DaveE's latest activity
-
DaveE replied to the thread When 50,000 volts go through a wire at 5,000,000 FPS - The Slow Mo Guy.Yes, that works for me. But the charges inside the wire (the waveguide part) are also involved. Ultimately it's a bit too complex to be... -
DaveE reacted to tech99's post in the thread When 50,000 volts go through a wire at 5,000,000 FPS - The Slow Mo Guy with
Like.
5 M frames per sec is not fast enough to capture the wave that travels down the wire starting from the switch, which takes just about a... -
DaveE replied to the thread Converting PSD into equivalent sound pressure for an underwater hydrophone.If you have a narrow resolution bandwidth you can use that to convert the spectral density into a voltage. You can assume the psd is... -
DaveE replied to the thread Other Which branch of engineering is more physics heavy?.Lasers. Quantum Computing. Semiconductors. -
DaveE reacted to russ_watters's post in the thread How do people explore new ideas in physics? with
Like.
It's not a "holier than thou attitude", it's a true reality. That's not what I said. I said "near zero". It's certainly possible (not... -
DaveE reacted to russ_watters's post in the thread How do people explore new ideas in physics? with
Like.
There's really no way around the fact that the barrier to entry (being educated in physics) is required for practical reasons. There's... -
DaveE reacted to .Scott's post in the thread I Could fast radio bursts be alien radar signals? with
Like.
There are a lot of reasons to doubt that FRBs are deliberately engineered and fabricated. But their application for radar is especially... -
DaveE replied to the thread I Free fall of person in a sled to direct horizontal motion by atmospheric resistance.These specifications like glide ratio, climb rate, etc. all assume you are operating the aircraft to maximize that particular... -
DaveE replied to the thread Working for defense company?.I used to. The security issues mentioned would depend entirely on what your role is at the company. They employ a whole bunch of people... -
DaveE replied to the thread Plumbing How to remove a seized toilet tank bolt?.A Dremel tool and an hour of patience. Yes, this is the last resort. I'll bet it's unnecessary. -
DaveE reacted to sophiecentaur's post in the thread Plumbing How to remove a seized toilet tank bolt? with
Like.
. . . . and give it 24 hours to penetrate. The photo doesn't show a lot of rust so there can't be a lot sticking the threads. I trick... -
DaveE reacted to Borg's post in the thread Plumbing How to remove a seized toilet tank bolt? with
Like.
Screw two nuts lightly together near the top. Put a wrench on the top one when you try to turn the butterfly fastener and it should bite... -
DaveE reacted to Baluncore's post in the thread Plumbing How to remove a seized toilet tank bolt? with
Like.
The reasoning is: A flat blade screwdriver is not the best for applying torque. You need a temporary head on the threaded fastener, to...