russ_watters's latest activity

I got my degrees in general physics and geophysics and it’s been a long time since then and I am having a hell of a time finding people...

Here's the way I would say it, following from our thread on suction: The definition of suction is the removal of air (in this case) from...

Because kinetic energy, KE = ½·m·v², less energy is needed to draw in a fixed mass of air from a hemispherical shell at velocity v, than...

I think it is as simple as the explanation found unsatisfactory in the first para of the initial post - Put the fan in a duct and the...

While that's can be true, for a desk fan the associated pressure change is very close to zero (vs atmospheric), so it's not a limiting...

It's not difficult to find technical papers online that analyze 2D laminar flow around a rectangular cylinder. Here's one example picked...

I would have said that a rigid body is a set of particles whose pairwise distances from each other are constant.

Note, this thread is more than 2 years old.

I'm very sorry to hear that. But you can still harm yourself or your neighbors or your coworkers with your ill-advised experiments...

So incandescent bulbs, and some overstress by your stress is the likely issue in their failure.

OK. We don't know. Neither do you. That's how it goes with experiments that aren't scrupulously controlled. The fact that they all...

The only energy an incandescent bulb can store is the thermal energy of the hot filament. This energy will dissipate quickly and isn't...

My first thought was surprise that an MD wouldn't be familiar with the peer review process. Don't most MDs sometimes publish...

I didn't think there were any elementary experiments that tested GR. As distinct from Newtonian gravity. Pound-Rebka or Hafele-Keating...

What you described is not what is shown in the video/edge effect, so no.