DaveE's latest activity

A multi-photon absorption might happen I think under extreme conditions like a strong laser.

In the USA no matter how old the service is there is nothing stopping me from updating to a 'safe' installation by adding three wire...

Just a few thoughts as I was on the job market recently (within the past year). Listing skills first before employment history for an...

Yes. Also, people (like me) often are assuming linearity, which isn't always true.

Just to point out, though likely obvious to most, that we need to have an inner-product defined in order to define or talk about...

Agreed. Many of the "paradoxes" in relativity stem from unknowingly importing intuition from orthogonal coordinates into...

Yes, sometimes. We need to be a bit nimble to select basis and reference frames to make simple calculations as well as further...

I would say this a little differently: There are things (like crystal structure) that are natural to represent using a non-orthogonal...

There are lots of materials you might run across that naturally have non-orthogonal basis to describe anisotropic behavior like strength...

This appears quite often in engineering. We use eigenvalues and eigenvectors to model dynamic systems to make the analysis easier do and...

Or, a fair coin coming up heads 200 times in a row. Or, a pack of cards being randomly shuffled into a given configration. Even these...

You should try soft iron or mild steel for the pin, not stainless or high tensile steel. The more the pin material costs, the worse it...

Since it's a town house, you might try asking your neighbors if they have one too and what it does.

It's not uncommon for a receptacle to be split. For instance the bottom may be live all the time but the top is controlled by the switch.

How do you know it is unused? When you pull the plastic faceplate off, do you see any wires going to the switch? (Don't pull the...