Recent content by Andy Resnick

Altered (fenitized?) trachyandesite, Fen complex. Mesocratic. Groundmass consists of vaguely trachytic K-feldspar within two different matrices; both are granular and identification is tricky. I think the darker matrix consists of interstitial green pyroxene and some carbonate, while...

(Message reply didn't add the quote, Im replying to post #4) Yes, a point detector would almost never detect the position of a particle. But sometimes it does. Like I said, it depends on what information you are expecting from a measurement. Surely, you would agree that an array of...

Ergh... I stayed up way to late to try and image the Falcon 9 lunar impact. TL;DR: didn't see anything happen. Firstly: (Nikon Z7 + 800/5.6 nikkor @ f/8, 1/160s, ISO 200) Here's where the plume would have been (300%), had I seen it: But I did get nice images of Rupes Recta (200%...

I got to spend a sunny afternoon practicing macro (55mm MicroNikkor) and tilt-shift photography (Vivitar 135/3.5), both are lenses I inherited, but this is the first time (for me) using a 135mm lens. Some macro shots, all @ f/11, 1/1600s, auto ISO, images cropped as I see fit: Hairy...

I guess it depends on what information you hope to obtain- a point detector does not cover all positions, but then your location measurement is simply 'yes' or 'no' (of course, since you set the position of the detector, you also know the position value). Similarly, a momentum measurement can...

Heavily altered tinguaite (fenitized trachyandesite), Fen Complex. Groundmass consists of trachytic K-feldspar laths (with a high concentration of inclusions), green pyroxene (heavily eroded), and carbonate (likely calcite). Forgot to add scale bars this week :( Trachytic texture is more...

Fenitized trachyandesite (Fenite?), Fen Complex. Very fine-grained (holocrystalline and aphyric) rock, principally consisting of K-feldspar. This sample is iron- and titanium-rich: red hematite, diffuse like smoke; and dark ilminite, purple due to specular reflection in epi-darkfield...

It's my usual arrangement: 55/3.5 MicroNikkor w/ M2 spacer on a Z7 body. I haven't shot film since grad school..... :)

Stuck inside today and bored = a brief photo essay. Images all handheld: 1/100 s, f/3.5, (auto) ISO up around 25 kajillion. Went looking for bugs in the basement with my Micro Nikkor and found: Because I have to get close, I startled the bug. It scrambled to secure its egg sac: I went...

This is not fog: (Canadian/Minnesotan wildfire smoke is visiting) Somehow this image makes the air look more clear than it is.

Best guess- strongly altered (fenitized?) trachyandesite (QAPF zone 8b), Fen Complex. The black smudge on the left side is an artifact and not part of the sample. I’ve lately considered that some of the samples (#267 thru 274) I identified as ‘skarnoids’ may in fact be fenitized tinguaites...

I guess I misunderstood what you meant in post #33 (boldface mine): "The goal is standardization and courses meeting requirements to other courses" Intro physics courses, nationally (in the US), are already "logical from one to the next and compatible from one institution to the other".

But that's already in place (at least in the state of Ohio). My question is: why you want *additional* uniformity on top of what is already in place?

I don't. Intro labs are not experiments and they don't need support from lectures. Students have never complained to me (either in person or via anonymous 'customer satisfaction surveys' that it's a problem. Funny you mention this, I have been seriously considering ways to start PHY I with...

The courses already meet requirements, so what's the real motivation for "standardization"? See my post #13.