just using the...

I am curios about the production process of LEDs, particularly using the method of growing the crystal using CVD. I am not exactly sure where the best place is to start but here goes my first question. The refraction of SiC is as such that the light gets largely reflected back into the...

one more thing, corona discharge is destructive to the PE dielectric, it will destroy your capacitor if not built with plenty of extra bulk. although you don't have to worry much below 4000V, 12000V produces plenty of it.

Have made many of them, including practical 50,000V air core resonant capacitor charging power supply. as to your questions, flash over spacing: it depends on your primary voltage, air breaks down at 70,000V per inch (under controlled circumstances) but because homemade capacitors don’t...

I always really liked Vdraft. Although it does not seem to be updated any more, the features and ease of use make it a powerful program. It reads and writes DWG and DXF. Without saying much more about it I really like it for all of my 2D stuff (even more then autocad). It costs $100 (I think)...

Whoa! I missed that one! Bystander you have quite the point. The compressed air must saturate after expansion, and that could take allot of water away. On top of that it also indicated that the system is not closed, and can carry allot of heat out through evaporation alone without the aid of the...

I might add to the previous post that the prediction assumes specific things, and one of them is total power input. One significant source of heat is the pump, and can change the prediction. So one would need to include actual power consumed by the pump, multiplied by the electrical efficiency...

Did the temperature level out at 30C What is the environmental temperature? I will try my hand at the deduction. Assuming 10C for the environmental temperature. And assuming that the temperature did level out at 30C Power loss per deg C. = 24000/(30-10) = 1250W Power required =...

I am trying to predict elastic wheel deformation. I am not quite sure how to do it. How might one approach the problem? Take a steel wheel: 6 in. diameter, 2 in. thick, with a contact force of 1000lbs E = 30,000,000 psi Poisson ratio: .27 Would one calculate this in finite layers...

Borek thank you for your replies, you have answered my intended question, (I think) but for clairification, even though a simple experiment would suffice, I still wonder if I would have problems useing a lead electrode for electrolysis production of oxygen gas.

I thought I understood the mechanism that would produce the lead dioxide on the electrode, but I have read about electrode preparation involving the plating of the PbO2 on a substrate like titanium, carbon, and lead. This doesn’t make sense to me when it comes to lead, as I thought it would be a...

A while back I did an experiment, I placed two lead sheets in a H2SO4 solution, exposed it to a charging current and tested the battery there after. As I understand it, the battery worked by the metal combination of PbO2 and Pb, and through electrolysis I formed the PbO2 directly on the...